EP3661653B1 - Cyclone dépoussiéreur à courant continu - Google Patents

Cyclone dépoussiéreur à courant continu

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Publication number
EP3661653B1
EP3661653B1 EP18758550.0A EP18758550A EP3661653B1 EP 3661653 B1 EP3661653 B1 EP 3661653B1 EP 18758550 A EP18758550 A EP 18758550A EP 3661653 B1 EP3661653 B1 EP 3661653B1
Authority
EP
European Patent Office
Prior art keywords
pipe section
dispersion
tube section
cyclone separator
wall
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.)
Active
Application number
EP18758550.0A
Other languages
German (de)
English (en)
Other versions
EP3661653A1 (fr
EP3661653C0 (fr
Inventor
Tayyar Yücel Bayrakci
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.)
Cyfract Ug Haftungsbeschraenkt
Original Assignee
Cyfract Ug Haftungsbeschraenkt
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 Cyfract Ug Haftungsbeschraenkt filed Critical Cyfract Ug Haftungsbeschraenkt
Publication of EP3661653A1 publication Critical patent/EP3661653A1/fr
Application granted granted Critical
Publication of EP3661653B1 publication Critical patent/EP3661653B1/fr
Publication of EP3661653C0 publication Critical patent/EP3661653C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
    • B04C3/06—Construction of inlets or outlets to the vortex chamber
    • 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
    • B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
    • B04C2003/003—Shapes or dimensions of vortex chambers
    • 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
    • B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
    • B04C2003/006—Construction of elements by which the vortex flow is generated or degenerated

Definitions

  • the invention relates to a direct current cyclone separator for separating particles from a dispersion containing the particles and a fluid.
  • a suspension is particularly suitable as the dispersion.
  • the invention further relates to the use of a direct current cyclone separator.
  • filters are used, for example, in which the dispersion is passed through a membrane.
  • the particles are deposited on the membrane, which must therefore be replaced after a certain period to prevent clogging.
  • An alternative to this are cyclone separators, also known as centrifugal separators. Cyclone separators are designed either as counterflow cyclones, also known as tangential cyclones, or as coflow cyclones, also known as axial separators.
  • particles are subject to the influence of bulk forces and fluid forces.
  • Bulk forces in a swirling flow include, for example, centrifugal forces and the acceleration due to gravity.
  • Fluid forces in a swirling flow include, for example, aerodynamic forces caused by a radial velocity gradient.
  • a buoyancy force acts on the particles due to a gradient of dynamic pressure. The particles are thus drawn towards the faster flow components.
  • the dispersion is directed into a vessel with a rounded side wall, such as a barrel or a cone, whereby the
  • the introduction of the dispersion occurs tangentially.
  • the axis of the container is therefore essentially vertical and perpendicular to the original direction of flow of the dispersion, and consequently perpendicular to the direction in which the dispersion enters the container. Therefore, the dispersion is forced into a circular or spiral shape, which is determined by the container wall. Due to the typically increased weight of the particles, they are forced radially outwards and slowed down by the wall. As a result, the particles collect at the bottom of the container.
  • the fluid is usually discharged from an outlet located vertically above the bottom, typically above the point where the dispersion enters the container.
  • the space requirement is increased, and retrofitting existing systems with such a counterflow cyclone separator is therefore usually not possible.
  • the direction in which the fluid is discharged from the counterflow cyclone separator does not correspond to the direction in which the dispersion enters the separator, necessitating further deflections of the dispersion.
  • a comparatively high pressure loss occurs for the fluid and/or the particle separation.
  • the dispersion is set into a rotational motion around an axis along the direction of its movement.
  • This motion is usually generated by guide vanes arranged within a pipe section of the direct current cyclone separator, or by a tangentially introduced secondary current.
  • This imparts a tangential velocity to the dispersion, with the maximum velocity of the dispersion, i.e., its absolute value, being located essentially midway between a pipe wall and the center of the pipe.
  • the particles are moved radially outwards, while the fluid is moved essentially in the center of the direct current cyclone separator.
  • the maximum velocity is not located at the edge of the pipe section, the force acting on particles in the radial direction decreases the further they move from the area of maximum velocity, which is why only a few particles accumulate at the edge.
  • the rotation of the dispersion leads to the formation of a Hamel-Oseen vortex, which essentially corresponds to a rigid body vortex in the core region and, radially outwards, to a potential vortex extending towards the pipe wall.
  • a region of maximum absolute velocity is formed, which can be considered a sink with respect to the fluid forces, and towards which the particles are moved.
  • the direct-flow cyclone separator can be retrofitted into existing systems. Manufacturing costs for such a direct-flow cyclone separator are also reduced. Furthermore, only a comparatively small pressure drop occurs, as it is not necessary to deflect the dispersion perpendicular to the direction of flow. However, compared to the counter-current cyclone separator, the efficiency of the direct-flow cyclone separator and the separation efficiency between the particles and the fluid are reduced. Particularly in the direct-flow hydrocyclone configuration, the separation rate is further reduced due to the essentially identical density of the particles and the fluid.
  • EP 1 512 453 A1 Figure 1 shows a device for separating solid particles and liquids from a gas stream, comprising a hollow cylindrical housing with square recesses for attaching an inlet guide apparatus.
  • the inlet guide apparatus has an increasing angle of inclination.
  • the inlet guide apparatus features guide elements that project inwards from the inner wall of the hollow cylindrical housing.
  • the invention is based on the objective of providing a particularly suitable direct current cyclone separator. to specify, advantageously with an increased efficiency.
  • the direct current cyclone separator is used to separate particles from a dispersion containing the particles and a fluid.
  • the dispersion consists of the particles and the fluid.
  • the density of the particles and the density of the fluid are, for example, essentially the same. In particular, the ratio is...
  • the densities are equal to 1 or at least between 0.95 and 1.05, or between 0.99 and 1.01, or between 0.995 and 1.005.
  • the particles have, for example, a size of 1 nm to 1 ⁇ m, or preferably larger than 1 ⁇ m. Particularly preferably, the particles have a size between 0.1 mm and 1 mm or larger.
  • the particles consist, for example, of a single substance or of different substances or elements. In particular, the particles are heterogeneous.
  • sand forms at least part of the particles.
  • the fluid is, for example, a gas or, more preferably, a liquid.
