EP4370743A1 - Hydrozyklone-anordnung zum zentrifugalabscheiden von feststoffen aus einer suspension - Google Patents
Hydrozyklone-anordnung zum zentrifugalabscheiden von feststoffen aus einer suspensionInfo
- Publication number
- EP4370743A1 EP4370743A1 EP22733086.7A EP22733086A EP4370743A1 EP 4370743 A1 EP4370743 A1 EP 4370743A1 EP 22733086 A EP22733086 A EP 22733086A EP 4370743 A1 EP4370743 A1 EP 4370743A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- suspension
- flow
- hydrocyclone
- inlet
- 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.)
- Pending
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
- B04C5/12—Construction of the overflow ducting, e.g. diffusing or spiral exits
-
- 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
Definitions
- the invention relates to a hydrocyclone arrangement for centrifugally separating solids from a suspension, having at least one first hydrocyclone with a first separation chamber, a first inlet opening tangentially into the first separation chamber for feeding a first suspension portion of a suspension feed material flow into the first separating 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 separating chamber, a second inlet opening tangentially into the second separating chamber for supplying a second suspension portion of the suspension -Feed material flow 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, as well as a common inlet chamber with an inlet for the Introducing the suspension feed stream into the common inlet chamber and one of the number of first and second hydrocyclones corresponds to the number of outlets for discharging respective suspension portions from the common in
- WO 2018/091173 A1 describes a hydrocyclone arrangement for cleaning a fibrous suspension with a plurality of hydrocyclone chambers with a circular cross-section, each with an inlet and a light-parts outlet at one end and a heavy-parts separator at the opposite end, where the inlets are connected to a common inlet via a common inlet chamber and the light-weight parts outlets are connected to a common lightweight parts outlet via separate outlet lines leading through the common inlet chamber.
- US Pat. No. 3,543,931 describes a cyclone arrangement with several cyclones, which are supplied with a fluid suspension via a common feed chamber. In each case several cyclones are arranged linearly next to one another in two parallel rows, with the inlet chamber having two parallel, straight inlet channels, the ceiling heights of which are continuously reduced.
- the part rich in heavy impurities is drawn off laterally and outwards, preferably tangentially to the cylindrical chamber wall, using the centrifugal force developed by the vortex movement.
- the object of the invention is to provide a hydrocyclone arrangement for centrifugally separating solids from a suspension, which can be operated with a high level of reliability and is compact in design. In addition, if appropriate, an improved release effect is also sought.
- hydrocyclone arrangement for the centrifugal separation of solids from a suspension having:
- a common inlet chamber with an inlet for introducing the suspension feedstock flow into the common inlet chamber and a number of the number of first and second hydrocyclones corresponding to the number of runs for discharging respective suspension components from the common inlet chamber into the first and second inlets of the first and second hydrocyclones
- the common inlet chamber being formed as an annular chamber to which the inlet is connected to form an annular flow
- the inlet chamber (10) above the hydrocyclones (2.1 , 2.2) is arranged and the radial extent is smaller than the common radial extent of the hydrocyclones (2.1, 2.2).
- the inlet can be connected eccentrically to form a ring flow.
- An eccentric arrangement or alignment of the inlet means that the suspension feedstock flow flowing into the annular chamber via the inlet does not flow radially towards the center, but flows in off-center, in particular flows away from the center.
- the inlet can be connected to the inlet chamber in a tangential orientation in order to form an annular flow.
- the suspension feedstock flow flowing into the annular chamber can flow in tangentially.
- 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 accordingly includes the carrier liquid and any remaining solid particles after the Heavy fraction has been separated.
- 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 using hydrocyclones in papermaking, can include, for example, sand particles, glass splinters or metal parts 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 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 be subjected to a further process.
- the discharge element for the heavy fraction is generally referred to as the underflow and the discharge element for the remaining depleted suspension fraction, i.e. 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 fraction 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 lower flow, i.e. at least the inner wall of the separating chamber is conical.
