WO2024251477A1 - Appareil de séparation pour la séparation d'une suspension - Google Patents

Appareil de séparation pour la séparation d'une suspension Download PDF

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Publication number
WO2024251477A1
WO2024251477A1 PCT/EP2024/063267 EP2024063267W WO2024251477A1 WO 2024251477 A1 WO2024251477 A1 WO 2024251477A1 EP 2024063267 W EP2024063267 W EP 2024063267W WO 2024251477 A1 WO2024251477 A1 WO 2024251477A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
separator
drum
container
separation system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2024/063267
Other languages
German (de)
English (en)
Inventor
Andrej MICHEL
Kai HELMRICH
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Westfalia Separator Group GmbH
Original Assignee
GEA Westfalia Separator Group GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE202024102397.8U external-priority patent/DE202024102397U1/de
Application filed by GEA Westfalia Separator Group GmbH filed Critical GEA Westfalia Separator Group GmbH
Priority to CN202480037129.1A priority Critical patent/CN121263250A/zh
Priority to IL324927A priority patent/IL324927A/en
Publication of WO2024251477A1 publication Critical patent/WO2024251477A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
    • B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B15/00—Other accessories for centrifuges
    • B04B15/04—Other accessories for centrifuges for suppressing the formation of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B15/00—Other accessories for centrifuges
    • B04B15/08—Other accessories for centrifuges for ventilating or producing a vacuum in the centrifuge

Definitions

  • the invention relates to a separation plant for separating a suspension with a centrifugal separator, according to the preamble of claim 1.
  • Centrifugal separators particularly disc separators, within the meaning of this document are used to separate a flowable suspension as the starting product in the centrifugal field into phases of different densities.
  • the parts of the separators used that come into contact with the product must be sterile.
  • the main application of the present invention is in the field of centrifugal separators, in particular disc separators, with so-called exchangeable separator inserts, as are suitable for single-use applications.
  • centrifugal separators in particular disc separators, with so-called exchangeable separator inserts, as are suitable for single-use applications.
  • all elements that come into contact with the product should be disposed of after their single use in order to avoid cross-contamination.
  • a container e.g. a plastic bag or plastic container, which is in the process of the light and/or heavy phase, at a defined fill level so that it neither runs empty nor overflows.
  • a suitable measuring system and a drainage system must be selected so that it controls the flow of individual product phases, possibly with the help of a control system, in such a way that the liquid level in the container can be kept constant even if the flow into the container fluctuates.
  • EP 3 885 050 A discloses a device and a method for separating a suspension into several product streams.
  • the mass of a product stream derived from the separation device into a container is determined using a scale.
  • the density of the separated phase can fluctuate. For example, it can contain air bubbles or air inclusions and even form a foam phase. With variable density the calculation of the fill level in such a container also fluctuates. The suitability of a weighing system for fill level control is therefore limited.
  • a separation system with a container in which a liquid level can be kept at a defined value regardless of the medium, i.e. even with media with fluctuating density, so that the container is not overfilled, for example.
  • the fill level can optionally be determined.
  • a separation plant according to the invention serves to separate a suspension with a centrifugal separator as part of said separation plant.
  • the centrifugal separator has a frame and a housing.
  • centrifugal separator has a separator insert which is designed as a pre-assembled, exchangeable unit for arrangement in or on the frame.
  • the separator insert has a housing which is stationary during operation and a rotor which can be mounted in or on the housing and which can rotate about an axis of rotation and has a drum with a drum wall.
  • the suspension in question is separated in the centrifugal field into a light and a heavy phase and these are then discharged separately. It is also possible that one phase, in particular the heavy phase, remains in the drum and only the light phase is discharged.
  • the separator insert then preferably has a separating agent arranged in the drum.
  • a separating agent can be, for example, a stack of plates, which preferably has conical separating plates. This serves to increase the clarifying surface.
  • the separator insert has at least one product inlet line and at least one product outlet line.
  • the separator can also advantageously have several product inlet lines and several product outlet lines.
  • a solid phase can be discharged via a separate product outlet line as part of the separator insert. All product inlet lines from the drum are part of the inlet system and all product outlet lines from the drum are part of an outlet system.
  • the entire separator insert with its inlet and outlet system is advantageously designed in a sealed manner with respect to the frame or the housing. If the housing is part of the replaceable separator insert, it is preferably designed in a sealed manner with respect to the frame. If the housing is not part of the replaceable separator insert, it is designed so that the rotor can be inserted into the housing. The housing can then be closed and sealed from its surroundings.
  • the feed system can have several product feed lines and the discharge system can have several product discharge lines.
  • a separate product feed line can be used, for example, to add flocculants or the like to the suspension.
  • Other substances, e.g. agents for preserving the product during processing, such as ascorbic acid, possibly as a diluted solution, can also be fed in via a separate product feed line.
  • the product-contacting areas of the separator insert are partially or completely made of plastic.
  • the housing and/or one or more further containers are connected by means of a suitable
  • the device can be directly or indirectly pressurized with sterile air A or an inert gas and can be placed under an overpressure by this pressurization and/or the housing with the device can be placed under a negative pressure.
  • positive pressure and negative pressure refer to the environment of the housing.
  • the housing can be designed as a part of the replaceable separator insert made partially or completely of plastic.
  • the housing can be designed as part of the frame and not as part of the separator insert. It is then advantageous if the housing can be opened in order to be able to insert and remove the pre-assembled separator insert.
  • the device comprises a pressurised tank, downstream of which is a controllable valve and/or a controllable throttle or the like, and/or a pump.
  • the housing is in pressure and fluid connection with the other container(s), e.g. containers for the light phase and drainage, such an arrangement also reduces or prevents outgassing in these containers
  • the sterile chamber is ventilated or that the inert gas is forced through a sterile filter (not shown) into the drainage container or containers in the light or heavy phase outlet in order to put them under pressure.
  • a control unit is provided which is designed to control and/or regulate the supply of sterile air or an inert gas.
  • control unit it has also proven useful to use the control unit to set the flow rate of the compressed air or inert gas supply to a value between 0.1 and 10 l/min and the overlay pressure to a value between 10 mbar and 300 mbar.
  • the sterile air or inert gas supply can be continuous or pulsed.
  • a foam-reducing agent can be injected at least into the housing and/or the at least one further container.
  • the separation system has at least one container which is connected to the at least one product discharge line.
  • This container preferably has an inlet and outlet opening which are spatially separated from one another.
  • the separation system can then have a fill level measuring device for determining a liquid level of the suspension within the container and/or at least one or more limit switches for detecting a liquid level reached within the container.
  • the separation system can also have a control system which receives and evaluates the fill level measuring signals and generates the necessary signals for controlling one or more drain pumps and/or any valves required.
  • the fill level measuring device and/or the limit switch are arranged non-invasively on the outside of the container so that no direct contact is made with the product. This can prevent surface reactions on the measuring surfaces or the contact surfaces of the sensor element and the like.
