EP4370744A1 - Hydrozyklone-anordnung zum zentrifugalabscheiden von feststoffen aus einer suspension - Google Patents
Hydrozyklone-anordnung zum zentrifugalabscheiden von feststoffen aus einer suspensionInfo
- Publication number
- EP4370744A1 EP4370744A1 EP22740391.2A EP22740391A EP4370744A1 EP 4370744 A1 EP4370744 A1 EP 4370744A1 EP 22740391 A EP22740391 A EP 22740391A EP 4370744 A1 EP4370744 A1 EP 4370744A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydrocyclone
- suspension
- common
- pipe
- outlet
- 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.)
- Granted
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
- B04C5/24—Multiple arrangement thereof
- B04C5/28—Multiple arrangement thereof for parallel flow
-
- 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
-
- 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
-
- 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
- B04C5/12—Construction of the overflow ducting, e.g. diffusing or spiral exits
-
- 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
- B04C5/12—Construction of the overflow ducting, e.g. diffusing or spiral exits
- B04C5/13—Construction of the overflow ducting, e.g. diffusing or spiral exits formed as a vortex finder and extending into the vortex chamber; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
- D21D5/24—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in cyclones
-
- 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
- B04C5/12—Construction of the overflow ducting, e.g. diffusing or spiral exits
- B04C5/13—Construction of the overflow ducting, e.g. diffusing or spiral exits formed as a vortex finder and extending into the vortex chamber; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow
- B04C2005/136—Baffles in the vortex finder
Definitions
- the invention relates to a hydrocyclone arrangement for centrifugally separating solids from a suspension, having at least a first hydrocyclone with a first separation chamber, a first inlet opening tangentially into the first separation chamber for feeding the suspension into the first separation chamber, a first underflow for discharging a separated heavy fraction and a first overflow pipe for discharging a depleted suspension fraction, at least one second hydrocyclone with a second separation chamber, a second inlet opening tangentially into the second separation chamber for feeding the suspension into the second separation chamber, a second underflow for discharging a separated heavy fraction and a second overflow pipe for discharging a depleted suspension fraction, and a common outlet for the depleted suspension fractions of both the at least one first hydrocyclone and the at least one second hydro cyclone.
- WO 2018/091173 A1 describes a hydrocyclone arrangement for cleaning a fibrous suspension with a plurality of hydrocyclone chambers with a circular cross-section, in each of which an inlet and a light-parts outlet and at the opposite end a heavy-parts separator open, with the inlets having a common Inlet chamber are connected to a common inlet and the light parts outlets are connected to a common light parts outlet via separate outlet lines leading through the common inlet chamber.
- DE 19963 284 A1 describes an arrangement for controlling the operation of a hydrocyclone or a
- Hydrocyclone arrangement in which the shape of the discharge jet in the underflow of at least one hydrocyclone is detected using a probe and the probe signal is fed to the control valve in the overflow line of the hydrocyclone or the overflow collection line of a hydrocyclone battery for adjusting the volume split.
- the respective overflow of each hydrocyclone is connected via a flexible hose as an overflow line to a common collection chamber, which is designed separately from the hydrocyclones.
- the object of the invention is to create a hydrocyclone arrangement for centrifugally separating solids from a suspension, which has an improved separating effect.
- hydrocyclone arrangement for the centrifugal separation of solids from a suspension having:
- At least one second hydrocyclone with a second separation chamber At least one second hydrocyclone with a second separation chamber, a second inlet opening tangentially into the second separation chamber for feeding the suspension into the second separation chamber, a second underflow for discharging a separated heavy fraction and a second overflow pipe for discharging a depleted suspension fraction, and
- a common outlet for the depleted suspension fractions of both the at least one first hydrocyclone and the at least one second hydrocyclone the common outlet being arranged within a common inlet housing of the hydrocyclone arrangement and the first overflow pipe and the second overflow pipe each having one within the Inlet housing arranged deflection device is assigned, which is designed to deflect the depleted suspension fraction exiting in the axial direction in a direction with a radial directional component, so that the depleted suspension fractions are each introduced with these radial directional components in the common outlet.