- versions with circular-cylindrical separating chamber walls are also possible, please include.
- 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.
- a ring-shaped arrangement enables a particularly compact design.
- special hydrocyclone arrangements with, for example, three individual hydrocyclones or four individual annularly arranged hydrocyclones are appropriate.
- a common inlet and possibly also a common outlet are used, in which the individual depleted suspension fractions of the individual hydrocyclones are combined into one Acceptance flow are brought together.
- the common exit for the merged flow of accepts from the hydrocyclone arrangement can be in the form of an exit chamber, to which the overflow pipes of the individual hydrocyclones are fluidically connected.
- the several depleted suspension fractions are combined to form the common accept flow 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 outlet can be arranged radially centrally between the hydrocyclones.
- the common outlet or the outlet chamber is arranged radially inside the inlet chamber.
- the inlet chamber and the outlet chamber are preferably arranged at least partially axially overlapping above the hydrocyclones.
- the inlet chamber is arranged over an axial section radially outside the outlet chamber coa xial surrounding.
- a common inlet chamber can also be used, to which a common inlet, for example an inlet pipe socket, is fluidically connected, via which a suspension feed material flow, ie the starting suspension from which the heavy fraction and, if necessary, also an undesired light fraction is to be separated off, which is fed to the hydrocyclone arrangement.
- a suspension feed material flow ie the starting suspension from which the heavy fraction and, if necessary, also an undesired light fraction is to be separated off, which is fed to the hydrocyclone arrangement.
- drains such as drain pipe sockets, then lead away from the common inlet chamber, which flow into the inlets of the individual hydrocyclones, so that the The feed suspension flow is divided as evenly as possible into individual suspension parts and distributed or diverted to all hydrocyclones.
- the common inlet chamber as an annular chamber, to which the inlet for forming an annular flow is connected, in particular eccentrically or in a tangential alignment, a hydrocyclone arrangement for centrifugally separating solids from a suspension is created that is highly reliable can be operated and, in addition, may also have an improved separation effect.
- the suspension feed material flow By supplying the suspension feed material flow to form an annular flow, in particular eccentrically or in a tangential direction in an annular chamber, the suspension feed material flow is guided into a defined annular channel flow, which is fed in succession to all inlets of all hydrocyclones of the hydrocyclone arrangement. This prevents the suspension feed material flow from entering a large cavity in an uncontrolled or undefined manner in terms of flow technology, as is known from the prior art.
- the common inlet chamber is designed as an annular chamber, to which the inlet is connected in a tangential direction, sudden flow cross-sectional expansions and thus high pressure losses can be prevented or at least significantly reduced, local turbulence prevented and/or dead spaces largely or completely avoided .
- the risk of deposits and agglomerations in the hydrocyclone arrangement is reduced and consequently disturbances and malfunctions in the hydrocyclone arrangement are less likely.
- This increases operational reliability.
- the desired separation effect can be improved.
- the suspension feed stream can have solid particles that have a shape that differs significantly from the spherical shape, such as rods or threads, which indicate a particularly high risk of deposits, agglomeration and/or blockage.
- the common inlet chamber can be formed out as a circular annular chamber with a toroidal main flow channel wall.
- a circular annular chamber with a torus-like main flow channel wall not only promotes an even, unhindered flow of the suspension feedstock flow in the inlet chamber, but also promotes the most uniform possible distribution of the suspension feedstock flow to the individual inlets of the individual hydrocyclones of the hydrocyclone arrangement . Also such an improvement in the even distribution of the suspension feedstock flow leads to improved separating effects on the individual hydrocyclones, since all hydrocyclones present are subjected uniformly to at least approximately the same proportion of suspension at at least approximately the same throughputs.
- the toroidal main flow channel wall prevents a central dead space in the inlet chamber.
- the height of the flow cross section of the inlet can correspond to the height of a flow cross section in an annular section of the annular chamber, at which annular section the inlet is connected to the annular chamber. This means that, for example, a top wall section of an inlet pipe can transition flush into a top wall section of the annular chamber.