  • Non-invasive sensors can also be reused in single-use systems, since in this case only components that come into contact with the product are usually used once. Examples of possible principles for such non-invasive measurements are: capacitive measurement, optical measurement, measurement of the damping of vibration, pressure measurement, measurement of deformation or time-of-flight measurement of ultrasonic or radar signals.
  • the container may have a drain, e.g. a drain nozzle, for the continuous drainage of a liquid.
  • a drain e.g. a drain nozzle
  • the fill level measuring device and/or the limit switch has a sensor element for transmitting and/or receiving an electromagnetic signal, preferably an ultrasonic signal, a microwave signal and/or a light signal.
  • an electromagnetic signal preferably an ultrasonic signal, a microwave signal and/or a light signal.
  • the centrifugal separator can also have a discharge line for the heavy phase and a discharge line for a light phase, preferably each as part of the aforementioned discharge system, wherein a pump is arranged in at least one of the discharge lines.
  • the separation system can advantageously have a device for adjusting the filling level in the container.
  • the pump can be part of this device. The same applies to the filling level measuring device and/or the at least one limit switch.
  • the pump is designed to be adjustable based on the measuring signals from the filling level measuring device and/or the limit switch. This includes, among other things, a signal connection between the elements, optionally via cable or via wireless transmission to the evaluation unit and/or to the control system.
  • the filling level measuring device can be designed to continuously determine the filling level. This can be detected in particular by signal reflection and/or a sudden signal change at a phase boundary.
  • the fill level measuring device and/or the at least one limit switch is particularly preferably arranged on the container in an exchangeable manner. This means that the measuring device can be reused even when the areas in contact with the product are disposed of and is therefore not a single-use component of the separation system according to the invention.
  • the filling level measuring device can in particular be arranged on the container, preferably on its bottom, in such a way that a signal perpendicular to the liquid level If this is reflected at the liquid level, only one sensor element that can be switched between transmitting and receiving mode is necessary, which simplifies the device design.
  • the separation system for regulating the fill level in a defined filling area in the container can have at least two limit switches for detecting a lower and an upper fill level. These can, for example, be directed from the side of the container from the outside or be in contact with the container. When the upper fill level is exceeded, this is detected by the control system and a corresponding signal is sent, for example, to the drain pump. This is then switched on until the lower fill level is again undershot. In this way, the fill level can be kept between the lower and upper fill levels.
  • control system can, for example, also determine the speed at which the bag fills or empties.
  • the device for adjusting the discharge volume can optionally have a pressure sensor for determining the pressure of the liquid in the container, which is preferably arranged at the bottom of the container and/or at an outlet of the container.
  • the pressure sensor also enables the filling level to be determined, since there is a correlation between the height of the liquid column in the container and the pressure generated thereby.
  • the fill level measuring device and/or the limit switch(es) can advantageously have an ultrasonic sensor element and an evaluation unit which is set up to monitor the suspension composition by comparing a determined sound speed with a medium-specific target value of a sound speed. It is known that the signal speed correlates with the composition in the medium. In the case of a known measuring medium with a fluctuating composition of the individual components or in the case of foam formation or air inclusions, a determination can be made by comparing and, if necessary, interpolating several ultrasonic values for different compositions. While a clear signal change thus indicates a phase boundary, the precise evaluation of the signal speed enables at least monitoring of whether the respective derived light and/or heavy phase has a constant composition or not.
  • the aforementioned evaluation unit is set up to continuously determine a filling level using the runtime method.
  • the evaluation unit can have a data memory on which a corresponding computer program product is stored.
  • a capacitive change can also be detected by the measuring arrangement.
  • the sensor for measuring the capacitive change is mounted from the outside at a distance of a few millimeters from the container or brought into contact with the container. If the container contents cover the measuring point, the value of the capacitive coupling changes, which is determined by an evaluation unit and, if necessary, passed on to a control system as a measuring signal. Analogous to the design variant already described above, several capacitive sensors can be used to keep the fill level in the container within a defined level.
  • the invention also provides a method for centrifugally separating a suspension into at least two flowable phases with a provided separation system which is designed according to one of the claims related thereto, with at least the following steps: a) feeding a provided suspension into the rotating drum, b) carrying out the centrifugal separation of the suspension in the rotating drum of the separator insert, and c) discharging the at least two flowable phases from the drum, d) wherein an overpressure or a negative pressure is generated in the container during the centrifugal separation.
  • the invention is described in more detail below using exemplary embodiments with reference to the drawing, in which further advantageous variants and embodiments are also discussed. It should be emphasized that the exemplary embodiments discussed below are not intended to describe the invention in full, but that variants and equivalents not shown can also be implemented and fall under the claims. It shows:
  • Fig. 1 is a schematic, sectional view of a first replaceable separator insert of a separator together with a schematic view of an inlet and outlet system and a control device of the separator;
  • Fig. 2 is a schematic, sectional view of a second replaceable separator insert of a separator together with a schematic view of an inlet and outlet system and a control device of the separator;
  • Fig. 3 is a schematic representation of a centrifuge separator with a reusable frame and a replaceable separator insert, the latter here in the manner of Fig. 1, with hose sections arranged thereon;
  • Fig. 4 is a perspective view of the replaceable separator insert from Figs. 1 and 3 with hose sections arranged thereon;
  • Fig. 5 - 7 three successive steps when inserting the exchangeable separator insert from Fig. 4 into the frame of Fig. 3;
  • Fig. 8 is a perspective view of a modification of the separator and the separator insert of Figs. 1-7 as a further embodiment
  • FIG. 9 schematic representation of a separation plant according to the invention for carrying out a preferred separation process
  • Fig. 10 is a perspective view of a separator insert in a modification of the variants of Fig. 1 -8 with an integrated drainage drain line;
  • Fig. 11 shows a further embodiment with a rotor as separator insert and a housing as a fixed, non-replaceable component of the separator
  • Fig. 12 shows a further embodiment of a separator insert, which has at least one connection piece on its housing for supplying or discharging gas.
  • FIG. 1-12 show several centrifugal separators 100 with a reusable frame I and with an exchangeable separator insert II for centrifugal separation.
  • the separation process can be implemented in particular by the embodiments of Figs. 10-12, in which a drainage discharge line 120 is provided.
  • a separation system 200 according to the invention is shown in Fig. 9.
  • the separator insert could also be designed in the manner of Fig. 1 or Fig. 2 and, if necessary, be supplemented by a drainage drain line (not shown).
  • the separator insert II is preferably designed as a prefabricated unit.
  • the separator insert II is designed as a disposable separator insert that is exchangeable or replaceable as a whole and designed as a pre-assembled unit, which is made entirely or predominantly from plastic or plastic composite materials.
  • the separator insert (which does not include elements 4a and 5a) is shown separately as an example in Figures 1 and 2. It can be disposed of after processing a product batch and replaced with a new separator insert II.