  • the fluid is incompressible and a liquid.
  • the dispersion is a suspension.
  • the fluid is, for example, water, which is taken, in particular, from a flowing body of water or a sea.
  • the fluid is intended to be used, for example, as cooling water in an industrial plant or as process water in mining.
  • the fluid is intended to be fed into a desalination plant, and the dispersion is seawater in which, for example, particles, in particular sand, are present.
  • the DC cyclone separator is an axial separator.
  • the DC cyclone separator is a centrifugal separator designed to be axially unidirectional.
  • the dispersion is guided through the DC cyclone separator in one direction, and this direction is not changed, particularly for the purpose of separation.
  • the direction of flow is constant. In other words, the direction in which the dispersion, or at least the fluid, is guided is not altered.
  • the direct current cyclone separator comprises a hollow cylindrical pipe section designed to guide the dispersion in the direction of flow. During operation, the dispersion is guided through the hollow cylindrical pipe section.
  • the direction of flow is advantageously parallel to the axis of the hollow cylindrical pipe section, at least in some sections.
  • the pipe section has an inner wall along which the dispersion is guided during operation.
  • the hollow cylindrical pipe section has a substantially circular cross-section.
  • the hollow cylindrical pipe section is suitably Free of any other components of the DC cyclone separator, allowing the dispersion to flow through it relatively freely. In other words, there is no other component inside the inner wall, and the inner wall thus forms a cavity.
  • the inner wall of the pipe section has an internal thread.
  • the inner wall has a groove that runs helically along the guiding direction.
  • the groove forms a helix, preferably a curve that winds around the surface of a cylinder with a certain gradient, the cylinder being provided, in particular, by the inner wall.
  • the internal thread winds around the axis of the hollow cylindrical pipe section.
  • the inner wall has the internal thread along its entire length in the guiding direction.
  • the length of the pipe section is, for example, equal to the diameter of the pipe section, greater than the diameter of the pipe section, greater than or equal to twice the diameter of the pipe section, or greater than or equal to three times the diameter of the pipe section.
  • the length of the pipe section is greater than or equal to 10, 20, 50, 100, or 150 times the diameter of the pipe section.
  • the internal thread serves to generate swirl in the dispersion, so that after passing through the internal thread, it exhibits a velocity component tangential, i.e., perpendicular to the guiding direction.
  • the internal thread is the swirl generator.
  • the internal thread imparts a rotational motion to the dispersion in addition to its translational motion along the guiding direction, with the rotational motion being perpendicular to the guiding direction.
  • the tangential velocity component is applied by the internal thread to the layers of dispersion moving along the inner wall, and due to viscosity or similar factors, this component is transferred to the further, inner regions of the dispersion. Consequently, the dispersion exhibits a non-constant velocity profile.
  • the outer regions of the dispersion i.e., those located relatively close to the inner wall, particularly in the area of the inwardly projecting extension, exhibit the highest velocity due to the internal thread.
  • This velocity corresponds to the velocity predominant due to the dispersion's movement along the guiding direction, plus the velocity imparted by the internal thread.
  • the portion of the dispersion located primarily in the center exhibits only the velocity component in the guiding direction. Due to the viscosity of the dispersion, the velocity increases essentially linearly from the center of the pipe section to the inner wall, so that the rotational motion of the dispersion essentially corresponds to that of a solid.
  • the particles are moved radially outwards towards the inner wall of the pipe section relatively efficiently due to centrifugal force, particularly in conjunction with the fluid force.
  • the force acting on the particles increases radially with decreasing distance from the inner wall.
  • the particles are moved more strongly outwards the further they are located, leading to a relatively sharp separation between the particles and the fluid in the dispersion.
  • the particles themselves move primarily along the helical path defined by the pitch of the internal thread. No moving parts are required to separate the particles from the dispersion, which reduces construction costs and the potential for defects. Furthermore, efficiency is increased.
  • the particles are removed from the fluid by means of a suitable separation chamber, which is expediently located downstream of the pipe section.
  • an efficiency i.e. the ratio of the fluid discharged from the direct current cyclone separator to the volume of the dispersion introduced into the direct current cyclone separator, of up to 80% is achieved, whereby a particle separation (particle separation efficiency) of up to 95% is achieved during operation.
  • the internal thread has a thread formed by means of a groove.
  • the thread corresponds to the groove, and the thread is helically shaped along the guiding direction, with the inner wall thus grooved to form the thread.
  • the internal thread preferably has a number of such threads. This improves swirl generation in the dispersion.
  • the number of threads is between two and 100, between four and 20, and, for example, equal to 12, which leads to comparatively effective swirl generation, particularly reducing the formation of vortices.
  • manufacturing costs are comparatively low.
  • the threads are provided, for example, by means of grooves which, for instance, have a substantially rectangular cross-section.
  • the threads are rounded, and the cross-section of each thread is suitably handle-shaped and/or auricle-shaped.
  • the cross-section of each passage is at least partially spiral, in particular logarithmic spiral, and/or curved. Consequently, the hollow cylindrical tube section essentially has a cross-section shaped like a gear or saw blade.
  • the cross-section is designed in the manner of a freewheel. Due to the rounded shapes, the formation of unwanted vortices, which would otherwise reduce efficiency, is further reduced.
  • the helix angle of the internal thread increases in the guiding direction.
  • the helix angle starts at 0° and increases continuously, thus further preventing the formation of vortices.
  • the rotational speed of the dispersion about an axis along the guiding direction increases continuously, which further increases efficiency.
  • the helix angle of the internal thread corresponds to the helix angle of any threads present, and the helix angle of the threads is, in particular, the same, at least at the same position in the guiding direction.
  • the helix angle is, in particular, the angle that the internal thread, especially the thread, forms with the guiding direction.
  • the helix angle is between 15° and 60°.
  • the dispersion exhibits essentially the same velocity component in the guiding direction as in the tangential direction in the region of the inner wall.
  • the angle of inclination is chosen such that a subcritical swirl is formed, the swirl being determined, in particular, by the ratio of the velocity component in the tangential direction to the velocity component in the guiding direction, and corresponding, for example, to this ratio.
  • the turbulence intensity is reduced.