- a bottom wall section of the inlet pipe can merge flush into a bottom wall section of the annular chamber. Any slight differences in height that cannot be avoided structurally can be reduced by gradual wall transitions. In this way too, undesired turbulence can be prevented or at least largely avoided.
- the off-centre, in particular tangential feed of the suspension feed material flow into the annular chamber avoids a sudden deflection of the flow and also helps to avoid unwanted turbulence.
- the annular chamber can be designed with a decreasing flow cross section in the direction of flow of the suspension.
- the decreasing flow cross-section can be adapted to the successive separation of a portion of the suspension in a hydrocyclone.
- the decreasing flow cross-section can be adjusted so that in the course of Strö determination of the suspension feedstock flow through the annular channel Annular chamber, during or after the separation of a suspension portion into an inlet of a hydrocyclone, the flow cross-section is reduced in accordance with the remaining, non-separated residual suspension portion, so that the flow velocity is at least largely or completely maintained.
- the decrease in the flow cross section can thus be adapted to the reduction in the volume flow of the suspension in the ring channel due to a respective branching off of a suspension portion of the suspension feed material flow into one of the outlets to the first and second inlets of the first and second hydrocyclones.
- the annular chamber can be designed with a decreasing flow cross section in the direction of flow of the suspension by continuously or stepwise reducing the height of the flow cross section of the annular chamber in the direction of flow.
- the height of the flow cross-section of the annular chamber can be reduced in the direction of flow, in that a section of the annular chamber's ceiling wall is designed to decrease continuously or step by step in the direction of flow.
- a reduction in the height of the flow cross section of the annular chamber can be achieved in that the top wall section of the annular chamber is lowered.
- the ceiling wall section of the annular chamber can also be helical in this respect.
- the height of the flow cross-section of the annular chamber can be reduced in the direction of flow.
- a bottom wall portion of the annular chamber in Strö measurement direction is formed continuously or gradually increasing.
- opposite side wall sections of the annular chamber can also be continuously or gradually reduced in terms of their distance, in order to continuously or gradually reduce the flow cross section of the annular chamber in the direction of flow .
- the annular chamber can have a recirculation channel section which, in the direction of flow of the suspension in the annular chamber, is downstream of the last outlet for discharging a final portion of the suspension from the common inlet chamber into the last hydrocyclone, with a residual suspension remaining in the annular chamber being returned to the annular section of the annular chamber , to which the inlet is connected.
- impurities in particular the heavy fraction and/or light fraction that do not belong to the accepts, which could otherwise accumulate in a ceiling area of the ring channel, can be introduced into the newly flowing suspension feed material flow and resuspended therein and guided away from the ceiling area .
- the recirculation channel section of the annular chamber can be designed to layer the remaining residual suspension below the suspension feed stream.
- the impurities are particularly well mixed with the new suspension feedstock stream and, in particular, are carried away particularly well from the ceiling area of the ring channel.
- the inlet can be connected to an annular section of the annular chamber, which is positioned between two immediately adjacent outlets in two inlets of the first and second hydrocyclones.
- Such an arrangement prevents the suspension feedstock flow from first being deflected into a circular flow in a first annular section before a first portion of the suspension is branched off from the annular channel.
- Positioning the inlet between two immediately adjacent outlets in two inlets of the first and second hydrocyclones prevents the suspension feedstock flow from being discharged directly into the first hydrocyclone before an annular flow has set in.
- the processes can be arranged at equal circumferential distances from egg nander branching off from the annular chamber to the running chamber. Since the outlets are arranged at equal circumferential distances from one another, a respective branching off of a portion of the suspension in the annular flow path takes place at equal distances from one another. This further contributes to conformal separation in the individual hydrocyclones.
- the suspension feedstock flow or the remaining suspension feedstock stream can equalize again after overflowing a drain before a renewed suspension portion is separated at the next drain.
