WO2017005801A1 - Séparateur tangentiel - Google Patents

Séparateur tangentiel Download PDF

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Publication number
WO2017005801A1
WO2017005801A1 PCT/EP2016/065999 EP2016065999W WO2017005801A1 WO 2017005801 A1 WO2017005801 A1 WO 2017005801A1 EP 2016065999 W EP2016065999 W EP 2016065999W WO 2017005801 A1 WO2017005801 A1 WO 2017005801A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
annular gap
container
tangential
tangential separator
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/EP2016/065999
Other languages
German (de)
English (en)
Inventor
Peter Maier
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.)
Pwk Wasser & Kunststofftechnik & Co KG GmbH
Original Assignee
Pwk Wasser & Kunststofftechnik & Co KG 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
Application filed by Pwk Wasser & Kunststofftechnik & Co KG GmbH filed Critical Pwk Wasser & Kunststofftechnik & Co KG GmbH
Publication of WO2017005801A1 publication Critical patent/WO2017005801A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/08—Vortex chamber constructions
    • B04C5/103—Bodies or members, e.g. bulkheads, guides, in the vortex chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2405—Feed mechanisms for settling tanks
    • B01D21/2411—Feed mechanisms for settling tanks having a tangential inlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2405—Feed mechanisms for settling tanks
    • B01D21/2416—Liquid distributors with a plurality of feed points
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • B01D21/267—Separation of sediment aided by centrifugal force or centripetal force by using a cyclone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/02—Construction of inlets by which the vortex flow is generated, e.g. tangential admission, the fluid flow being forced to follow a downward path by spirally wound bulkheads, or with slightly downwardly-directed tangential admission
    • B04C5/04—Tangential inlets