  • a subcritical swirl (reduced turbulence intensity) forms up to a critical swirl degree
  • a supercritical swirl increased turbulence intensity
  • the subcritical swirl is particularly advantageous for particle separation.
  • the swirl degree results, in particular, from the ratio of the tangential to the axial momentum flux.
  • a second, hollow cylindrical pipe section is connected downstream of the first pipe section.
  • the two pipe sections are advantageously arranged coaxially.
  • the second pipe section adjoins the first directly, and the first pipe section preferably transitions directly into the second pipe section.
  • the second pipe section is integrally formed with the second pipe section and is thus integral, particularly monolithic, with it.
  • the second pipe section preferably has a substantially circular cross-section.
  • the second pipe section has the same inner diameter as the first pipe section on the side facing the first pipe section, which prevents turbulence of the dispersion or fluid during the transition from the first pipe section to the second pipe section.
  • the second pipe section thus also has an inner wall, and the dispersion, or at least the fluid and the particles separated therefrom, are also guided through the second pipe section in the direction of flow during operation, specifically from the first pipe section.
  • the inner wall of the second pipe section has an internal thread at least partially, and in particular completely, wherein the internal thread of the first pipe section advantageously transitions directly into the internal thread of the second pipe section.
  • the thread(s) of the internal thread(s) are aligned.
  • the helix angle of the internal thread of the first pipe section at the transition is equal to the helix angle of the internal thread of the second pipe section.
  • the inner wall of the second pipe section is smooth, at least partially, and in particular completely.
  • a baffle is arranged in the second pipe section. This baffle is positioned, in particular, centrally within the second pipe section and preferably on the axis of the second pipe section.
  • the baffle body is rotationally symmetrical, or more preferably rotationally symmetrical, with respect to the axis of the second pipe section.
  • the baffle body is, in particular, flow-optimized.
  • the baffle body is designed in a teardrop shape, with the thickened end directed, in particular, towards the pipe section. In this way, the fluid resistance of the baffle body is reduced, and turbulence is avoided.
  • Guide vanes extending radially outwards are attached to the baffle body, in particular by integral part thereof. In other words, the path of the guide vanes has at least one component in the radial direction.
  • the guide vanes extend between the baffle body and the inner wall of the second pipe section, i.e., at least partially radially and outwards with respect to the baffle body.
  • the guide vanes extend at least partially tangentially and are preferably spirally curved.
  • the guide vanes are spaced apart from the inner wall of the second pipe section.
  • the radially outer portion of the dispersion is influenced relatively little by the guide vanes. Because of this distance, the rotational movement of the dispersion is maintained after passing through the dam and the guide vanes. the rotational motion continues.
  • the guide vanes primarily maintain the swirl.
  • the spacing of the guide vanes from the outer wall has the particular effect of ensuring that the absolute velocity of the swirl flow at the outer wall remains at its maximum. Due to the baffle, the dispersion is forced radially outwards from the center of the second pipe section, while the rotational motion of the dispersion caused by the pipe section is maintained.
  • the particles are forced radially outwards and, due to the rotational motion, are further accelerated towards the inner wall of the second pipe section.
  • the increased centrifugal force and/or the fluid force thus act on the radially outwardly moving particles, which is why particles still located in the fluid after the pipe section are also deposited towards the inner wall of the second pipe section.
  • the fluid After passing the baffle, the fluid is essentially only moved back into the center of the second pipe section, so that essentially only the outer areas of the dispersion still contain the particles.
  • the inner areas of the dispersion on the other hand, essentially only contain the fluid that was moved inwards after the baffle.
  • efficiency is improved.
  • the guide vanes are advantageously inclined with respect to the guiding direction.
  • the guide vanes are inclined with respect to the axis of the hollow cylindrical second pipe section and are thus arranged at an angle to it.
  • the guide vanes suitably form an external thread connected to the baffle body. Due to the inclination, the dispersion is also set into rotational motion during operation by means of the guide vanes, or at least the rotational motion of the dispersion is maintained.
  • the inclination angle of the guide vanes is equal to the helix angle of the internal thread.
  • the guide vanes have the same helix angle as the internal thread. If the helix angle of the internal thread is variable, the helix/inclination angle of the guide vanes is, in particular, equal to the helix angle of the internal thread at the transition. from the first pipe section to the second pipe section, provided the second pipe section does not have an internal thread. If the second pipe section also has an internal thread, the helix angle of the guide vanes is equal to the helix angle of the internal thread of the second pipe section.
  • the helix angle of the guide vanes is also variable and expediently changes according to the helix angle of the internal thread.
  • the helix angle of the guide vanes is expediently equal to the helix angle of the internal thread at the same position in the axial direction and/or in the guiding direction. Due to the inclination of the guide vanes, the rotational movement caused by the internal thread is thus amplified or at least maintained. Consequently, the guide vanes also serve to generate or at least maintain swirl.
  • the length of the guide vanes in the guiding direction is preferably reduced with decreasing distance to the inner wall.
  • the length of the guide vanes over which the dispersion flows decreases towards the inner wall.
  • the dispersion essentially retains the original velocity at the pipe wall that prevails when exiting the pipe section, and the dispersion continues to exhibit essentially a rotational motion corresponding to that of a solid. In this way, the separation of particles from the fluid is further improved.
  • the cross-section of the guide vanes has a trailing edge.
  • the guide vane cross-section is helical.
  • the baffle body and/or the guide vanes are made of a plastic material.
  • the baffle body and the guide vanes are formed in one piece (monolithic). For instance, between 3 or 20 guide vanes, and suitably 4 or 8 guide vanes, are attached to the baffle body. This results in a comparatively low flow resistance, while still ensuring efficient maintenance or introduction of rotational motion into the dispersion.
  • the second pipe section is widened on the side opposite the first.
  • the inner diameter of the second pipe section increases continuously, or at least from a certain point onward, the inner diameter increases continuously.
  • a step or similar feature may be present. Due to the widening, particles are moved further away from the center of the second pipe section, thus preventing them from flowing back into the center of the second pipe section after passing through the baffle. Furthermore, this simplifies particle separation. In particular, the cross-sectional area of the gap surrounding the flow body increases steadily/exponentially due to the widening. This creates flow conditions that prevent backflow/backflow of the particles. Therefore, particles contained in the secondary flow no longer enter the primary flow.