- Hydrocyclones as such are designed to separate at least one heavy fraction from a suspension.
- the suspension comprises a carrier liquid, such as water, in which solid particles are dispersed.
- a heavy fraction can be separated at an underflow of the hydrocyclone.
- the residual suspension from which the heavy fraction has been separated can be referred to as the depleted suspension fraction.
- the depleted suspension fraction comprises the carrier liquid and any solid particles that have remained after the heavy fraction has been separated off.
- the depleted suspension fraction can contain remaining solid particles or be free of solid particles.
- the depleted suspension fraction in a first mode of operation of the hydrocyclones, can form an accept.
- the accept is that fraction which is to be used as a product or intermediate product.
- the separated heavy fraction then forms a heavy part reject.
- the heavy part reject can be discarded or subjected to a further process.
- the heavy fraction when hydrocyclones are used in papermaking, can include, for example, sand particles, glass splinters or metal parts that are to be sorted out.
- the solid particles forming the accept in the remaining depleted suspension fraction can include the desired fibrous particles, which can be used for the paper production mentioned by way of example.
- the depleted suspension fraction freed from the heavy fraction can therefore form an accept.
- the separated heavy fraction can form the accept.
- the accept is that fraction which is to be used as a product or intermediate product.
- the depleted suspension fraction then forms a so-called light part reject.
- the light part reject can be discarded with regard to the separated heavy fraction representing the accept or can be subjected to a further process.
- hydrocyclones are used in papermaking, it may be desirable to separate off very fine particles which have smaller particle sizes than the particle size distribution useful for papermaking.
- the heavy traction separated from the suspension feedstock stream can therefore form an accept.
- an additional light fraction can optionally also be separated from the suspension fraction depleted of heavy traction.
- the additional light fraction can be discharged via an optional discharge pipe on the hydrocyclone, separately from the suspension fraction depleted of heavy traction and light fraction. Further solid particles can remain in the remaining depleted suspension fraction. These other solid particles contained in the remaining depleted suspension fraction can also form an accept.
- heavy traction can be any suitable centrifugal separation chamber on the hydrocyclone.
- Form heavy part reject and the light fraction can also form a light part reject in this context.
- the heavy traction can include sand particles, glass splinters or metal parts that have to be sorted out
- the light fraction can include plastic particles, in particular foamed polystyrene particles, that have to be sorted out.
- the solid particles forming the accept in the remaining depleted suspension fraction can include the desired fibrous particles, which can be used for the paper production mentioned by way of example.
- the discharge element of the heavy traction is generally referred to as the underflow and the discharge element of the remaining depleted suspension fraction, ie the residual suspension containing the accept, is generally referred to as the upper flow.
- the suspension introduced via the inlet into the hydrocyclone is brought into a turbulent flow, so that the heavy traction accumulates near the wall of the separating chamber and can be discharged from there.
- the separating chamber usually has a conical shape that tapers in the direction of the underflow, i.e. at least the inner wall of the separating chamber is conical.
- designs with circular-cylindrical separating chamber walls are also possible.
- the hydrocyclone arrangement comprises at least two hydrocyclones, ie at least one first hydrocyclone and at least one second hydrocyclone.
- the hydrocyclone arrangement can have any number of individual hydrocyclones.
- hydrocyclone arrangements with, for example, three individual hydrocyclones or four individual hydrocyclones are expedient.
- a common outlet is used, in which the individual depleted suspension fractions of the individual hydrocyclones are combined to form a common stream of accepts.
- the common exit for the merged flow of accepted material from the hydrocyclone arrangement can be designed in particular as an exit chamber to which the overflow pipes of the individual hydrocyclones are fluidically connected are.
- the several depleted suspension fractions are combined to form the common accept stream and are conducted away from the hydrocyclone arrangement, for example, via an outlet pipe connection which is fluidically connected to the outlet chamber.