  • the separator insert II of the separator has a housing 1 and the rotor 2 inserted into the housing 1, which can rotate relative to the housing 1 during operation.
  • the rotor 2 has an axis of rotation D. This can be aligned vertically, which corresponds to the structure of the frame I. However, it can also be aligned differently in space if the frame is designed accordingly.
  • the rotor 2 of the separator insert II has a rotatable drum 3.
  • the rotor 2 is rotatably mounted at two locations axially spaced from one another in the direction of the axis of rotation with respective magnetic bearing devices 4, 5.
  • the rotor 2 or thus also the drum 3 is rotatably mounted at the two axial ends.
  • the separator insert II has rotor units 4b, 5b of the magnetic bearing devices 4, 5.
  • stator units 4a, 5a of the magnetic bearing devices 4, 5 are arranged on the frame 1-1.
  • the magnetic bearing devices 4, 5 preferably act radially and axially and hold the rotatably mounted rotor 2 in suspension, preferably in the housing 1 at a distance from the latter.
  • Such a separator with an easily replaceable separator insert can be useful and advantageous when processing products where it can be ruled out with a very high degree of certainty that impurities will be introduced into the product - a flowable suspension or its phases - during centrifugal processing or where cleaning and disinfection of the separator would be very complex or even impossible.
  • the frame I has a console 1-1. This can - but does not have to - be mounted on a carriage I-2 with rollers I-3. Receptacles I-4 and I-5 can be formed on the console 1-1, which serve to receive and hold the separator insert II even during operation. Preferably, a first axial end of the separator insert II projects from below into or towards the upper receptacle I-4 and a lower end of the separator insert II projects from above into or towards the other receptacle I-5, and the separator insert II is held on the console 1-1 and thus on the frame I in a rotationally fixed manner.
  • mounts I-4 and/or I-5 can be arranged on the side of the frame I, in particular the console 1-1. According to a variant, it can be further provided that, for example, the lower mount I-5 is fixed to the console 1-1. It is then advantageous that the further upper mount I-4 is height-adjustable on the console 1-1.
  • the console 1-1 has such a vertical extension/length that the separator insert is held stationary in a first position of the height-adjustable holder I-4 by both height-adjustable holders I-4, I-5 and is interchangeable in the other upper position.
  • the holders I-4 and I-5 with the stator units 4a, 5a on the frame I can be moved axially apart and towards each other again in order to change the separator insert II, ie to be able to remove the old separator insert II from the frame I and replace it with a new one.
  • This can be achieved, for example, with a rail on the console and a Movable slide that can be locked in a sliding position on the height-adjustable holder (not shown in detail).
  • the relative distance between the receptacles I-4 and I-5 with the stator units 4a, 4b of the bearing devices 4, 5 is adjustable in order to be able to change the separator insert II.
  • Respective stator units 4a, 5a of two drive and magnetic bearing devices 4 and 5 can be arranged in the respective receptacles I-4 and I-5.
  • the control and power electronics for this can be arranged in or on the frame I, e.g. in, on or on the console 1-1.
  • Corresponding form-locking means can be formed on the receptacles I-4 and I-5 and on a housing 1 of the separator insert II that does not rotate during operation in order to be able to insert the separator insert II into the stator units 4a, 5a in a rotationally fixed manner.
  • the upper and lower stator units 4a, 5a can each have axes that are aligned with one another.
  • the housing 1 and the receptacles I-4 or I-5 with the stator units 4a, 5a can have projections (e.g. pins or webs) and recesses (e.g. holes) as the corresponding form-locking means in order to hold the housing 1 in a rotationally fixed manner on the stator units and thus on the frame II.
  • the corresponding form-locking means can also be formed directly on the frame II.
  • the position of these corresponding form-locking means also defines the functionally required position of the stator units 4a, 5a and the rotor units 4b, 5b relative to one another. This particularly applies to the precise centering of the coaxially nested units 4a, 5a and 4b, 5b.
  • the mounts can also exert a holding force (from above and below) on the housing in the axial direction in order to hold it in a force-locking manner if necessary.
  • the receptacles I-4 and I-5 with the stator units 4a, 5a of the frame I each have several pins 41 a projecting in the axial direction, and the respective Separator insert II can have corresponding blind holes on the housing 1, for example extending in the axial direction, as recesses 42 and 41 b.
  • the holder I-4 with the stator unit 4a has pins 41 that project axially or vertically downwards (not visible here) and the separator insert II has blind hole-like recesses 42 that correspond vertically at the top (visible here) and the lower holder I-5 with the lower stator unit 5a has pins 41 a that project axially or vertically upwards (visible here) and the separator insert II has blind hole-like recesses that correspond axially at the bottom (not visible here).
  • four pins 41 a and recesses 41 b are arranged distributed on the corners of an imaginary polygon, in particular a square, at the top and bottom of the holders I-4, I-5 and the housing 1 of the separator insert II.
  • corresponding form-locking means 41 a, 41 b and 42 are arranged circumferentially distributed around the separator insert II.
  • the corresponding form-locking means can also be arranged asymmetrically to ensure that the separator insert can only be used in a single orientation.
  • the stator units 4a, 5a can each have openings, in particular through-openings 43, in order to accommodate lines such as hoses 44, 45 connected to the separator insert II at the top and/or bottom.
  • One or both mounts I-4 and I-5 is/are designed to be vertically adjustable.
  • One of the two mounts I-4 or I-5 can therefore also be fixed to the frame I.
  • one of the two mounts I-4 or I-5 - e.g. the lower one - is designed on a wall of the frame I and is not adjustable. It is then sufficient to design the frame I in such a way that the other mounts I-4 or I-5 are adjustable, in particular arranged and/or designed to be vertically height-adjustable on the frame I.
  • Fig. 5 shows the frame I before inserting a separator insert II.
  • the two stator units 4a, 5a have been moved far enough apart relative to one another that the respective separator insert can be lifted axially between the two receptacles with the stator units 4a, 5a (Fig. 5, 6), with the separator insert II then being placed in/on the lower receptacle I-5 (Fig. 6 and 7) so that the corresponding form-fitting means - here 41, 42 - engage with one another.
  • the hose 45 at the lower end of the housing 1 has been guided downwards through the through-opening 43 of the lower - and thus axially associated - stator unit 5a (Fig. 6).
  • the upper receptacle I-4 is lowered until the corresponding form-fitting means of the upper receptacle I-4 and the housing 1 of the separator insert I - here 41, 42 - also engage securely with one another (Fig. 7).
  • upper hoses 44 on the housing 1 are guided through the through-opening 43 of the upper holder I-4.
  • the separator insert II is now securely held on the frame I in a rotationally fixed manner. The spinning and separating process for processing a product batch in the centrifugal field can therefore begin.
  • the upper separator unit is lifted upwards again until the separator unit can be lifted out of the frame I and replaced with a new one.