  • a hollow cylindrical third pipe section is fluidically connected upstream of the pipe section, particularly directly.
  • the third pipe section transitions seamlessly into the pipe section, and the pipe sections are advantageously integrally formed with one another, particularly as a single piece, for example, monolithically.
  • the axes of the hollow cylindrical pipe sections are parallel to each other, preferably identical.
  • the third pipe section is arranged coaxially with the pipe section, and/or the pipe section has the same inner diameter as the third pipe section.
  • the cross-section of the third pipe section is, for example, circular.
  • a further baffle is arranged in the third pipe section, particularly centrally.
  • the baffle is, for example, arranged centrally on the axis of the hollow cylindrical third pipe section and is suitably designed to be rotationally symmetrical with respect to it.
  • Guide vanes extending radially outwards are arranged on the second dam body.
  • the additional guide vanes extend at least partially radially outwards from the second dam body.
  • the guide vanes are attached to an inner wall of the third pipe section.
  • every component of the dispersion is influenced in its movement by the guide vanes, whereby the dispersion is forced radially outwards due to the baffle.
  • the additional guide vanes serve to guide the dispersion.
  • the baffle is omitted, and the additional guide vanes are integrally formed.
  • the pipe section serves to "homogenize/stabilize" the swirl flow.
  • the length of the pipe section is at least ten times its (inner) diameter.
  • the additional guide vanes are preferably inclined, at least partially, with respect to the guiding direction.
  • the additional guide vanes have an angle of inclination with the guiding direction or at least with the axis of the third pipe section.
  • the angle of inclination is, for example, constant. However, it is particularly preferred that the angle of inclination is not constant and the guide vanes are thus curved. Due to the inclination of the guide vanes, a swirling motion is introduced into the dispersion even before it enters the pipe section, i.e., a rotational motion about the axis of the third pipe section. In other words, during operation, the dispersion enters the pipe section already partially rotating.
  • any turbulence within the dispersion is reduced by means of the internal thread of the pipe section, and the motion pattern, in particular the velocity profile of the dispersion, is homogenized, so that the dispersion, upon exiting the pipe section, essentially exhibits the velocity profile of a rotating solid.
  • the velocity component in the tangential direction increases with increasing radial distance from the central axis of the pipe section, in particular linearly.
  • the helix angle of the internal thread on the side facing the third pipe section is in particular different from 0° and corresponds in particular to the inclination angle of the Guide vanes are located on the side facing the pipe section with respect to the direction of flow. As a result, the swirling flow is particularly calmed.
  • a separation chamber is preferably connected downstream of the pipe section. If a second pipe section is present, the separation chamber is connected downstream of the second pipe section, particularly directly. If a second pipe section is not present, the separation device is connected, for example, directly downstream of the pipe section.
  • the separation chamber itself has a separating tube, which is arranged, in particular, coaxially to the pipe section, preferably coaxially to the second pipe section, if present.
  • the separating tube (immersion tube) itself has, for example, a substantially round cross-section perpendicular to the flow direction.
  • the separating tube is oriented substantially parallel to the flow direction.
  • the inner diameter of the separating tube is smaller than the inner diameter of the pipe section.
  • the separating tube is surrounded circumferentially by a collection chamber.
  • the separation chamber provides a fluid cleaned of the particles as well as the particles themselves, which essentially contain only comparatively small traces of the fluid.
  • the collection chamber conveniently surrounds the separating tube, which, for example, has a relatively thin wall. This allows the purity of the fluid or the purity of the separated particles to be selected by choosing the inner diameter of the separating tube.
  • the separating tube is at least partially closed on the side opposite the pipe section by means of a cone or the like, with a circumferential slot formed, in particular, between the edge of the separating tube and the cone. During operation, the fluid exits through the slot.
  • the tip of the cone projects into the separating tube, and the cone is expediently arranged coaxially with the separating tube.
  • the cone serves, in particular, as a pressure equalizer and/or for regulating the pressure/velocity ratios. at the inlet of the separating pipe.
  • the separating pipe may be equipped with a connection for a line.
  • the inner diameter of the separating pipe may be widened on the side opposite the pipe section.
  • the inner diameter increases from the beginning of the separating pipe on the side of the pipe section in the direction of flow. As a result, the fluid velocity is reduced during operation.
  • a direct-flow cyclone separator with a hollow cylindrical pipe section for guiding a dispersion in a specific direction, wherein an inner wall of the pipe section has an internal thread, is used for separating particles from the dispersion, which comprises the particles and an incompressible fluid, such as a liquid.
  • the dispersion is a suspension.
  • the dispersion consists of the particles and the incompressible fluid, the fluid being, for example, a mixture of different liquids.
  • the fluid is, for example, water or comprises water.
  • the particles are, for example, homogeneous or, more preferably, heterogeneous and suitably have a particle size greater than 1 ⁇ m, greater than 0.1 mm, or greater than 1 mm.
  • the direct-flow cyclone separator is suitably used in an industrial plant, particularly for supplying cooling water.
  • the direct-flow cyclone separator is used in mining, particularly for supplying process water.
  • the direct current cyclone separator is used for pre-cleaning in a desalination plant, which is used in particular to desalinate seawater.
  • FIG. 1 A schematically simplified cross-sectional view of a direct current cyclone separator 4 along a longitudinal axis 2 shows a direct current cyclone separator 4.
  • the direct current cyclone separator 4 is used to filter a dispersion 6, which consists of an incompressible fluid 8 in the form of water and particles 10 in the form of sand, thus separating the particles 10 from the dispersion 6 so that the incompressible fluid 8 is essentially pure.
  • the dispersion 6 is therefore a suspension.
  • the direct current cyclone separator 4 is installed upstream of a seawater desalination plant, and the dispersion 6 is taken from the sea, so the fluid 8 is seawater.
  • the particles 10 present in the seawater would damage the desalination plant or at least reduce its efficiency. Therefore, it is necessary to remove the particles 10, i.e., the sand, as well as other solid components present in the seawater.
  • the direct current cyclone separator 4 has a hollow cylindrical pipe section 12 and a second, also hollow cylindrical, pipe section 14 downstream in the fluid flow system.
  • the second pipe section 14 is integrally formed with the pipe section 12 and arranged coaxially with it.