- a common inlet housing can also be used, to which a common inlet nozzle is connected in terms of flow, via which a feed suspension, i.e. the starting suspension from which the heavy fraction and possibly also the light fraction are separated, can be used is to be fed to the hydrocyclone arrangement.
- a feed suspension i.e. the starting suspension from which the heavy fraction and possibly also the light fraction are separated.
- the inlets of the individual hydrocyclones then lead away from the common inlet housing, so that the
- Task suspension flow is distributed as evenly as possible to all hydrocyclones.
- first overflow pipe and the second overflow pipe are each assigned a deflection device which is arranged within the common inlet housing of the hydrocyclone arrangement and is designed to deflect the depleted suspension fraction exiting in the axial direction in a direction with a radial directional component, so that the depleted suspension -Fractions are each introduced with these radial directional components into the common outlet
- a compact hydrocyclone arrangement can be created which has an improved separation effect.
- the respective overflow pipe of each hydrocyclone is fluidically connected to a respective immersion pipe of the hydrocyclone. That Each overflow pipe can be designed in one piece with the respective immersion pipe or form the immersion pipe, or be designed as a separate line part.
- An assembly comprising at least the first and second overflow pipes and the common outlet or the common outlet chamber can be made from one or more molded parts, in particular two molded parts.
- the common outlet is arranged within the common inlet housing of the hydrocyclone arrangement, and the first overflow pipe of the at least one first hydrocyclone and the second overflow pipe of the at least one second hydrocyclone are each assigned a deflection device arranged within the inlet housing, which is designed to exit in the axial direction to deflect each depleted suspension fraction in a direction with a radial directional component, so that the depleted suspension fractions are each introduced with these radial directional components into the common outlet.
- the common entry housing may include an entry channel surrounding a peripheral wall of the common exit. To this extent, a section of the peripheral wall of the common outlet can form part of the interior channel wall of the inlet channel of the common inlet housing.
- the common feed material can be fed to the hydrocyclone arrangement via the inlet housing, in particular with a tangential directional component, and divided between the first inlet of the at least one first hydrocyclone and the second inlet of the at least one second hydrocyclone and all the hydrocyclones present in the hydrocyclone arrangement 1 are supplied.
- the supplied feed material flow or the divided feed material flows can flow past the deflection devices or between two adjacent deflection devices, ie through gaps between two adjacent outlet pipe sockets.
- the deflection devices can be designed in particular as rigid pipe bends.
- the rigid tube bends can be connected directly to the (rigid) immersion tubes of the hydrocyclones and, in particular, can be designed in one piece with them.
- the rigid tube bends can also be connected directly to a (rigid) casing wall of the common outlet, in particular can be designed in one piece with it.
- the inner diameter Dl of the outlet pipe socket, via which the depleted suspension fractions of the at least one first hydrocyclone and of the at least one second hydrocyclone leave the outlet together via the overflow pipes, is smaller than the diameter of the common circumferential circle of the multiple hydrocyclones.
- the common outlet pipe socket transports the combined, depleted total suspension fraction of the at least one first hydrocyclone and of the at least one second hydrocyclone together centrally, ie centrally out of the housing of the common outlet in the vertical direction.
- the common outlet pipe socket can be led away vertically upwards, ie it can be arranged leading out of the hydrocyclone arrangement upwards.
- the common outlet pipe socket can be positioned vertically downwards be led away, ie be arranged leading out from the hydrocyclone assembly downwards.
- the first and second overflow pipes can be introduced into the common outlet laterally, i.e. on an outer casing wall of the common outlet.
- the circumference of the common outlet, in particular the common outlet chamber can be made significantly smaller than is possible in the prior art if straight overflow pipes are connected directly in a vertical or axial direction to an underside of the common outlet, in particular the common outlet chamber are, as is the case, for example, in WO2018/091173 A1 mentioned at the outset.