- Transition areas from the ring chamber to the drains can have rounded contours. Such rounded contours can be formed by large radii at transition curves of wall sections of the annular chamber. This also minimizes potential stalls or turbulence, which means that sudden pressure losses in the flow path can be reduced or prevented altogether.
- hard edges are avoided or prevented, so that there is no hard oncoming flow, which could cause suspended impurities to accumulate and deposit.
- the rounded contours of the transition areas can each have radii of between 5 and 50 millimeters, in particular 20 to 30 millimeters.
- the inner walls of the inlet, the annular chamber and/or the outlets can in particular be smooth-walled and/or free of built-in structures, projections and/or steps. This can also prevent potential stalls or turbulence, so that there is no risk of sudden pressure losses in the flow path.
- the annular chamber can encompass a central axial passage in which a common outlet of the hydrocyclone arrangement is arranged, via which the depleted suspension fractions of both the at least one first hydrocyclone and the at least one second hydrocyclone are discharged together.
- the headpipes are the individual hydrocyclones together to form a common outlet, the common outlet, for example a common outlet pipe, being guided along outside the annular chamber, namely centrally through an existing hole in the housing of the annular chamber in the sense of a handle opening of a full torus, ie through the axial passage.
- An outer jacket wall section of the outlet and/or outer jacket wall sections of deflection devices of the overflow pipes of the at least one first hydrocyclone and of the at least one second hydrocyclone can each form an inner wall section of the annular chamber.
- the annular chamber can be formed by a multi-part Kammerge housing.
- an upper half of the chamber housing can be designed in the manner of a cover.
- the helical top surface can be formed in such a cover.
- a lower and/or inner chamber housing half can be shaped in such a way that one or more inner wall sections on the inside of the annular chamber simultaneously form the outer jacket wall of the outlet and/or outer jacket wall sections of pipe sections of the overflow pipes.
- Show it: 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 with the annular chamber cut open,
- FIG. 3 shows a perspective partial representation of the hydrocyclone arrangement according to FIG. 2 in a side view with the annular chamber shown closed
- FIG. 4 shows a schematic representation of a development from the annular chamber with a flow cross section that decreases continuously in the direction of flow
- FIG. 5 shows a tabular representation of specific values for an exemplary embodiment of the annular chamber with a flow cross section that decreases continuously in the direction of flow.
- 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 separating chamber 3.1, a first inlet 4.1 opening tangentially into the first separating chamber 3.1 for supplying a first suspension part of a suspension feedstock flow into 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 separating chamber 3.2, a second inlet 4.2 tangentially opening into the second separating chamber 3.2 for feeding a second suspension portion of the suspension feed material flow into the second separating 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 comprises 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 with these radial directional components in the common outlet 7 are switched on.
- the deflection devices 8.1, 8.2 are formed, each of which is located in an axially extending dip tube section 9.1, 9.2 of each respective overflow pipe 6.1, 6.2 to deflect guided depleted Sus pensions fraction by 90 degrees from the axial direction in a radial direction.
- the hydrocyclone arrangement 1 has a common inlet chamber 10 with an inlet 10a for introducing the suspension feed stream into the common inlet chamber 10.
- To the running chamber 10 are one of the number of first and second hydrocyclones 2.1, 2.2 corresponding number of processes
- the inlet 10a is connected to an annular section of the annular chamber which runs between two directly adjacent outlets 11.1, 11.2, 11.3, 11.4 into two inlets 4.1, 4.2 of the first and second hydrocyclones
- the processes 11.1, 11.2, 11.3, 11.4 are arranged in uniform order starting distances from each other spaced from the annular chamber from branching to the inlet chamber 10.
- 11.1, 11.2, 11.3, 11.4 have rounded contours, as shown in FIG.
- the rounded contours of the transition areas can each have radii of between 5 and 50 millimeters, in particular 20 to 30 millimeters.
- the inner walls of the inlet 10a, the annular chamber and/or the outlets 11.1, 11.2, 11.3, 11.4 are preferably smooth-walled and/or formed free of fixtures, projections and/or steps.