  • the inner diameter of the pipe section 12 is constant and equal to the inner diameter of the first pipe section 12. of the second pipe section 14 on the side facing pipe section 12.
  • the second pipe section 14 is widened, so that its inner diameter increases.
  • a separation chamber 16 is connected downstream of the second pipe section 14, and thus also downstream of the pipe section 12.
  • the separation chamber 16 has a collection chamber 18 with a guide tube 20, which is integrally formed on the second pipe section 14 on the side opposite pipe section 12.
  • the second pipe section 14 widens at a continuous distance from pipe section 12, and the guide tube 20 also widens at a further increasing distance from pipe section 12.
  • the inner diameter of the guide tube 20 on the side facing the second pipe section 14 is equal to the inner diameter of the second pipe section 14.
  • the guide tube 20 is also arranged coaxially with the second pipe section 14, i.e., with the longitudinal axis 2, so that there is a relatively flat transition between them.
  • a separating tube 22 is arranged coaxially with it, and thus also coaxially with the pipe section 12 and the second pipe section 14.
  • the inner diameter of the separating tube 22 is smaller on the sides of the pipe section 12 and the second pipe section 14 than the inner diameter of the pipe section 12, and thus also smaller than the inner diameter of the second pipe section 14.
  • the inner diameter of the separating tube 22 widens with increasing distance from the pipe section 12, the length of which the separating tube 22 is widened corresponding to the length of the guide tube 20. In other words, the separating tube 22 is widened in the region within which it is located inside the guide tube 20.
  • a circumferential gap 24 is formed between the guide tube 20 and the separating tube 22, the cross-sectional area of which increases continuously/exponentially away from the pipe section 12.
  • the length of the separating tube 22 is greater than the length of the guide tube 20, and a partition wall 26 for limiting the collection chamber 18 is attached to the guide tube 20 at a distance from the guide tube 20, in particular by being integrally formed with it.
  • the separating tube 22 is at least partially surrounded by the collection chamber 18.
  • a conically shaped pressure body 28 projects from the side opposite the pipe section 12, with its apex also being coaxial to the longitudinal axis 2.
  • a circumferential slot 30 is formed between the pressure body 28 and the separating pipe 22.
  • the hollow cylindrical pipe section 12 has an inner wall 32 that forms the radial boundary of the pipe section 32 inwards.
  • the area within the inner wall 32 is free of other components of the DC cyclone separator 4, so that during operation, the dispersion 6 can flow freely through the pipe section 12 in a direction 34 that is parallel to the longitudinal axis 2 and directed from the pipe section 12 towards the separation chamber 16.
  • the inner wall 32 has an internal thread 36 with twelve threads 38.
  • the length of the pipe section 12 in the direction 34 is, for example, 6.5 m.
  • FIG. 2 A cross-section of the pipe section 12 perpendicular to the longitudinal direction 2 is shown.
  • the threads 38 are rounded and shaped like handles or ears, resulting in a circular saw blade-shaped cross-section of the pipe section 12.
  • a helix angle 40 is formed between each of the threads 38 and the guide direction 34, with all helix angles 40 of the threads 38 being the same for every cross-section perpendicular to the longitudinal direction 2.
  • the threads 38 run at a constant tangential distance and consequently parallel to each other.
  • the helix angles 40 increase in the guide direction 34.
  • the threads 38 have an angle of 15° in the guide direction at the beginning of the pipe section 12.
  • the internal thread 36, and therefore all threads 38 have a helix angle of 45°.
  • the increase in the helix angle 40 is linear or exponential. Consequently, the course of the channels 38 is helical around the longitudinal axis 2, with the distance between the individual helical turns (helix) decreasing in the guiding direction 34 due to the increasing angle of inclination. In other words, it is a compressed helix (helix).
  • the second pipe section 14 also has an inner wall 41 with an internal thread 42, which also has twelve threads.
  • the threads 38 of the thread 36 of the pipe section 12 transition directly into the threads of the internal thread 42 of the second pipe section 14 and are aligned with them.
  • the helix angle 40 of the thread 42 of the second pipe section 14 is constant and is 45°.
  • the baffle body 44 shown in perspective, is arranged in a teardrop shape and made of a plastic. The thickened end faces the pipe section 12, and the tapered end points towards the separation chamber 16. Alternatively, the baffle body 44 has a lens-shaped contour that tapers to a point towards the separation chamber 16.
  • the baffle body 44 has a rotationally symmetrical shape with respect to its upper wing contour.
  • the rotationally symmetric baffle body 44 is arranged centrally within the second pipe section 14 and is therefore rotationally symmetrical with respect to the longitudinal axis 2.
  • the maximum radial extent of the baffle body 44 i.e., perpendicular to the longitudinal axis 2, is essentially equal to half the diameter of the pipe section 12. The maximum extent depends in particular on the flow velocity and the particles to be separated.
  • Eight radially outward-extending guide vanes 46 are attached to the dam body 44, of which only four are shown.
  • the guide vanes 46 are spaced apart from the inner wall 41 of the second pipe section 14 and inclined with respect to the guide direction 34, so that they wrap around the dam body 44 and thus form an external thread.
  • the angle of inclination of the guide vanes 46 with respect to the guide direction 34 is equal to the angle of inclination 40 of the internal thread 36 at the transition to the second thread 42 and is equal to the angle of inclination of the internal thread 42 of the second pipe section 41, and therefore equal to 45°.
  • the length of the guide vanes 46 i.e., their extension in the guide direction 34, decreases with increasing distance from the longitudinal axis 2.
  • the guide vanes 46 are also essentially teardrop-shaped in a side view.
  • the guide vanes 46 run radially in the cross-section (pipe cross-section) (lying directly on the radius).
  • the The cross-section of the guide vanes 46 exhibits a wake. That is, the guide vane cross-section follows a spiral contour.
  • the dispersion 6 is introduced into the pipe section 12 through an inlet opening 48 located on the side opposite the second pipe section 14, in the guiding direction 34.
  • the dispersion 6 essentially exhibits only a velocity component in the guiding direction 34. Due to the internal thread 36, the dispersion is set into a rotational motion about the longitudinal axis 2 in the region of the inner wall 32. This velocity component is also transmitted to regions of the dispersion 6 that are spaced away from the inner wall 32 due to the viscosity of the dispersion 6. Consequently, the velocity component of the dispersion 6 perpendicular to the guiding direction 34 is greater the further the dispersion 6 is located from the inner wall 32.