- a significantly smaller design of the common outlet, in particular the common outlet chamber means that a flow cross-section change at the transition from each overflow pipe to the common outlet or to the common outlet chamber can be made less abrupt or even completely avoided, resulting in a sudden pressure change in the flow of the depleted suspension fraction to be discharged can be reduced or even prevented entirely.
- first overflow pipe and the second overflow pipe are each assigned a deflection device which is designed to deflect the depleted suspension fraction exiting in the axial direction in a direction with a radial directional component, so that the depleted Suspension fractions are each introduced with these radial directional components in the common outlet.
- abrupt jumps in the flow cross section can at least be reduced or even completely avoided.
- the individual depleted suspension fractions of all hydrocyclones can be diverted via the first and second overflow pipes as long as the individual depleted suspension fractions are still guided separately and before they are brought together in the centrally arranged outlet or in the centrally arranged outlet chamber of the hydrocyclone arrangement will.
- the deflection devices can be designed to deflect the depleted suspension fraction guided in an axially extending dip pipe section of the respective overflow pipe by at least 30 degrees, in particular by at least 45 degrees, from the axial direction.
- Each first overflow pipe and each second overflow pipe can be assigned a separate deflection device, so that each depleted suspension fraction can be deflected individually, i.e. separately or independently of one another.
- the deflection devices can be designed to deflect the depleted suspension fraction guided in an axially extending dip pipe section of the respective overflow pipe by at least 65 degrees, in particular by 90 degrees from the axial direction, i.e. the suspension fraction is preferably between 65 degrees and 90 degrees deflected, in particular deflected by exactly 90 degrees.
- the deflection devices can each be formed by a pipe bend that connects the respective axially extending immersion pipe section of the respective hydrocyclone to the common outlet.
- the overflow pipes of all hydrocyclones can be easily connected to the outlet or the outlet chamber.
- the size, in particular the outer diameter of the outlet or the outlet chamber, can be freely selected since it is not dependent on the position, size and arrangement of the individual hydrocyclones.
- the flow cross-sections in the outlet or in the outlet chamber can be selected in such a way that no sudden changes in flow cross-section and thus no sudden changes in flow speed occur.
- the outlet or the outlet chamber can have a constant flow cross section.
- a flow cross section, in particular the narrowest flow cross section of the outlet or the outlet chamber can correspond to the sum of all individual flow cross sections of the individual overflow pipes of the several hydrocyclones or the immersion pipes of the several hydrocyclones.
- the flow vortices in the individual dip tubes of the hydrocyclones can also continue in the respectively associated individual tube bends, so that fewer negative repercussions occur in the separating chambers.
- the individual tube bends can have the same flow cross section as the individual dip tubes of the hydrocyclones.
- An average radius of curvature on the respective pipe bend can correspond to one to three times the average radius of the immersion pipe section of the respective hydrocyclone.
- the outside radius of curvature of the respective pipe bend can essentially correspond to the radius of the immersion pipe section of the respective hydrocyclone.
- the average radius of curvature of the respective pipe bend in Substantially correspond to the radius of the dip tube section of the respective hydrocyclone.
- the outside radius of curvature of the respective pipe bend is larger than the radius of the dip pipe section of the respective hydrocyclone.
- the inside radius of curvature of the respective pipe bend can essentially correspond to the radius of the immersion pipe section of the respective hydrocyclone. In this case, both the outside radius of curvature and the mean radius of curvature of the respective pipe bend are greater than the radius of the dip pipe section of the respective hydrocyclone.
- the respective pipe bend can be followed in the direction of flow by a straight piece of pipe which fluidically connects the respective pipe bend to the common outlet.
- the respective straight pipe sections can be arranged at an angle of less than 90 degrees, in particular at an angle between 45 degrees and 20 degrees, for example 25 degrees, to the horizontal cross-sectional plane of the hydrocyclone arrangement or the hydrocyclones.
- the position of the horizontal cross-sectional plane means a position of the plane perpendicular to the axial extent of the hydrocyclones.