  • the rotor units 4b, 5b can be designed essentially in the manner of inner rings made of magnets, in particular permanent magnets, and the reusable stator units 4a, 5a can be designed essentially in the manner of outer rings, which are used for the axial and radial bearing of the rotor 2 (e.g. above) or alternatively also for the rotary drive (e.g. below).
  • the rotor units 4b and/or 5b as part of the separator drive also represent a part of the rotating system or rotor.
  • the rotor of the drive is a part of the drum of the centrifugal separator.
  • One or both of the magnetic bearing devices 4, 5 is/are thus preferably also used as a drive device for rotating the rotor 2 with the drum 3 in the housing 1.
  • the respective magnetic bearing device forms a combined magnetic bearing and drive device.
  • the magnetic bearing devices 4, 5 can be designed as axial and/or radial bearings, which support the drum 3 at its ends during operation in a cooperative manner axially and radially and keep it suspended and rotating during operation.
  • the magnetic bearing devices 4 and 5 can be designed in the same or largely the same way in terms of their basic structure. In particular, only one of the two magnetic bearing devices 4, 5 can also be used as a drive device. Corresponding components of the magnetic bearings 4, 5 are thus formed on the separator insert II - on its rotor 2 - and other corresponding parts on the frame I. One or both stator units 4a, 5a can also be electrically connected to control and power electronics for controlling the electromagnetic components of the magnetic bearing devices.
  • the respective magnetic bearing device 4, 5 can, for example, operate according to a combined electro- and permanent-magnetic operating principle.
  • At least the lower axially acting magnetic bearing device 5 serves to keep the rotor 2 suspended axially within the housing 1 by levitation. It can have one or more first permanent magnets, for example on the underside of the rotor, and furthermore have electromagnets on a holder on the frame, which coaxially surround the permanent magnet(s).
  • the rotor can be driven electromagnetically. However, a drive via rotating permanent magnets is also possible.
  • Such bearing and drive devices are used, for example, by the company Levitronix for driving centrifugal pumps (EP2 273 124 B1). They can also be used in the context of this document.
  • a first Levitronix motor "bottom” can be used as the drive, which simultaneously magnetically supports the drum radially and axially.
  • a second Levitronix motor - for example, identical in construction except for the control during operation - can be provided, which can support the rotor 2 radially and axially on the head as the magnetic bearing 4.
  • the rotor speed can be variably adjusted using a control device 37 (see Fig. 1 or 2) or a separate control device for the magnetic bearings 4, 5.
  • the direction of rotation of the rotor 2 can also be specified and changed in this way.
  • the rotor 2 rotates. It is thus held in axial suspension and centered radially.
  • the rotor 2 is preferably operated with the drum 3 at a speed of between 1,000, preferably 5,000 to 10,000, and possibly up to 20,000 revolutions per minute.
  • the centrifugal forces generated by the rotation lead to the separation of a suspension to be processed into various flowable phases LP, HP of different densities, as described above, and to their discharge, as described in more detail below.
  • the product batch is processed in continuous operation, which means that the phases separated from the suspension are completely discharged from the drum during operation.
  • the housing 1 preferably consists of a plastic or a plastic composite material.
  • the housing 1 can be cylindrical and have a cylindrical outer casing, at the ends of which two radially extending boundary walls 6, 7 (cover and base) are formed.
  • the drum 3 serves for the centrifugal separation of a flowable suspension S in the centrifugal field into at least two phases LP, HP of different densities, which can be, for example, a lighter liquid phase and a heavy solid phase or a heavy liquid phase.
  • the rotor 2 and its drum 3 have a vertical axis of rotation D.
  • the housing 1 and the rotor 2 could also be aligned differently in space. The following description refers to the vertical alignment shown (Fig. 3). If the orientation in space is different, the alignments change according to the new alignment. In addition, one or both outlets may be arranged differently - to be discussed later.
  • the rotor 2 of the separator with the drum 3 preferably consists entirely or predominantly of a plastic or a plastic composite material.
  • the drum 3 is preferably cylindrical and/or conical in sections. The same applies to the other elements in the rotor 2 and on the housing 1 (except for elements of the magnetic bearing devices 4, 5).
  • the housing 1 is designed in the manner of a container, which is advantageously hermetically sealed except for a few openings/opening areas (to be discussed later).
  • one of the openings is formed in each of the two axial boundary walls 6, 7, which are located here, for example, at the top and bottom, of the container 1.
  • One of the openings - in the first, here upper axial boundary wall 6 - enables or serves as an inlet 8 for feeding a suspension to be separated in the centrifugal field into at least two phases of different density - LP and HP - through the housing 1 into the drum 3, according to Figs. 1 and 2.
  • first phase is a lighter phase LP and the second phase is a denser, heavier phase HP compared to the first phase.
  • a second of the openings - in the second, here lower axial boundary wall 7 - enables or serves as an outlet for the second heavier phase HP directly from the drum 3 through the housing 1.
  • the drum 3 also has openings which are associated with the openings of the housing.
  • An inlet pipe 12 for a suspension to be processed extends into an upper opening 12a at one axial end of the drum 3. This passes through the housing 1, in particular its one - here upper - axial boundary wall 6.
  • the inlet pipe 12 is inserted into the housing 1 in a sealed manner according to Fig. 1 - e.g. by welding or gluing - or optionally designed as a one-piece plastic injection-molded part with the housing. It is preferably also made of plastic.
  • the inlet pipe 12 protrudes with one end from the top of the housing 1 and extends through the upper boundary wall 6 into the drum 3, whereby it does not touch the drum 3.
  • Fig. 1 but also Fig.
  • the inlet pipe 12 passes through the housing 1 and the one magnetic bearing 4 concentrically to the axis of rotation of the rotor 2, then extends axially further within the housing 1 into the rotatable drum 3 and ends there with its other end - a free outlet end.
  • the inlet pipe 12 opens into the drum 3 in a distributor 13 that can rotate with the drum 3.
  • the distributor 13 has a tubular distributor shaft 14 and a distributor base 15.
  • One or more distributor channels 16 are formed in the distributor base 15.
  • a separating plate stack made up of conical separating plates 17 can be placed on the distributor 13.
  • the distributor 13 and the separating plates 17 are preferably also made of plastic.
  • a first peeling disc 33 serves to drain the heavier phase HP of the two phases HP and LP from the drum 3.
  • a peeling disc shaft or a central drain pipe 34 penetrates the second axial boundary wall 7 (see Fig. 1 and Fig. 2).
  • the drum 3 has at least two cylindrical sections 18, 19 of different diameters.
  • One or more conical transition areas can be formed adjacent to these on the drum 3.
  • the drum 3 can also be designed as a single or double cone in its central axial area (not shown here).
  • the drum 3 can have a lower cylindrical section 20 of smaller diameter, on/in which the rotor unit 5b of the lower magnetic bearing is also formed, which merges into a conical region 20a, then here, for example, a cylindrical region 19 of larger diameter, then again a conical region 18a and then an upper cylindrical section 18 of smaller diameter, on which the rotor unit 4b of the upper magnetic bearing 4 is formed.