  • the magnitude of the velocity is proportional to the distance from the longitudinal axis 2, which is why the dispersion 6 exhibits a rotational motion about the longitudinal axis 2 in addition to the translational motion in the longitudinal direction 34.
  • the axis of rotation of the dispersion is the same as the longitudinal axis 2. Consequently, the dispersion 6 behaves like a solid, in which, during rotational motion, the velocity component in the tangential direction increases linearly with the distance from the axis of rotation. Due to the increasing angle of inclination 40°, the rotational speed of the dispersion 6 increases with increasing penetration into the pipe section 12. Due to the centrifugal force (volume force) caused by the rotation and the buoyant force (fluid force directed towards the inner wall 32, caused by the velocity gradient), the particles 10 are moved radially outwards.
  • the dispersion 10 Following its passage through pipe section 12, the dispersion 10 encounters the baffle 44, causing the entire dispersion to move radially outwards.
  • the internal thread 42 of the second pipe section 14 and the guide vanes 46 maintain the rotational movement of the dispersion 6.
  • the rotational movement causes only the fluid 8 to be drawn back into the baffle.
  • the particles 10 move in the direction of the longitudinal axis 2, while the particles 10 remain radially outside.
  • the particles 10 are therefore at a greater distance from the longitudinal axis 2 than the opening of the separating tube 22, which is why the particles 10 enter the gap 24 and thus the collection chamber 18. There they encounter the partition 26 and are thus prevented from moving further in the guiding direction 34.
  • the fluid 8 on the other hand, is displaced inwards towards the longitudinal axis 2 with respect to the inner wall 41 of the second tube section 14 and enters the separating tube 22. There it encounters the pressure chamber 18 and is discharged from the DC cyclone separator 4 via the slot 30.
  • the inner diameter of the separating tube 22 on the side of the second tube section 14 it is possible to adjust the purity of the fluid 8 or the particles 10.
  • FIG. 4 shows a modification of the direct current cyclone separator 4.
  • a hollow cylindrical third pipe section 50 is fluidically connected upstream of the inlet opening 48. No other modifications are present, so the pipe section 12, the second pipe section 14, the separation chamber 16, the baffle 44, and the guide vanes 46 remain unchanged.
  • the length of the pipe section 12 is shortened.
  • the third pipe section 14 has the same inner diameter as the pipe section 12 and is arranged concentrically to it.
  • the third pipe section 50 is integrally formed with the pipe section 12 and is therefore monolithic.
  • a further baffle 52 is arranged within the third pipe section 50. This baffle is cylindrical or flow-optimized and arranged concentrically to the longitudinal axis 2.
  • the further baffle 52 has a dome shape.
  • the reservoir body 52 is located in the middle of the third pipe section 50, with the further reservoir body 52 being spaced away from an inner wall 54 of the third pipe section.
  • Additional guide vanes 56 extending radially outwards are attached to the further impoundment body 52.
  • These additional guide vanes 56 extend radially and are attached to the further impoundment body 52 and the inner wall 54 of the third pipe section 50. and are integrally formed with these.
  • the additional guide vanes 56 are inclined and curved in sections with respect to the guiding direction 34, i.e., with respect to the longitudinal axis 2. Consequently, during operation, the dispersion 6 is introduced into the third pipe section 50 on the side opposite pipe section 12 and is already set into rotation with respect to the longitudinal axis 2 by means of the additional guide vanes 56.
  • the dispersion 6 is forced past the baffle 52 and the inner wall 54 of the third pipe section 50 and the additional guide vanes 56. Due to the curvature of the additional guide vanes 56, the rotational speed of the dispersion 6 increases with increasing passage in the guiding direction 34.
  • the additional baffle 52 is omitted, and the additional guide vanes 56 are connected to each other in the middle of the third pipe section 50.
  • the radially outer parts of the dispersion exhibit a reduced velocity.
  • the velocity profile of the dispersion 6 after passing the baffle 52 and the further guide vanes 56 is such that the maximum velocity of the dispersion is located essentially midway between the inner wall 54 of the third pipe section 50 and the longitudinal axis 2.
  • the dispersion 6, thus set in rotation, is guided into the pipe section 12.
  • the velocity profile is modified by means of the internal thread 36 of the pipe section 12, such that the (absolute) velocity of the dispersion 6 increases with increasing distance from the longitudinal axis 2.
  • the dispersion 6 upon exiting the pipe section 12, the dispersion 6 exhibits a velocity profile similar to that of a rotating solid.
  • the rotational speed of the dispersion 6 increases linearly with increasing distance from the longitudinal axis 2.
  • the particles 10 are separated from the incompressible fluid 8. Therefore, after passing through the second pipe section 14, the particles 10 are essentially completely discharged through the gap 24 and the fluid 8 through the slot 30 from the DC cyclone separator.
  • the swirl of the dispersion 6 is generated by means of the pipe section 12, which is designed in the manner of a swirl tube.
  • the dispersion 6 is set into a rotational motion.
  • the dispersion 6 is set into rotational motion due to a pressure impulse input resulting from the threads 38, which have a helix angle 40° with respect to the longitudinal axis 2.
  • the threads 38 are not rounded, but, for example, have a square shape.
  • the pipe section 12 has the internal thread 32, which comprises several threads 38.
  • the thread pitch, i.e., the helix angle 40° of the internal thread 36 increases continuously, for example, from 5° to 45°.
  • the internal thread 36 homogenizes the rotational motion of the dispersion 6, thereby reducing the length of the pipe section 12, i.e., its extension in the guiding direction 34.
  • the thread 36 introduces a swirl structure into the dispersion 6, corresponding to a pure rigid body rotation (solid rotation).
  • the tangential velocity profile increases linearly radially outwards, particularly from the pipe's central axis, i.e., from the longitudinal axis 2. Consequently, the maximum absolute velocity of the dispersion 6 is located essentially at the inner wall 32 of the pipe section 12 and at the inner wall 41 of the second pipe section 14.
  • the particles 10 are subjected to a centrifugal force acting point-symmetrically outwards from the pipe's central axis, i.e., the longitudinal axis 2.