- the axial extent of the hydrocyclones results from the axis of rotation of the separating vortex flow of the respective hydrocyclone.
- the hydrocyclone arrangement can have a common inlet housing for the at least one first hydrocyclone and the at least one second hydrocyclone, to which the at least one first inlet and the at least one second enema are connected, the
- Deflection devices are arranged within the outer contour of the common inlet housing.
- the common outlet or the common outlet chamber can be made significantly smaller, with the result that more space is available within the common
- the hydrocyclone arrangement can comprise at least three hydrocyclones, the cyclone axes of which are arranged parallel to one another and lie on a common circumferential circle of the hydrocyclone arrangement and the common outlet is arranged in the center of the circumferential circle between the at least three hydrocyclones.
- the common outlet can comprise an outlet pipe socket, which is designed to discharge the depleted suspension fractions combined in the common outlet from the common outlet to the outside of the hydrocyclone arrangement, the inner diameter of the outlet pipe socket being smaller than the diameter of the common circumferential circle of the at least three hydrocyclones.
- the outlet no longer has to extend completely over all the overflow pipes of the hydrocyclones, but can be designed to be significantly smaller in scope. To this extent, the deflection devices can bridge any distances between the overflow pipes and the outlet. The smallest cross-sectional area of flow
- Outlet pipe socket can be smaller or at most equal to the sum of the flow cross-sectional areas of the overflow pipes of all hydrocyclones of the hydrocyclone arrangement. As a result, there is no expansion of the flow cross section in the flow path and therefore no pressure loss occurs.
- the deflection devices can be designed to deflect the depleted suspension fractions guided in the respective overflow pipes in one direction with a tangential directional component, so that the depleted suspension fractions are introduced into the common outlet with a tangential directional component.
- the energy from the flow vortices in the overflow pipes can be converted into a common vortex flow by tangential feed into the common outlet or in the common outlet chamber, which avoids through-losses and improves the separating effect of the hydrocyclones can further improve.
- the deflection devices can be designed to introduce the depleted suspension fractions into the common outlet with a tangential directional component, in which case the resulting rotary flow momentum of the total flow within the common outlet has the same direction as the individual rotary flow momentums in the individual hydrocyclones.
- a rotating flow can be generated in the outlet chamber.
- Such a rotating flow in the outlet chamber can then optionally form an additional centrifugal separation chamber, from which, for example, an undersize can be separated as a light fraction from the combined, depleted suspension fraction.
- Such a device is also referred to as a lightweight parts cleaner.
- the deflection devices can include baffles, which are arranged in the common outlet and which deflect the depleted suspension fractions guided in the respective overflow pipes within the common outlet in a direction with a tangential directional component, so that the depleted suspension entering the common outlet -Fractions are each redirected into a tangential directional component.
- the baffles can be used to generate a differently generated or possibly a supporting, in particular intensified, turbulent flow or rotational flow in the outlet, in particular in an outlet chamber.
- the exit can be optional as another
- Centrifugal separation space may be formed, in the center of which dips a coaxially arranged discharge pipe, which is formed for discharging a light fraction separated from the combined, depleted suspension fraction. In this way, an additional light part separation can be realized in a compact design. Through the special An additional, separate centrifugal separator can be omitted if the outlet chamber is formed.
- the discharge pipe can be led away downwards from the centrifugal separating chamber on a separating chamber side facing the separating chambers of the hydrocyclones. This enables a space-saving line routing for the removal of the separated light fraction from the hydrocyclone arrangement.
- FIG. 1 shows a sectional view of a specific embodiment of a hydrocyclone arrangement according to the invention
- FIG. 2 shows a partially sectioned perspective representation of the hydrocyclone arrangement according to FIG. 1 in a view obliquely from above
- FIG. 3 shows a schematic representation of a cross section through a first variant of a hydrocyclone arrangement with a common outlet and four
- FIG. 4 shows a schematic representation of a cross section through a second variant of a hydrocyclone arrangement with a common outlet and four hydrocyclones, which are connected by means of four tangentially aligned deflection devices,
- FIG. 5 shows a schematic representation of a cross section through a third variant of a hydrocyclone arrangement with a common outlet and three hydrocyclones which are connected by means of three radially aligned deflection devices, and
- Fig. 6 is a schematic representation in the
- the hydrocyclone arrangement 1 shows a hydrocyclone arrangement 1 for centrifugally separating solids from a suspension.