  • the separator inserts of Fig. 1 and 2 differ.
  • Openings (which can be provided on the drum 3 distributed around the circumference, whereby several openings can thus be provided on the drum 3) serve according to Fig. 1 as radial or tangential outlets 21 of the light phase LP from the drum 3.
  • An opening in the outer casing of the housing then enables the outlet or serves as an outflow 10 of the lighter product phase LP formed during the centrifugal separation, which has been discharged from the drum 3, according to the embodiment of Fig. 1.
  • the first outlets 21 on the radius ro of the drum 3 are designed in particular as "nozzle-like" openings in the outer casing of the drum 3. They are also designed as so-called “free” outlets from the drum 3.
  • the first outlets 21 serve to drain the lighter phase LP.
  • the outlets can be designed so that the light phase exits radially or, alternatively, can be designed so that the light phase exits tangentially against the direction of rotation of the drum and thus contributes to driving the rotor and reducing the drive energy.
  • This phase exiting the drum 3 is collected in the housing 1 in an upper collecting ring chamber 23 of the housing 1.
  • This collecting ring chamber 23 is designed such that the phase collected in it is directed to the outlet 10 of the collecting ring chamber 23.
  • the outlet 10 located at the lowest point of the collecting ring chamber 23.
  • the collecting ring chamber 23 is open radially inwards towards the rotating drum 3 and is designed at a distance such that liquid spraying out of the respective outlet 21 is sprayed during the centrifugal separation essentially only into the associated collecting ring chamber 23 - located at the same axial level.
  • a chamber 25 that is not used to drain a phase can optionally be formed below the collecting ring chamber 23, a chamber 25 that is not used to drain a phase can optionally be formed.
  • This chamber 25 can optionally have a leakage drain (not shown here). The leakage can drain freely. However, it can also be sucked out by negative pressure if the chamber 25 has a negative pressure connection for connecting a device that generates negative pressure.
  • the first collecting ring chamber 23 and the chamber 25 can be separated from each other by a first, here conical wall 26, which extends conically inwards and upwards from the outer shell of the housing 1 and ends radially in front of the drum 3 at a distance from the latter.
  • the product phase LP is drained from the housing 1 through the outlet 10.
  • Nozzles can be installed in the area
  • the drain 10 must be provided on the outside of the housing 1 in order to easily connect cables, hoses, etc.
  • the nozzles are preferably also made of plastic.
  • the housing 1 can be composed of several plastic parts which are sealed together, for example by adhesive or welding.
  • the first peeling disk 33 is provided as the (here second) outlet for the heavier phase HP from the drum (through the housing 1), which extends essentially radially and merges into an axially running drain pipe 34 as a peeling disk shaft that penetrates the lower axial boundary wall 7 of the housing 1.
  • the peeling disk 33 has an outer diameter ru.
  • the inlet openings 33a of the peeling disk 33 are therefore located on a larger diameter or radius ru than the outlets 21 for the light phase LP on the radius ro. This makes it possible to use the peeling disk 33 to drain a heavier phase HP relative to the lighter phase LP from the drum 3.
  • the peeling disk 33 stands still when the separator is in operation and its outer edge is immersed in the heavier phase HP rotating in the drum 3.
  • the HP phase is drained inwards through the channels in the paring disc 33.
  • the paring disc 33 thus serves to drain the HP phase in the manner of a centripetal pump.
  • the peeling disc 33 can be arranged in a simple and compact manner in the drum 3 below the distributor 14 and below the plate pack 17.
  • the radius ru corresponds to the immersion depth of the peeling disc 33.
  • the discharge pipe 34 is led out of the housing 1 with one end downwards out of the drum and through the lower boundary wall 7, but does not touch the drum 3.
  • the discharge pipe 34 can be formed as one piece with the housing 1 or inserted into it in a sealed manner.
  • a hose or the like can be connected to the discharge pipe as a discharge line 35.
  • the discharge pipe passes through the housing 1 and the lower magnetic bearing 5 concentrically to the axis of rotation D of the rotor 2, then extends axially within the housing 1 into the paring disk 33.
  • a controllable, in particular electrically controllable, control valve 36 is inserted into the outlet for the heavy phase HP, in particular into the discharge line 35 for the heavier phase HP.
  • the control valve 36 can be used to throttle the volume flow of the heavy phase HP in the discharge line 35 and to increase the immersion depth of the associated peeling disk.
  • a control device 37 is preferably provided.
  • the control valve 36 is preferably connected to the control device 37 wirelessly or by wire.
  • the control device 37 can also be designed and provided for controlling the magnetic bearings 4, 5 and the drive.
  • the light phase LP is also discharged via a peeling disk.
  • a peeling disc 22 is provided in the upper region of the drum 3, the inlet openings 22a of which can in turn be located on a smaller radius ro than the radius ru of the inlet of the first - lower - peeling disc 33 for the heavier phase.
  • the shaft of this peeling disc 22 can surround the inlet pipe 8 in the manner of a ring channel like an external drain pipe 24 and can be tightly connected to the housing 1 instead of the inlet pipe 8 or can be formed as one piece with it.
  • the drain pipes 24, 34 of the two peeling discs 22, 33 are thus led out of the drum 3 at opposite ends of the drum according to Fig. 2. They are also led out of the housing 1 at opposite ends. They can be inserted into the housing 1 in a sealed manner. However, they can also be made as one piece with the housing from plastic.
  • the inlet pipe 12 can be connected to the upper end of the peeling disc shaft 24. A radial or tangential connection piece 24a can lead out of the peeling disc shaft 24.
  • a drain line 40 for draining the light phase can be connected to this, which can open into a product collection container, e.g. into a bag or tank or the like. Accordingly, the ends of the pipes 12 and 34 can also be designed as nozzles for connecting hoses or the like (Fig. 2, but also Fig. 1 ).
  • controllable, in particular electrically controllable, control valve 39 is also inserted into the discharge line 40 for the light phase LP.
  • the control valve 39 can be used to change the volume flow of the light phase LP, in particular to throttle it more or less, and thus to adjust the immersion depth of the second peeling disc 22.
  • the control valve 39 is also connected to the control device 37 wirelessly or by wire, so that it can be controlled by the control device 37.
  • the respective paring disc 22, 33 is a cylindrical and essentially radially aligned disc with several channels, for example one to six, which is stationary during operation and has channels so that a type of centripetal pump is formed.
  • the respective paring disc 22 or 33 dips with its outer edge into the phase LP or HP rotating in the separator.
  • the respective phase LP, HP is diverted inwards through the channels in the paring disc and the rotation speed of the respective phase LP, HP is converted into pressure.
  • the respective paring disc 22, 33 thus replaces a drain pump for the respective phase LP, HP.