  • the particles 10 are moved radially outwards, whereas the fluid 8 remains in the middle of the pipe sections 12,14 due to the reduced density and the forces acting upon it.
  • the particles 10 are also carried along by faster flow components of the dispersion 6. Since the comparatively fast flow components are offset towards the inner wall 32 of pipe section 12 and towards the inner wall 41 of the second pipe section 14, the particles 10 are moved radially outwards with relative efficiency. To improve the movement of the particles 10 from the area
  • the baffle 44 is located within the second pipe section 14 and fluidically upstream of the separation chamber 16, extending from the pipe's central axis, i.e., from the region of the longitudinal axis 2, towards the inner wall 41.
  • the baffle 44 is designed to optimize flow. This design effectively prevents separation zones and the associated turbulence in the downstream area.
  • the guide vanes 56 have the same pitch as the internal thread 36 and/or the internal thread 42 of the second pipe section 14, if present.
  • the flow length of the guide vanes 46 decreases towards the inner wall 41 of the second pipe section 14 and is advantageously comparatively small at the inner wall 41. Consequently, the swirling flow of the dispersion 6 maintains its maximum velocity in the region of the inner wall 41 of the second pipe section 14. In other words, the dispersion 6 exhibits its highest velocity in the tangential direction and/or in the guiding direction 34 in the region of the inner wall 41 of the second pipe section 14.
  • the rigid body rotation structure of the dispersion 6 is maintained even after and during passage through the second pipe section 14.
  • the particles 10 contained in the dispersion 6 are forced outwards into an area of comparatively fast flow, particularly a comparatively high velocity in the tangential direction, and are carried along by this flow. Consequently, after passing the baffle 46, the particles 10 do not return to the center of the pipe, and thus do not reach the longitudinal axis 2.
  • the separation of the particles 10 takes place by means of the separation chamber 14.
  • the geometric design of the separating tube 22, the guide tube 10, and the gap 24 formed between them is crucial for the separation efficiency, i.e., the percentage of separated particles 10, as well as for the efficiency, i.e., the ratio of the fluid 8 discharged from the direct-flow cyclone separator 4 to the volume of the dispersion 6 introduced into the direct-flow cyclone separator. Due to the internal thread 36, the rotation of the dispersion 6. Flow-mechanically optimized. Due to the baffle body 44 in conjunction with the internal thread 36, particle separation 10 is optimized.
  • the direct current cyclone separator 4 serves to separate particles 10 from a compressible or incompressible fluid 8.
  • the dispersion 6 is set into rotation by means of the pipe section 12, which is designed as a swirl tube.
  • the inner wall 32 has an internal thread 36 with multiple threads 38, which ideally have an increasing helix angle 40 in the guiding direction 34, corresponding to the flow direction of the dispersion 6.
  • the swirl structure of the dispersion 6 generated in this way resembles a pure rigid body rotation (solid body rotation) with a radially outward linearly increasing velocity profile in the tangential direction.
  • the rotating dispersion 6 After passing through the pipe section 12, the rotating dispersion 6 is guided around a baffle 44, which is positioned in the middle of the second pipe section 14 and upstream of the separation chamber 16. Due to the baffle 44, the proportion of particles 10 located in the area around the central axis of the second pipe section 14, i.e., in the area around the longitudinal axis 2, is reduced, and the particles 10 are deflected towards the inner wall 41 of the second pipe section 14.
  • the baffle 44 and the guide vanes 46 are designed for optimized flow and shaped such that the swirling flow continues to have its maximum velocity at the inner wall 41 of the second pipe section 14, which is why the particles 10 located in the dispersion 6 are forced outwards. These are separated from the fluid 8 by means of the separation chamber 16.
  • the invention relates to a direct current cyclone separator 4, also referred to as a unidirectional particle cyclone separator or axial particle cyclone separator (centrifugal separator).
  • This separator is particularly designed and suitable for separating particles 10 from a dispersion 6, wherein the dispersion 6 comprises the incompressible fluid 8 and preferably consists of the incompressible fluid 8 and the particles 10.
  • the direct current cyclone separator 4 has a pipe section 12 with an internal thread 36.
  • the pipe section 12 has a thread that is at least partially
  • the inner pipe wall has a thread-like structure, with the internal thread 36 serving to generate swirl, i.e., to impart rotational motion to the dispersion 6 in addition to translational motion along the longitudinal direction 34.
  • the thread pitch i.e., the helix angle 40 of the internal thread 36, increases along the guiding direction 34, i.e., along the flow direction.
  • the direct current cyclone separator 4 has a second pipe section 14, in the center of which the flow-optimized baffle body 44 is arranged, to which the helically shaped guide vanes 46 are attached.
  • the pitch of the helical guide vanes 46 corresponds to the largest thread pitch, i.e., the largest helix angle 40 of the internal thread 36.
  • the flow-through length of the guide vanes 46 decreases towards the inner wall 41 of the second pipe section 14.
  • the second pipe section 14 is widened on the side facing away from pipe section 12.
  • the inner diameter is increased.
  • the direct current cyclone separator 4 preferably has the separation chamber 16 with the separating tube 22, which is inserted into the guide tube 20 in the counterflow direction, i.e., opposite to the guide direction 34.
  • the pressure element 28 is inserted into the separating tube 22, with the slot 30 formed between them.
  • the downstream end of the separating tube 22 is the end of the separating tube 22 that faces away from pipe section 12.
  • the separating tube 22 is arranged coaxially with pipe section 12, the second pipe section 14, and the guide tube 20, and the inner and outer diameters of the separating tube 22 are reduced and thus narrowed in the counterflow direction, i.e., on the side of the second pipe section 14.
  • FIG. 5 A further development of the second pipe section 14 is shown in a cross-section.
  • the guide vanes 46 are essentially modified. Eight guide vanes 46 are rotationally symmetrically connected to the reservoir body 44, of which only one is shown, and which are spirally shaped.
  • the guide vanes 46 also exhibit a tangential orientation. Furthermore, the guide vanes 46 have a trail with respect to the swirl.