Definitions

  • the invention relates to a tangential separator (TS) for preferably consumer-free separation of particles from liquid fluids according to the preamble of claim 1.
  • TS tangential separator
  • the object of the invention is therefore to provide a separator with which particles can be separated from a continuously occurring fluid stream, wherein In particular, the deposition of particles with a size below 40 ⁇ should be possible.
  • this object is achieved by a tangential separator (TS) according to independent claim 1.
  • TS tangential separator
  • the tangential separator according to the invention is suitable for separating sedimentable particles from a liquid fluid, wherein the tangential separator a container with at least one fluid inlet for supplying the fluid into the container, at least one fluid outlet for discharging fluid from the container and at least one sampling point for the removal of particles.
  • both the fluid inlet and the fluid outlet are arranged in the upper region of the container, while the removal point is arranged in the lower region of the container.
  • at least one annular gap is provided which is in connection with the fluid inlet in such a way that the fluid can be introduced into the annular gap. The fluid thus sinks after introduction into the container within the annular gap.
  • the at least one annular gap is designed to be open at the bottom, and in this open region, fluid can flow out of the annular gap into at least one central riser channel of the container, from which fluid can then be discharged via the fluid outlet.
  • the volume within the at least one riser channel is greater than the volume within the at least one annular gap. This refers in each case to the volume of liquid fluid in the annular gap and in the riser.
  • upper region and lower region in connection with the invention do not mean that the fluid inlet and the fluid outlet must be located at the uppermost point of the tangential separator or container, but instead in that the fluid inlet and the fluid outlet are arranged in an upper region of the container such that supplied fluid can sink downwards in the annular gap. Fluid can be withdrawn continuously via the fluid outlet when it has flowed upwards again in the central riser channel. Particles can be withdrawn in a lower area where they accumulate due to sedimentation.
  • the TS can be operated according to the principle of the corresponding water columns, wherein as the new fluid flows in via the inlet, purified fluid leaves the container via the fluid outlet.
  • the flow direction of the fluid is reversed in the lower region of the container, wherein the volume ratios between the at least one annular gap and the at least one riser channel are selected such that the falling velocity in the annular gap is greater than the rising velocity in the riser channel.
  • the rate-of-fall rate-to-climb rate factor is variable and can be selected depending on the density of the particles to be separated.
  • further means are provided for accelerating and tangentially feeding the liquid fluid into the annular gap in order to rotate the fluid in the annular gap.
  • This rotational movement of the fluid within the annular gap has the advantage that the fluid is distributed uniformly in the annular gap and decreases in the direction of the bottom.
  • the tangential separator is suitable for the separation of particles, which usually can not be separated by filtration or only with great effort. This is the case, for example, for particles with a size below silt ( ⁇ 63 ⁇ ). Due to the design of the tangential separator also particles smaller than 40 ⁇ m can be deposited. In practice, it has been found that particles ⁇ 20 ⁇ m can also be deposited, which is very difficult, for example, with centrifuges. The tangential separator can also be used continuously with large flow rates. operated, is low maintenance and due to its simple design little susceptible to interference. The separated particles can also be removed continuously. It has been found that particles can be almost completely removed from a fluid. The fluid can have a dirt load of> 30%. For example, belt flow filters, particle filters, centrifuges and oblique clarifiers can be replaced with the TS according to the invention.
  • the volume within the at least one central riser channel is for this purpose preferably greater by a multiple than the volume within the at least one annular gap.
  • the ratio between volume within the at least one riser channel and volume within the at least one annular gap is greater than 2: 1, preferably greater than 3: 1, more preferably greater than or equal to 4: 1.
  • the ratio can be selected, for example, up to 10: 1.
  • the prerequisite for the sedimentation of the particles in the soil area is a corresponding density difference between the liquid fluid and the particles.
  • the TS can basically be used for all liquid fluids, such as water or oils. In principle, all particles with a density> 1, 3 can be separated.
  • the driving style of the TS can depend on the
  • Particelsink Alfa be controlled via the fluid inlet.
  • the at least one annular gap and the at least one central riser channel can be realized in different ways and at different positions within the container.
  • partitions, pipes, etc. can be used for this purpose.
  • the annular gap is formed by a peripheral partition wall on the inner wall of the container, wherein the riser passage runs centrally within the annular gap.
  • the tangential separator is cone-shaped in its lower region. This can be achieved for example with a base body of a hollow cylinder, the side walls converge in the lower region and thus form a cone bottom. The sampling point for the discharge of particles can then be provided at the lowest end of the cone bottom.
  • al-separator or container may for example also be designed as a full cone.
  • the opening angle of the cone bottom or the full cone is preferably in the range of 50-70 °, in particular about 60 °.
  • Such a conical design of at least the bottom in particular facilitates the removal of accumulating in this area particles and also the cleaning of the TS.
  • the vertical distance between the downwardly open region of the at least one annular gap and the resulting fluid level can be selected accordingly.
  • this distance is> 0.1 m, in particular it is between 1 -2 m. However, it can be made larger (for example, 1 -6 m). It is thus a total of a tangential separator with corresponding dimensions.
  • the fluid inlet can be located above the self-adjusting fluid level, so that fluid flows continuously from above onto the fluid in the annular gap.
  • the fluid supply line may be located, for example, at a distance of 10-80 mm above the fluid level. In particular, a distance of about 50 mm has proved to be advantageous.
  • the means for accelerating the fluid can be formed by an acceleration section, on which the fluid is accelerated and guided into the annular gap such that a rotational movement of the fluid occurs therein.
  • the fluid can be accelerated before the first introduction into the annular gap and directed in a direction which generates a corresponding rotational movement of the fluid in the annular gap upon tangential introduction of the fluid into the annular gap.