  • the paring discs thus each work as a centripetal pump. They can be made of plastic.
  • a third peeling disc could also be provided, which could be used to remove another phase.
  • the respective separator is prepared with its reusable components.
  • This includes the frame I and the drive and stator units 4a, 5a of the magnetic bearing devices.
  • This also includes a control unit 37.
  • a separator insert II is then prepared and mounted on the frame I. To do this, the stator units 4a and 5a only have to be moved apart.
  • the separator insert is then inserted in a form-fitting manner and the stator units are moved towards one another. This ensures that the housing is securely held in place against rotation.
  • hoses are connected to the nozzles that lead into containers or bags.
  • the respective separator insert in Figs. 1 and 2 can therefore preferably also have at least hoses and nozzles that can be connected to other lines (not shown here) and containers such as bags, tanks, pumps and the like.
  • the lighter phase LP flows radially inwards in the drum 3 in the separation chamber and rises upwards through a channel 38 on a shaft of the distributor. There, the phase LP leaves the drum according to Fig. 1 and 2 at a radius ro.
  • the separation process can be influenced in a simple manner using the control valve(s) 36, 39. This results in an optimization of the separation process.
  • the main application of the separator operation method is cell separation in the pharmaceutical industry.
  • the performance range is intended for processing broths from fermenters in the range of 100 l - 4000 l as well as for laboratory applications.
  • separators are used are also conceivable: chemicals, pharmaceuticals, dairy technology, renewable raw materials, oil and gas, beverage technology, mineral oil, etc.
  • the separators shown enable the production of a separator insert in which all components that come into contact with the product can preferably be made of plastic or other non-magnetic materials that can be disposed of after a single use or recycled. Cleaning after use is therefore not necessary.
  • the separator and its operation can therefore be implemented cost-effectively.
  • Fig. 8 shows a modification of the separator insert II of Figs. 1-7 in a second embodiment, wherein identical features are provided with analogous reference numerals.
  • the special feature of this second embodiment is that the form-locking means 41 a and the corresponding form-locking means 41 b provided on the frame I are only provided on one side between the frame I and the separator insert II, thus also enabling axial and rotational locking of the separator insert II relative to the frame I. This reduces the complexity of the structure, among other things.
  • the use of the modular centrifugal separator with replaceable separating insert shown in Fig. 1 -8 ensures a sterile interior, ie a sterile flow path within the centrifugal separator.
  • separators with a product inlet and outlet system consisting of a separator insert, inlet system and outlet system
  • other interchangeable components can also be used to provide a sterile flow path for the inlet suspension and the separated light and heavy phases.
  • the optional drainage system as part of the product outlet system is also designed accordingly.
  • the pump for the feed suspension, the hose line for the feed, the hose lines for the light phase and the heavy phase and the receiving container for the heavy phase can be replaceable sterile components that are suitably used to separate a single product batch or a limited number of product batches.
  • the hose line for the drainage liquid as well as the container for the drainage liquid can also be replaceable sterile components. All of these components are connected to one another with sterile connectors to enable easy and at the same time sterile changing of the components.
  • the product feed system, the product discharge system and the drainage discharge system of the separator are explained in more detail below using Fig. 9:
  • a single-use pump 101 can be used in the inlet, preferably in the form of a centrifugal pump. This has the advantage that it is smaller than comparable hose pumps with the same throughput.
  • the pump pumps a certain volume depending on its speed and the existing back pressure.
  • the flow meter 102 which is also arranged in the feed line between pump 101 and separator insert II, preferably works with a contactless measuring principle, e.g. ultrasonic transit time difference method. It can therefore simply be pushed over the feed line without coming into contact with the product.
  • a contactless measuring principle e.g. ultrasonic transit time difference method. It can therefore simply be pushed over the feed line without coming into contact with the product.
  • the measuring signal from the flow meter is used to regulate the speed of the inlet pump.
  • a controller can Adjust the speed of the feed pump so that the preselected setpoint for the feed volume matches the measured actual value.
  • the pump and flow meter are arranged in the rising feed line so that the line is always filled with liquid, which results in a more stable measured value of the flow meter 102.
  • a pump 110 and a flow meter 111 are arranged in the discharge line for the heavy phase.
  • the pump and flow meter are arranged in the rising discharge line so that the line is always filled with liquid, which results in a more stable measurement value of the flow meter 111.
  • a flow meter 115 can also be arranged in the light phase, e.g. downstream of the pump 107.
  • the drain pump 110 is preferably designed as a hose pump.
  • One of the advantages of a hose pump is that it only comes into contact with the outside of the drain hose and is not in direct contact with the product.
  • the drain hose is a single-use product.
  • Another advantage of the hose pump is that it delivers a defined volume depending on the speed. Unlike the centrifugal pump, it can be used as a throttle, i.e. it can generate a pressure in the discharge of the heavy phase, the level of which can be regulated by the control system. Accordingly, the necessary pressure sensors can be provided in individual or preferably all hose lines (not shown in the picture).
  • a container 105 is provided in the discharge line of the light phase, which serves as a buffer container.
  • the filling level of the light phase currently in the buffer container is determined by means of a filling level measuring device 104 and passed on to the control system.
  • the filling level can also simply be monitored by a limit switch, although in this case the possibilities for pump control are reduced.
  • the introduction of the light phase from the separator insert II into the container 105 can take place in the upper part of the container 105 (above the liquid level that is being established) or in the lower part of the container (below the liquid level that is being established). For products that are to be foamed the upper inlet has proven to be effective.
  • the outlet of the container 105 is connected to a descending drain hose, which is guided through an optical sensor 106 and a pump 107.
  • the speed of the pump 107 is optimally controlled using the measurement signal from the fill level measuring device 104 so that the container 105 is never completely full and never completely empty. This can also be achieved, for example, by arranging two limit switches to monitor the minimum and maximum levels. In this way, the drain hose is always full, which results in a stable signal from the optical sensor 106.
  • the signal from the optical sensor 106 is used to assess the quality of the light phase. The proportion of remaining turbidity and suspended matter can be assessed, for example.
  • the pump 107 can be designed as either a centrifugal pump or a hose pump.
  • the volume of the container 105 should be selected so that the residence time of the light phase in the container is long enough for bubbles to separate from the liquid.
  • the delivery volume of the pump 107 can be adjusted so that a filling level is maintained approximately in the middle of the container 105. This can also be made possible alternatively by one or more limit switches 400 (see Fig. 9b).
  • Such limit switches can be, for example, capacitive sensors arranged on the outer wall of the container 105. These often offer the possibility of detecting and masking out drops on the container wall.
  • the falling drain hose line connected to the outlet of the heavy phase of the separator insert II leads into another container 109, which is provided with a fill level measuring device 108.
  • a fill level measuring device 108 can be used as an alternative. Both variants are preferably non-invasive. This allows the fill level of the heavy phase in the container 109 to be determined and regulated in the same way as for the light phase.