- the hydrocyclone arrangement 1 has at least one first hydrocyclone 2.1, with a first separation chamber 3.1, a first inlet 4.1 opening tangentially into the first separation chamber 3.1 for supplying the Suspension in the first separation chamber 3.1, a first underflow 5.1 for discharging a separated heavy fraction and a first overflow pipe 6.1 for discharging a depleted suspension fraction.
- the hydrocyclone arrangement 1 also has at least one second hydrocyclone 2.2, with a second separation chamber 3.2, a second inlet 4.2 opening tangentially into the second separation chamber 3.2 for feeding the suspension into the second separation chamber 3.2, a second underflow 5.2 for discharging a separated heavy fraction and a second overflow pipe 6.2 for discharging a depleted suspension fraction.
- the hydrocyclone arrangement 1 includes a common outlet 7 for the depleted suspension fractions of both the at least one first hydrocyclone 2.1 and the at least one second hydrocyclone 2.2.
- the first overflow pipe 6.1 and the second overflow pipe 6.2 are each assigned a deflection device 8.1, 8.2, which is designed to deflect the depleted suspension fraction exiting in the axial direction in a direction with a radial directional component, so that the depleted suspension fractions each these radial directional components are introduced into the common outlet 7 .
- the deflection devices 8.1, 8.2 are designed to deflect the depleted suspension fraction guided in an axially extending dip pipe section 9.1, 9.2 of the respective overflow pipe 6.1, 6.2 by 90 degrees from the axial direction. As shown in Fig. 1, the depleted suspension fractions accordingly deflected from their vertical flow directions in radial, ie horizontal flow directions.
- the deflection devices 8.1, 8.2 are each formed by a pipe bend that connects the respective axially extending immersion pipe section 9.1, 9.2 of the respective hydrocyclone 2.1, 2.2 to the common outlet 7.
- the hydrocyclone arrangement 1 for the at least one first hydrocyclone 2.1 and the at least one second hydrocyclone 2.2 has a common inlet housing 10 to which the at least one first inlet 4.1 and the at least a second inlet 4.2 are connected.
- Deflection devices 8.1, 8.2 are arranged within the outer contour of the common inlet housing 10.
- the common outlet 7 is arranged inside the common inlet housing 10 of the hydrocyclone arrangement 1, and the first overflow pipe 6.1 of the at least one first hydrocyclone 2.1 and the second overflow pipe 6.2 of the at least one second hydrocyclone 2.2 each have a deflection device 8.1, 8.2 arranged inside the inlet housing 10 assigned, which is designed to deflect the respective depleted suspension fraction exiting in the axial direction in a direction with a radial directional component, so that the depleted suspension fractions are each introduced into the common outlet 7 with these radial directional components.
- the common inlet housing 10 has an inlet channel which surrounds a peripheral wall of the common outlet 7 .
- a partial section of the peripheral wall of the common outlet 7 can in this respect form part of the inner channel wall of the inlet channel of the common inlet housing 10 .
- the common feed material is fed to the hydrocyclone arrangement 1 via the inlet housing 10, in particular with a tangential directional component, and divided between the first inlet 4.1 of the at least one first hydrocyclone 2.1 and the second inlet 4.2 of the at least one second hydrocyclone 2.2 and all the hydrocyclones present 2.1, 2.2 of the hydrocyclone arrangement 1 supplied.
- the supplied feed material flow or the divided feed material flows flow past the deflection devices 8.1, 8.2 or between two adjacent deflection devices 8.1, 8.2, ie through gaps between two adjacent outlet pipe sockets 7a.