- the annular chamber encloses a central axial passage 14, in which a common outlet 7 of the hydrocyclone arrangement 1 is arranged, as is shown in particular in Fig.l, via which the depleted suspension fractions of both the at least one first hydrocyclone 2.1 and the at least a second hydrocyclone 2.2 together leads ask.
- An outer jacket wall section of the outlet 7 and/or outer jacket wall sections of deflection devices 8.1, 8.2, i.e. pipe sections of the overflow pipes 6.1, 6.2 of the at least one first hydrocyclone 2.1 and of the at least one second hydrocyclone 2.2 each form an inner wall section of the annular chamber.
- the common inlet chamber 10 is designed as an annular chamber, to which the inlet 10a is connected in a tangential orientation.
- the common inlet chamber 10 is designed as a circular annular chamber with a torus-like main flow channel wall.
- the shape of the annular chamber or the housing shell of the annular chamber can deviate from an ideal shape of a torus surface. Due to additional optional features that may be present, the shape of the ring chamber may also deviate from an ideal torus surface.
- a top wall 12 of the annular chamber can be designed in a helical shape, as can be seen in particular in FIG is, so that the cross-sectional contour of the annular chamber is not a circle, as is also shown in FIG.
- the height of the flow cross section of the inlet 10a corresponds to the height of the flow cross section in an annular section of the annular chamber at which annular section the inlet 10a is connected to the annular chamber.
- the annular chamber is designed with a decreasing flow cross-section starting from the inlet 10a in the direction of flow of the suspension.
- the decrease in the flow cross-section is due to the reduction in the volume flow of the suspension in the ring channel due to a respective branching of a suspension portion of the suspension feedstock flow into one of the outlets 11.1, 11.2, 11.3, 11.4, to the first and second inlets 4.1, 4.2 of the first and second Adjusted Hydrocyclones 2.1, 2.2.
- the annular chamber is designed with a decreasing flow cross section in the direction of flow of the suspension, in that the height of the flow cross section of the annular chamber is continuously reduced in the direction of flow. This is shown schematically in FIG. 4 in a development of the flow path in the direction of flow within the ring channel.
- the top wall 12 of the inlet chamber 10 is beveled downwards in the direction of flow.
- the flow channel width can remain constant.
- the flow channel In front of the first outlet 11.1, in the area of the arrow PI, the flow channel has its original flow cross section. In the area of the arrow P2 at the level of the first outlet 11.1, the reduction of the flow cross section begins is further reduced uniformly over the second outlet 11.2, the third outlet 11.3 and the fourth outlet 11.4, along the flow through the areas of the arrows P3 and P4. After the fourth outlet 11.4, which in the present case of the shown embodiment of a hydrocyclone arrangement with a total of four hydrocyclones is the last outlet, a residual flow cross-section remains through which a residual suspension is returned to the annular section of the annular chamber, as indicated by the arrow P5 is.
- the annular chamber has a recirculation channel section 13 which, in the direction of flow of the suspension in the annular chamber, is downstream of the last outlet for discharging a final portion of the suspension from the common inlet chamber 10 into the last hydrocyclone 2.1, 2.2 and the residual suspension remaining in the annular chamber in the Annular section of the annular chamber returns to which the inlet 10a is ruled out.
- the recirculation channel section 13 of the annular chamber is designed to layer the remaining residual suspension below the suspension feed material stream.
- the cross-sectional area of the flow channel of the annular chamber at the inlet before the first outlet 11.1 is 1830 mm 3 and continuously decreases to 840 mm 3 before the fourth Process 11.4. Accordingly, the cross-sectional area of the flow channel of the annular chamber in front of the second outlet 11.2 is, for example, 1740 mm 3 and in front of the third outlet 11.3, for example, 1290 mm 3 .
- the flow channel of the flow channel of the annular chamber has a height of 61 mm at the inlet before the first outlet 11.1.
- the height of the flow channel is then continuously reduced down to 28 mm before the fourth outlet 11.4.