  • the separator insert II has an optional drainage system DS, whereby the drainage liquid is collected in a drainage container 114. Drainage liquid is essentially produced when the drum comes to a standstill at the end of the batch processing and drains via this drain. All hose lines of Fig. 9 for supply and discharge lines in and out of the separation system then each lead into a sterile coupling 112. Not shown in Fig. 9 is the frame for holding the separator insert and the drive.
  • the product inlet system PZS shown in Fig. 9 the product outlet system PAS comprising the product outlets of the heavy and light phases and an optional drainage system DS associated with the PAS are separated from each other outside the separator insert and are therefore hermetic.
  • a fill level measuring device 108 or 104 is shown as an example in Fig. 9a.
  • An ultrasonic sensor element 300 is arranged below the bottom area of the container 105/109, e.g. a tank, a bottle or a bag. It sends out a signal which is reflected at the liquid boundary and received again by the ultrasonic sensor element 300.
  • the fill level can be determined directly from the travel time of the signal.
  • FIG. 9b An arrangement of two limit switches 400, which are placed on the side of the container, is shown in Fig. 9b as an alternative variant to Fig. 9a.
  • the limit switches detect an upper and a lower filling level. Exceeding the upper filling level is evaluated by the evaluation unit 500 and starts the respective pump 107/110. When the lower filling level is undershot, the respective pump is stopped again. In this way, the filling level of the container is kept between the lower and the upper filling level.
  • a single fill level can be detected and the respective pump switched on when this level is exceeded and switched off when it falls below it.
  • three or more limit switches 400 can be used, which detect at least one lower S1, one middle S2 and one upper S3 filling level in the container. To control the filling level for the container, these three filling level signals are combined with the measured values M1 of the flow meter 102 in the inlet and M2 of the flow meter 115 in the outlet of the light phase.
  • the setpoint for the pump must be calculated again according to formula a) and the correction value must be increased for a while and then reduced again.
  • the evaluation in Fig. 9a and 9b is carried out by an evaluation unit 500, which evaluates the measurement signals and thereby determines the fill level or monitors the reaching of a limit level.
  • the control of the pumps can also be initiated by this evaluation unit.
  • the measuring principle of the limit switch 400 can, for example, be based on a capacitance measurement, whereby the change in the capacitance measurement value is decisive for the evaluation.
  • Fig. 9a and 9b also have a pressure sensor 113 for determining a position pressure, which can also be used to determine the filling level, since there is a correlation between the height of the liquid column in the container and the pressure generated thereby.
  • the evaluation of this pressure measurement is also carried out with an evaluation unit, which controls the corresponding pump 107/110, for example.
  • Fig. 10 shows a modification of the first variant of the separator insert II of Fig. 1-8 for connection to the drainage system of Fig. 9.
  • the separator insert II also has a drainage outlet line 120. This is arranged in the base area 121 of the separator insert and has a liquid outlet 122 and 123 from both the drum and the housing. The rest can be identical in construction to previous variants.
  • Fig. 11 shows a second variant of a separator insert III, which can be operated as part of a separation process.
  • This Separator insert III has a bottom-side inlet via the inlet line 61 and the distributor 70 into the plate pack 67.
  • the product inlet line 61 comprises an inlet nozzle 73, which extends from the bottom of the housing 68 into the interior of the rotor 65 and opens into a distributor space 78 of a holding device 77 of the plate pack 67.
  • the holding device 77 can have a longitudinal axis that is designed parallel to the axis of rotation of the rotor 65.
  • One or more distributor channels 70 lead off from the distributor space 78, which allow the supplied starting product to be passed on radially into a separation zone of the rotor 65.
  • the product discharge 62 of the light phase is analogous to Fig. 1 -10.
  • the product discharge 63 of the heavy phase is carried out by drainage via channels in a separating plate 69, here as a closed-walled separating plate at the end of the plate package, and finally through a gripper 64 into a discharge through the product line of the product discharge 63.
  • the heavy phase and the light phase are separated at the separating plate, with the heavy phase being directed outwards around the plate and the light phase being directed and discharged inside the plate.
  • this is only one of many possible variants of a product discharge of the heavy phase.
  • the separator insert III can be designed in such a way that the rotor 65, in particular the drum 66 and the plate pack 67, can be removed from the housing 68.
  • the inlet line 61 be replaced when the separator insert III is replaced, in order to avoid exposing a subsequent batch to cross-contamination.
  • the inlet line can be attached to the housing in a replaceable and medium-tight manner using seals (not shown), e.g. sealing sleeves.
  • Fig. 11 can be modified in many ways, but shows in particular that the method can also be applied to a separator in which only the rotor with its product inlet and outlet lines is designed as a replaceable separator unit III.
  • the housing 68 can be opened - not shown - for example by forming a part of the housing as a cover. For this purpose, at least the upper receptacle must preferably be removed from the cover.
  • the residual liquid is drained via the drainage discharge line 120 into a collecting container 74 via a line element 71 connected thereto, in particular a drainage element in the form of a hose attached or plugged on.
  • the inlet line 61 in particular the inlet nozzle 73, is connected to a supply line element 72, which is connected to a container 75 with the suspension of the starting product.
  • a switching valve (not shown) can be arranged in this line element, which switches between two containers 75, e.g. to supply a demulsifier to improve the suspension.
  • the valve can be closed and the line elements can be exchanged with the containers.
  • the supply element can have a pump, e.g. a peristaltic pump, in which only the supply element comes into contact with the starting product.
  • a pump e.g. a peristaltic pump
  • Fig. 12 shows a further variant of a separator insert II, which can be operated as part of the aforementioned separation process.
  • This separator insert II has at least one connection piece 76 on its housing 1. Through this connection piece, the separator insert can be filled with an inert gas before the product to be separated enters the separator insert. In this way, the product to be separated is prevented from coming into contact with air or oxygen.
  • a second connection piece 76 can be provided on the housing 1, which is intended to discharge gases from the separator insert, so that the separator insert can be flushed with inert gas.
  • the separator insert can also be filled with sterile air and blanketed with this connection piece. The blanketing with sterile air or inert gas can be controlled using the control unit 37.
  • connection piece 76 the gas can also be sucked out of the otherwise hermetically sealed separator insert in such a way that a negative pressure is created in the separator insert, which not only reduces the contact with the remaining oxygen, but also reduces the frictional power of the rotating drum 66, which now rotates in an atmosphere of lower density.
  • a compressed gas e.g. compressed air
  • the gas connections 76 can also be introduced via one or more of the gas connections 76, which additionally facilitates the emptying of the housing via the drainage line.
  • the foam formation occurs, among other things, because the different phases relax when they exit the drum of the separator insert.
  • "Relax” in this context means that the pressure under which the liquid inside the drum 3 is reduced when the liquid leaves the drum 3. This pressure reduction promotes the formation of bubbles or foaming of the escaping liquid phases.