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  • Cyclones (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)

Claims (12)

  1. Séparateur cyclonique à co-courant (4) pour séparer des particules (10) d'une dispersion (6), en particulier une suspension, contenant les particules (10) et un fluide (8), comprenant une section de tube cylindrique creux (12) pour guider la dispersion (6) dans une direction de guidage (34),
    caractérisé en ce
    qu'une paroi intérieure (32) de la section de tube (12) présente une encoche au moyen de laquelle est formée une hélice qui s'enroule avec une inclinaison autour de la paroi intérieure (32), l'angle d'inclinaison (40) de l'hélice augmentant dans la direction de guidage (34).
  2. Séparateur cyclonique à co-courant (4) selon la revendication 1, dans lequel la section de tube (12) présente un certain nombre d'encoches, au moyen desquelles sont formées des hélices respectives dont l'angle d'inclinaison (40) augmente dans la direction de guidage (34), la distance entre les spires d'hélice individuelles correspondantes diminuant en raison de l'augmentation de l'angle d'inclinaison (40) dans la direction de guidage (34).
  3. Séparateur cyclonique à co-courant (4) selon la revendication 2,
    caractérisé en ce
    que le nombre est compris entre 2 et 100, en particulier entre 4 et 20.
  4. Séparateur cyclonique à co-courant (4) selon l'une des revendications précédentes, dans lequel la longueur de la section de tube (12) est supérieure au diamètre de la section de tube (12), supérieure au double du diamètre de la section de tube (12), supérieure au triple du diamètre de la section de tube (12) ou supérieure à 10, 20, 50, 100 ou 150 fois le diamètre de la section de tube (12).
  5. Séparateur cyclonique à co-courant (4) selon l'une des revendications précédentes,
    caractérisé en ce
    que l'angle d'inclinaison (40) est compris entre 15° et 60°.
  6. Séparateur cyclonique à co-courant (4) selon l'une des revendications précédentes,
    caractérisé en ce
    qu'une deuxième section de tube cylindrique creux (14) est montée fluidiquement en aval de la section de tube (12), un corps de retenue (44) auquel sont reliées des aubes directrices (46) s'étendant radialement vers l'extérieur étant disposé dans la deuxième section de tube (14), et les aubes directrices (46) étant espacées d'une paroi intérieure (41) de la deuxième section de tube (14).
  7. Séparateur cyclonique à co-courant (4) selon la revendication 6,
    caractérisé en ce
    que les aubes directrices (46) sont inclinées par rapport à la direction de guidage (34) et présentent le même angle d'inclinaison (40) que l'encoche.
  8. Séparateur cyclonique à co-courant (4) selon la revendication 6 ou 7,
    caractérisé en ce
    que la longueur des aubes directrices (46) dans la direction de guidage (34) diminue à mesure que la distance par rapport à la paroi intérieure (41) diminue.
  9. Séparateur cyclonique à co-courant (4) selon l'une des revendications 6 à 8,
    caractérisé en ce
    que la deuxième section de tube (14) est élargie du côté opposé à la section de tube (12).
  10. Séparateur cyclonique à co-courant (4) selon l'une des revendications précédentes,
    caractérisé en ce
    qu'une troisième section de tube cylindrique creux (50) est montée fluidiquement en amont de la section de tube (12), un autre corps de retenue (52) auquel sont reliées d'autres aubes directrices (56) s'étendant radialement vers l'extérieur étant disposé dans la troisième section de tube (56), et les autres aubes directrices (56) étant reliées à une paroi intérieure (54) de la troisième section de tube (50).
  11. Séparateur cyclonique à co-courant (4) selon la revendication 10,
    caractérisé en ce
    que les autres aubes directrices (56) sont inclinées au moins sur certaines sections par rapport à la direction de guidage (34).
  12. Séparateur cyclonique à co-courant (4) selon l'une des revendications précédentes,
    caractérisé en ce
    qu'une chambre de séparation (16) est montée fluidiquement en aval de la section de tube (12), laquelle présente un tube de séparation (22) disposé coaxialement à la section de tube (12), dont le diamètre intérieur est inférieur au diamètre intérieur de la section de tube (12) et qui est entouré sur son pourtour par une chambre de collecte (18).
EP18758550.0A 2017-08-04 2018-08-03 Cyclone dépoussiéreur à courant continu Active EP3661653B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017213608.1A DE102017213608B4 (de) 2017-08-04 2017-08-04 Gleichstromzyklonabscheider
PCT/EP2018/071193 WO2019025617A1 (fr) 2017-08-04 2018-08-03 Cyclone dépoussiéreur à courant continu

Publications (3)

Publication Number Publication Date
EP3661653A1 EP3661653A1 (fr) 2020-06-10
EP3661653B1 true EP3661653B1 (fr) 2026-02-18
EP3661653C0 EP3661653C0 (fr) 2026-02-18

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US (1) US11440028B2 (fr)
EP (1) EP3661653B1 (fr)
DE (1) DE102017213608B4 (fr)
WO (1) WO2019025617A1 (fr)

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DE102021123886A1 (de) 2021-09-06 2023-03-09 Berbel Ablufttechnik Gmbh Dunstabzugshaube mit Gleichstromzyklon
US20230117200A1 (en) * 2021-10-14 2023-04-20 Eaton Intelligent Power Limited In-line debris separtor for liquid
DE102022104631B4 (de) 2022-02-25 2024-05-23 Tayyar Yücel Bayrakci Gleichstromzyklonabscheider
DE102023123767B3 (de) 2023-09-04 2024-08-14 CyFract UG (haftungsbeschränkt) Gleichstromzyklonabscheider, Generator und Verwendung eines Gleichstromzyklonabscheiders als Generator

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FR2294489A1 (fr) 1974-12-13 1976-07-09 Thomson Csf Dispositif pour le trace programme de dessins par bombardement de particules
FR2334421A1 (fr) 1975-12-12 1977-07-08 Facet Enterprises Dispositif a ecoulement axial pour le nettoyage d'un gaz
FR2632215B1 (fr) 1988-06-02 1992-07-03 Cyclofil Pty Ltd Dispositif de separation a tube a tourbillon
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Also Published As

Publication number Publication date
US11440028B2 (en) 2022-09-13
EP3661653A1 (fr) 2020-06-10
DE102017213608B4 (de) 2020-06-18
WO2019025617A1 (fr) 2019-02-07
DE102017213608A1 (de) 2019-02-07
EP3661653C0 (fr) 2026-02-18
US20200164388A1 (en) 2020-05-28

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