- the height of the flow channel of the annular chamber in front of the second outlet 11.2 is, for example, 58 mm and in front of the third outlet 11.3, for example, 43 mm.
- the volume flow in the flow channel of the annular chamber at the inlet before the first outlet 11.1 is, for example, 450 l/min and decreases continuously up to 1501/min before the fourth run 11.4. Accordingly, the volume flow in the flow channel of the annular chamber before the second outlet 11.2 is, for example, 350 l/min and before the third outlet 11.3, for example, 250 l/min. After the fourth sequence 11.4, the volume flow in the recirculation channel section 13 is 50 l/min, for example.
- a flow rate of, for example, 4.1 m/s then occurs in the flow channel of the annular chamber at the inlet before the first outlet 11.1, which continuously decreases to 3.0 m/s before the fourth outlet 11.4.
- the flow speed in the flow channel of the annular chamber before the second outlet 11.2 is, for example, 3.35 m/s and before the third outlet 11.3, for example 3.25 m/s.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Cyclones (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021117901.7A DE102021117901A1 (de) | 2021-07-12 | 2021-07-12 | Hydrozyklone-Anordnung zum Zentrifugalabscheiden von Feststoffen aus einer Suspension |
| PCT/EP2022/066122 WO2023285055A1 (de) | 2021-07-12 | 2022-06-14 | Hydrozyklone-anordnung zum zentrifugalabscheiden von feststoffen aus einer suspension |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4370743A1 true EP4370743A1 (de) | 2024-05-22 |
Family
ID=82163583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22733086.7A Pending EP4370743A1 (de) | 2021-07-12 | 2022-06-14 | Hydrozyklone-anordnung zum zentrifugalabscheiden von feststoffen aus einer suspension |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4370743A1 (de) |
| CN (1) | CN117642539B (de) |
| DE (1) | DE102021117901A1 (de) |
| WO (1) | WO2023285055A1 (de) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1004379A (fr) | 1947-04-11 | 1952-03-28 | Procédé et appareil de traitement de mélanges fluides hétérogènes, en particulier de pâte à papier | |
| US3543931A (en) | 1968-02-29 | 1970-12-01 | Nichols Eng & Res Corp | Multiple cyclone assembly |
| GB1209874A (en) * | 1969-04-10 | 1970-10-21 | William Robert Robinson | Hydrocyclone unit |
| FI74894C (fi) * | 1984-03-19 | 1988-04-11 | Enso Gutzeit Oy | Dubbelhydrocyklon. |
| 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 |
| US5769243A (en) * | 1996-07-30 | 1998-06-23 | Thermo Black Clawson Inc. | Through-flow cleaner with improved inlet section |
| DE20205911U1 (de) * | 2002-04-16 | 2002-07-25 | Nägele, Ulf, Dipl.-Ing., 71711 Murr | Zyklonabscheider |
| BRPI0924831B1 (pt) * | 2009-05-08 | 2022-05-10 | Ovivo Luxembourg S.A.R.L | Montagem com múltiplos hidrociclones, método para montar múltiplos hidrociclones e estrutura de suporte para múltiplos hidrociclones |
| WO2012113453A1 (de) * | 2011-02-24 | 2012-08-30 | Gea Mechanical Equipment Gmbh | Hydrozyklonanordnung |
| DE102016122225B4 (de) | 2016-11-18 | 2018-11-08 | Voith Patent Gmbh | Hydrozyklonanordnung |
-
2021
- 2021-07-12 DE DE102021117901.7A patent/DE102021117901A1/de active Pending
-
2022
- 2022-06-14 EP EP22733086.7A patent/EP4370743A1/de active Pending
- 2022-06-14 CN CN202280048938.3A patent/CN117642539B/zh active Active
- 2022-06-14 WO PCT/EP2022/066122 patent/WO2023285055A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN117642539A (zh) | 2024-03-01 |
| WO2023285055A1 (de) | 2023-01-19 |
| DE102021117901A1 (de) | 2023-01-12 |
| CN117642539B (zh) | 2026-03-03 |
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