  • branch off fluid from the annular gap to accelerate it and to return it into the annular gap in such a way that the desired rotational movement occurs.
  • an acceleration section can be provided, with which at least a partial flow of the fluid from the annular gap to, for example, a pump within the acceleration section can be guided, wherein the acceleration section connects two openings in the annular gap.
  • the acceleration section can be formed by a tangential discharge from the annular gap to the pump and a tangential return from the pump back to the annular gap. The fluid thus tangentially enters the annular gap and thereby generates the desired rotational movement.
  • the fluid is returned to the annular gap via the return line below the self-adjusting fluid level.
  • the TS in one embodiment of the invention comprises means for supplying substances to the fluid in the annular gap.
  • the flocculant can be distributed homogeneously in the annular gap.
  • These supply means may be arranged in particular in front of the described acceleration section, so that the flocculant can be metered in at this point and distributed uniformly in the sink channel or annular gap.
  • the tangential separator may be that the removal point is connected to a delivery means for the discharge of particles.
  • the conveying means may be, for example, a rotary valve or a screw pump.
  • a collecting device can be arranged in the upper region of the container, via which fluid can be continuously withdrawn from the riser channel and supplied to the fluid outlet. In this way, short circuit flows within the rising fluid can be prevented.
  • this collection device may be an annular bus (e.g., crown weir).
  • FIG. 1 shows a schematic longitudinal section through an embodiment of the tangential separator according to the invention
  • FIG. 2 is a schematic plan view of a tangential separator according to FIG
  • FIG. 1 shows an embodiment of the tangential separator according to the invention, which is formed essentially by a container 1 with a leveling foot 2.
  • This container is also called silo container in the following.
  • This silo container 1 consists of a hollow cylinder with parallel side walls, which merge funnel-shaped in its lower part in a cone bottom 7.
  • an annular gap 4 is formed by means of a peripheral partition wall 3.
  • the annular gap 4 is thus formed between the outer sheath of the container 1 and the partition wall 3.
  • the distance between the partition wall 3 and the inner wall of the container 1 is constant.
  • the partition wall 3 may be secured by means of brackets 23 to the inner wall of the container 1, wherein the brackets are designed so that they do not adversely affect the flow of the fluid.
  • the thus formed annular gap 4 is at least partially, preferably completely, downwardly open, so that there is a connection between the annular gap and a central region 1 1 in the silo container.
  • the annular gap 4 can be circumferentially open, or even in sections.
  • the center region 1 1 represents the riser, in which fluid can rise.
  • the partition wall 3 terminates in the region of the silo container 1, in which the parallel side walls merge into the cone bottom 7.
  • the container 1 may also be formed as a full cone.
  • a dividing wall in the form of a funnel can then be provided which ends at a certain distance from the lowest point of the full cone.
  • the silo container 1 can be supplied with fluid via a fluid inlet 20, which is located in the upper region of the container.
  • the fluid is introduced outside into the annular gap 4, so that it can sink down in this.
  • This fluid flow within the annular gap 4 is indicated in FIG. 1 by an arrow and the reference numeral 5.
  • the fluid When the fluid reaches the cone bottom 7, its direction of flow is reversed, which is again indicated in FIG. 1 by an arrow and the reference numeral 5 '.
  • the particles present in the fluid sink downwards, so that a particle stream 6 is formed downwards, which is likewise marked with an arrow in FIG.
  • So sedimented particles can be discharged at the lower end of the cone bottom 7. This can be done for example via an outlet valve 9. Furthermore, the discharge can take place in continuous or discontinuous operation. A continuous discharge, for example, via a rotary valve or screw pump, which is connected to the outlet 9.
  • a fastening 10 may be provided for a knocker / vibrator unit. With such a unit, vibrations can be introduced into the cone bottom 7 to release accumulated particles from the inner wall of the cone bottom 7 and supply it to the outlet 9. Furthermore, suitable measuring methods can be used to determine the fill level of particles in the cone bottom 7, so that the particle discharge at the outlet 9 can be regulated, for example, via a programmable logic controller (PLC control).
  • PLC control programmable logic controller
  • the fluid is led out after the separation of the particles in the upper region of the container 1 via a fluid outlet 21 from the silo container 1.
  • a collecting line 22 can be provided, with which ascending fluid 5 "can be withdrawn continuously over a large surface area and fed via a connection 25 to at least one outlet 21.
  • the collecting line 22 can be ring-shaped and attached to the silo container 1 by means of holders 24 This annular collecting line 22 can also be taken from the schematic plan view of FIG.
  • the fluid drain is expediently carried out according to the Bernoulli principle and is designed so overflow safely.
  • a drain valve 8 can also be provided in the cone bottom 7, in order to be able to discharge fluid from the silo container 1 in the event of faults or the switching off of the tangential separator and thus be able to empty the container.
  • At least one partial flow of the fluid can be supplied to an acceleration section 12 below the fluid inlet 21, as can likewise be seen from FIG.
  • This acceleration section 12 connects two openings within the wall of the silo tank 1 with each other and has a pump 32 through which the branched fluid partial flow can be accelerated.
  • the acceleration can be selected depending on the task, whereby a fluid velocity in the order of> 1 m / s can be effected.
  • the diversion of the partial flow from the annular gap 4 takes place as the return line tangentially. First, the fluid is branched off via a tangential outlet 30, accelerated by the pump 32 and then guided back into the annular gap 4 via a tangential return 31.
  • the annular gap can thus also be referred to as a rotation range.
  • the fluid distributes uniformly in the annular gap 4 and sinks in the direction of the cone bottom.
  • the fluid is preferably conducted back into the annular gap below the self-adjusting fluid level, whereby e.g. Returns approximately 150mm below the level have been found to be advantageous.
  • the dimensions of the silo container 1 and the annular gap 4 are selected so that the volume within the center region 11 is greater than the volume within the annular gap 4. For example, ratios in the order of 2: 1 to 10: 1 may be advantageous. LIST OF REFERENCE NUMBERS