- the deflection devices 8.1, 8.2 can in particular be designed as rigid pipe bends.
- the rigid tube bends can be connected directly to the (rigid) immersion tubes of the hydrocyclones 2.1 and 2.2, in particular can be designed in one piece with them.
- the rigid pipe bends can also be connected directly to a (rigid) casing wall of the common outlet 7, in particular can be designed in one piece with it.
- the inner diameter Dl of the outlet pipe socket 7a via which the depleted suspension fractions of the at least one first hydrocyclone 2.1 and the at least one second hydrocyclone 2.2 via the overflow pipes 6.1, 6.2 leave the outlet 7 together, smaller than the diameter D2 of the common circumference U of the several hydrocyclones 2.1 and 2.2.
- the common outlet pipe socket 7a transports the combined depleted total suspension fraction of the at least one first hydrocyclone 2.1 and the at least one second hydrocyclone 2.2 together centrally, i.e. centrally out of the housing of the common outlet 7 in the vertical direction.
- the common outlet pipe socket 7a can be led away vertically upwards, i.e. it can be arranged leading out of the hydrocyclone arrangement 1 upwards.
- the common outlet pipe socket 7a can be led away vertically downwards, i.e. arranged leading out of the hydrocyclone arrangement 1 downwards.
- a common inlet nozzle 10a is fluidically connected to the common inlet housing 10, as is shown in particular in Fig. 2, via which a feed suspension, i.e. the starting suspension from which the heavy fraction and possibly also the light fraction is to be separated, is fed to the hydrocyclone arrangement 1 is supplied.
- the inlets 4.1, 4.2 of the individual hydrocyclones 2.1, 2.2 then lead away from the common inlet housing 10, so that the feed suspension flow is distributed as evenly as possible to all hydrocyclones 2.1, 2.2.
- the common outlet 7 includes an outlet pipe socket 7a, which is designed to discharge the combined in the common outlet 7 depleted suspension fractions from the common outlet 7 to the outside of the hydrocyclone assembly 1, wherein the inner diameter Dl of the Outlet pipe socket 7a is smaller than the diameter D2 of the common circumferential circle U of the hydrocyclones 2.1, 2.2.
- the smallest flow cross-sectional area of the outlet pipe socket 7a can in particular be smaller or at most equal to the sum of the flow cross-sectional areas of the overflow pipes 6.1, 6.2 of all hydrocyclones 2.1, 2.2 of the hydrocyclone arrangement 1.
- the deflection devices 8.1, 8.2 can be designed to deflect the depleted suspension fractions guided in the respective overflow pipes 6.1, 6.2 in one direction with a tangential directional component, so that the depleted Suspension fractions are each introduced into the common outlet 7 with a tangential directional component.
- the deflection devices 8.1, 8.2 can be designed to introduce the depleted suspension fractions into the common outlet 7, each with a tangential directional component, in which the resulting rotary flow momentum of the total flow within the common outlet 7 has the same direction as the individual rotary flow momentums in the individual hydrocyclones 2.1, 2.2.
- the hydrocyclone arrangement 1 has a total of four hydrocyclones, i.e. two first hydrocyclones 2.1 and two second hydrocyclones 2.2 each, whose cyclone axes A, which are arranged parallel to one another, lie on a common circumferential circle U of the hydrocyclone arrangement 1, the common Outlet 7 is arranged in the center Z of the circumference U between the four hydrocyclones 2.1, 2.2, like this shown in particular in FIGS. 3 and 4 .
- outlet 7 is designed as a further centrifugal separation chamber 12, in the center of which a coaxially arranged discharge pipe 11 dips, which is designed to discharge a light fraction separated from the combined, depleted suspension fraction.
- discharge pipe 11 is on a separation chamber side facing downwards from the separation chambers 3.1, 3.2 of the hydrocyclones 2.1, 2.2
- Centrifugal separation room 12 carried away.
- the discharge pipe for a light fraction could also be attached to the upper end of the separation space.