  • the housing 1 can be supplied with sterile air A or an inert gas by means of a suitable device - for example from a pressurized tank, downstream of which is a controllable throttle or the like, and/or via a pump (indicated by an arrow in front of the connection nozzle) - and can be pressurized by this supply.
  • a suitable device for example from a pressurized tank, downstream of which is a controllable throttle or the like, and/or via a pump (indicated by an arrow in front of the connection nozzle) - and can be pressurized by this supply.
  • the sterile air or an inert gas can be forced through a sterile filter (not shown) into the drainage container 114 in order to put it under pressure. Since the drainage container is in pressure and fluid connection with the housing 1 of the separator insert and also the container 105 for the light phase, the pressure in this container 105 is also increased and outgassing is reduced or prevented. Analogously, the sterile air or an inert gas can be forced through a sterile filter (not shown) into the container 105 for the light phase in order to put it under pressure. Since the container for the light phase is in pressure and fluid connection with the housing 1 of the separator insert and also the drainage container 114, the pressure in this container 114 is also increased.
  • a value between 10 and 300 mbar has proven to be a suitable overlay pressure.
  • the flow rate of the sterile air or inert gas is selected between 0.1 and 10 l/min depending on the tendency to form foam. This flow rate can be fed into the containers or bags continuously or it can be the average value of a pulsed introduction, whereby the appropriate pulse-pause ratio for the respective foam can be determined by testing.
  • a foam-reducing agent can be injected into the housing 1 through the connection piece 76 (see Fig. 12) on the separator insert. Since the housing is in pressure and fluid connection with the bags or containers 105 and 114 of the light phase and the drainage, the foam-reducing agent also reaches these containers and reduces the foam formation there.
  • the foam-reducing agent can also be injected directly into the bags or containers 105, 109 and/or 114 in a further embodiment in order to reduce or prevent the formation of foam therein.
  • stator units 4a, 5a are stator stator units 4a, 5a

Landscapes

  • Centrifugal Separators (AREA)

Abstract

L'invention concerne un appareil de séparation (200) pour la séparation d'une suspension avec un séparateur centrifuge (100) en au moins deux phases fluides, le séparateur centrifuge (100) ayant un cadre (I) et un boîtier (1) qui n'est pas rotatif pendant le fonctionnement, et un insert de séparateur (II, III) qui est conçu sous la forme d'une unité interchangeable pré-installée, l'insert de séparateur (II, III) ayant au moins les éléments suivants: a) un rotor (2, 65) qui peut entraîné en rotation autour d'un axe de rotation (D) et qui comporte un tambour (3, 66) doté d'une paroi de tambour; b) de préférence un moyen de séparation disposé dans le tambour (3, 66); au moins une conduite d'alimentation en produit (8) et au moins une conduite d'évacuation de produit (10, 34); c) les régions de l'insert de séparateur (II, III) qui entrent en contact avec le produit étant réalisées partiellement ou complètement à partir de plastique; de l'air stérile a ou un gaz inerte pouvant être appliqué directement ou indirectement au boîtier (1) et/ou à un ou plusieurs récipients supplémentaires (105, 109, 114) au moyen d'un dispositif approprié à cet effet, et le boîtier et/ou un ou plusieurs récipients supplémentaires pouvant, au moyen de cette application, être soumis à une pression de superposition, et/ou le boîtier pouvant être soumis à une pression négative au moyen du dispositif.
PCT/EP2024/063267 2023-06-07 2024-05-14 Appareil de séparation pour la séparation d'une suspension Ceased WO2024251477A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202480037129.1A CN121263250A (zh) 2023-06-07 2024-05-14 用于分离悬浮液的分离设备
IL324927A IL324927A (en) 2023-06-07 2024-05-14 Separation device for separating suspension

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE202023103162.5 2023-06-07
DE202023103162 2023-06-07
DE202024102397.8 2024-05-08
DE202024102397.8U DE202024102397U1 (de) 2023-06-07 2024-05-08 Trennanlage zum Trennen einer Suspension

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WO2024251477A1 true WO2024251477A1 (fr) 2024-12-12

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE894826C (de) * 1942-10-19 1953-10-29 Westfalia Separator Ag Verfahren und Einrichtung zur Behandlung stark schaeumender Fluessigkeiten in Schleudern
DE3430264A1 (de) 1984-08-17 1986-02-27 Me Meerestechnik-Elektronik Gmbh, 2351 Trappenkamp Vorrichtung zur bestimmung des schwebstoffanteiles von wasser
WO2012125480A1 (fr) 2011-03-11 2012-09-20 Fenwal, Inc. Dispositifs de séparation à membrane, systèmes et procédés les utilisant, et systèmes et procédés de gestion de données
EP2273124B1 (fr) 2009-07-06 2015-02-25 Levitronix GmbH Pompe centrifuge et procédé d'équilibrage de la poussée axiale dans une pompe centrifuge
DE102017128027A1 (de) 2017-11-27 2019-05-29 Gea Mechanical Equipment Gmbh Separator
WO2020173545A1 (fr) 2019-02-26 2020-09-03 Gea Mechanical Equipment Gmbh Séparateur
EP3885050A1 (fr) 2020-03-26 2021-09-29 Alfa Laval Corporate AB Séparateur centrifuge pour la séparation d'un mélange liquide
WO2023036786A1 (fr) * 2021-09-07 2023-03-16 Gea Westfalia Separator Group Gmbh Insert de séparateur, séparateur, et procédé d'échange d'un insert de séparateur

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE894826C (de) * 1942-10-19 1953-10-29 Westfalia Separator Ag Verfahren und Einrichtung zur Behandlung stark schaeumender Fluessigkeiten in Schleudern
DE3430264A1 (de) 1984-08-17 1986-02-27 Me Meerestechnik-Elektronik Gmbh, 2351 Trappenkamp Vorrichtung zur bestimmung des schwebstoffanteiles von wasser
EP2273124B1 (fr) 2009-07-06 2015-02-25 Levitronix GmbH Pompe centrifuge et procédé d'équilibrage de la poussée axiale dans une pompe centrifuge
WO2012125480A1 (fr) 2011-03-11 2012-09-20 Fenwal, Inc. Dispositifs de séparation à membrane, systèmes et procédés les utilisant, et systèmes et procédés de gestion de données
DE102017128027A1 (de) 2017-11-27 2019-05-29 Gea Mechanical Equipment Gmbh Separator
WO2020173545A1 (fr) 2019-02-26 2020-09-03 Gea Mechanical Equipment Gmbh Séparateur
EP3885050A1 (fr) 2020-03-26 2021-09-29 Alfa Laval Corporate AB Séparateur centrifuge pour la séparation d'un mélange liquide
WO2023036786A1 (fr) * 2021-09-07 2023-03-16 Gea Westfalia Separator Group Gmbh Insert de séparateur, séparateur, et procédé d'échange d'un insert de séparateur

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CN121263250A (zh) 2026-01-02

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