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Cyclones (AREA)

Abstract

L'invention concerne un séparateur tangentiel (TS) servant à séparer des particules sédimentables présentes dans un fluide liquide, le séparateur tangentiel comprenant un réservoir (1) muni d'au moins une entrée de fluide (20) pour l'amenée du fluide dans le réservoir (1), une sortie de fluide (21) pour l'évacuation du fluide hors du réservoir (1), et au moins un point de prélèvement (9) pour le prélèvement des particules. Le séparateur tangentiel est caractérisé en ce que l'entrée de fluide (20) et la sortie de fluide (21) sont agencées dans la partie supérieure du réservoir (1), tandis que le point de prélèvement (9) est agencé dans la partie inférieure du réservoir (1). Par ailleurs, au moins une fente annulaire (4) communique avec l'entrée de fluide (20) de telle manière que le fluide peut être introduit dans la fente annulaire (4). La fente annulaire (4) est ouverte vers le bas et dans cette partie ouverte, le fluide peut s'écouler hors de la fente annulaire (4) dans au moins un canal montant central (11) du réservoir (1) hors duquel le fluide liquide peut être évacué par la sortie de fluide (21). Le volume intérieur du ou des canaux montants (11) est plus grand que le volume intérieur de la ou des fentes annulaires (4), et le séparateur comprend des moyens d'accélération et d'amenée tangentielle du fluide liquide dans la fente annulaire (4).
PCT/EP2016/065999 2015-07-07 2016-07-06 Séparateur tangentiel Ceased WO2017005801A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102015110953.0 2015-07-07
DE102015110953 2015-07-07
DE102015114519.7A DE102015114519A1 (de) 2015-07-07 2015-08-31 Tangential-Separator (TS)
DE102015114519.7 2015-08-31

Publications (1)

Publication Number Publication Date
WO2017005801A1 true WO2017005801A1 (fr) 2017-01-12

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ID=57583847

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/065999 Ceased WO2017005801A1 (fr) 2015-07-07 2016-07-06 Séparateur tangentiel

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DE (1) DE102015114519A1 (fr)
WO (1) WO2017005801A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017109683A1 (de) * 2017-05-05 2018-11-08 Bvg Bauer Verfahrenstechnik Gmbh Vorrichtung zur Trennung von Festteilchen aus Suspensionen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB756741A (en) * 1953-07-01 1956-09-12 Angus Robertson Murray Improvements relating to apparatus for separating liquid from a gaseous fluid stream
US2961099A (en) * 1958-04-14 1960-11-22 Chain Belt Co Apparatus for separation of liquids or of solids from a liquid
DE1255082B (de) * 1963-02-18 1967-11-30 Walter Preiss Vorrichtung zum Klaeren von verschmutzten OElen und aehnlichen viskosen Fluessigkeiten durch Absetzen
US3698555A (en) * 1970-11-23 1972-10-17 John R Conner Self-cleaning filter system
GB2488995A (en) * 2011-03-14 2012-09-19 Cde Global Ltd Solid and liquid separation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB756741A (en) * 1953-07-01 1956-09-12 Angus Robertson Murray Improvements relating to apparatus for separating liquid from a gaseous fluid stream
US2961099A (en) * 1958-04-14 1960-11-22 Chain Belt Co Apparatus for separation of liquids or of solids from a liquid
DE1255082B (de) * 1963-02-18 1967-11-30 Walter Preiss Vorrichtung zum Klaeren von verschmutzten OElen und aehnlichen viskosen Fluessigkeiten durch Absetzen
US3698555A (en) * 1970-11-23 1972-10-17 John R Conner Self-cleaning filter system
GB2488995A (en) * 2011-03-14 2012-09-19 Cde Global Ltd Solid and liquid separation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017109683A1 (de) * 2017-05-05 2018-11-08 Bvg Bauer Verfahrenstechnik Gmbh Vorrichtung zur Trennung von Festteilchen aus Suspensionen

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Publication number Publication date
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