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- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cyclones (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021117902.5A DE102021117902A1 (de) | 2021-07-12 | 2021-07-12 | Hydrozyklone-Anordnung zum Zentrifugalabscheiden von Feststoffen aus einer Suspension |
| PCT/EP2022/068661 WO2023285217A1 (de) | 2021-07-12 | 2022-07-06 | Hydrozyklone-anordnung zum zentrifugalabscheiden von feststoffen aus einer suspension |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4370744A1 true EP4370744A1 (de) | 2024-05-22 |
| EP4370744B1 EP4370744B1 (de) | 2025-03-12 |
Family
ID=82483151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22740391.2A Active EP4370744B1 (de) | 2021-07-12 | 2022-07-06 | Hydrozyklone-anordnung zum zentrifugalabscheiden von feststoffen aus einer suspension |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4370744B1 (de) |
| CN (1) | CN117642538A (de) |
| DE (1) | DE102021117902A1 (de) |
| FI (1) | FI4370744T3 (de) |
| WO (1) | WO2023285217A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024101967A1 (de) * | 2024-01-24 | 2025-04-10 | Voith Patent Gmbh | Hydrozyklon für eine Reinigung einer Faserstoffsuspension |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2147549A1 (de) * | 1971-09-23 | 1973-03-29 | Kloeckner Humboldt Deutz Ag | Sichter fuer feinkoerniges gut |
| DE2943298A1 (de) * | 1979-10-26 | 1981-04-30 | J.M. Voith Gmbh, 7920 Heidenheim | Wirbelabscheider |
| GB8527215D0 (en) | 1985-11-05 | 1985-12-11 | Shell Int Research | Solids-fluid separation |
| DE3800849A1 (de) * | 1988-01-14 | 1989-07-27 | Akw Apparate Verfahren | Einrichtung zur verteilung des zuflusses der suspension in die zulaeufe einer anzahl von hydrozyklonen |
| DE4342289A1 (de) * | 1993-12-11 | 1995-06-14 | Hans Joachim Dr Ing Schultz | Verfahren und Vorrichtung zum kontinuierlichen Trennen von in einer Stoffsuspension enthaltenen erwünschten von unerwünschten Stoffen |
| DE19963284A1 (de) | 1998-10-29 | 2001-06-28 | Akw App Und Verfahren Gmbh & C | Hydrozyklonanordnung |
| SE535059C2 (sv) * | 2009-09-22 | 2012-03-27 | Skellefteaa Kraftaktiebolag | Torkningsapparat innefattande ett separationssteg med parallellkopplade cykloner samt förfarande och användande |
| CN104128269A (zh) * | 2014-07-11 | 2014-11-05 | 中国石油大学(北京) | 一种切流式并联旋分器 |
| CN204746643U (zh) * | 2015-06-25 | 2015-11-11 | 王博 | 双层旋风分离器旋转并联除尘装置 |
| DE102016122225B4 (de) * | 2016-11-18 | 2018-11-08 | Voith Patent Gmbh | Hydrozyklonanordnung |
| CN210700674U (zh) * | 2019-06-24 | 2020-06-09 | 中国石油天然气股份有限公司 | 旋风分离设备及甲醇制烯烃的装置 |
-
2021
- 2021-07-12 DE DE102021117902.5A patent/DE102021117902A1/de active Pending
-
2022
- 2022-07-06 FI FIEP22740391.2T patent/FI4370744T3/fi active
- 2022-07-06 CN CN202280048923.7A patent/CN117642538A/zh active Pending
- 2022-07-06 WO PCT/EP2022/068661 patent/WO2023285217A1/de not_active Ceased
- 2022-07-06 EP EP22740391.2A patent/EP4370744B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP4370744B1 (de) | 2025-03-12 |
| WO2023285217A1 (de) | 2023-01-19 |
| CN117642538A (zh) | 2024-03-01 |
| DE102021117902A1 (de) | 2023-01-12 |
| FI4370744T3 (fi) | 2025-05-21 |
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