WO2017108234A1 - Dispositif de filtration à cellules multiples et procédé d'alimentation d'un dispositif de filtration à cellules multiples en une suspension à filtrer - Google Patents

Dispositif de filtration à cellules multiples et procédé d'alimentation d'un dispositif de filtration à cellules multiples en une suspension à filtrer Download PDF

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Publication number
WO2017108234A1
WO2017108234A1 PCT/EP2016/075630 EP2016075630W WO2017108234A1 WO 2017108234 A1 WO2017108234 A1 WO 2017108234A1 EP 2016075630 W EP2016075630 W EP 2016075630W WO 2017108234 A1 WO2017108234 A1 WO 2017108234A1
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WO
WIPO (PCT)
Prior art keywords
filter
suspension
drum
washing liquid
cells
Prior art date
Application number
PCT/EP2016/075630
Other languages
German (de)
English (en)
Inventor
Wolfgang Knobloch
Original Assignee
Andritz Kmpt Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Andritz Kmpt Gmbh filed Critical Andritz Kmpt Gmbh
Publication of WO2017108234A1 publication Critical patent/WO2017108234A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/073—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
    • B01D33/09—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration with surface cells independently connected to pressure distributors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/60—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for washing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B01D33/72—Filters with filtering elements which move during the filtering operation having feed or discharge devices for feeding

Definitions

  • the invention relates to a multi-cell filter device for the filtration of a suspension and to a method for feeding a suspension to be filtered to a
  • Mutticle filter devices are used e.g. used in chemical, pharmaceutical and biological applications on an industrial scale for the filtration of suspensions.
  • Conventional Muitizellenfiltervoriquesen have for this purpose a rotatable filter drum which rotates about its horizontal longitudinal axis, and a housing in which the filter drum is accommodated.
  • On the lateral surface of the filter drum a plurality of filter cells are arranged, which are connected to the interior of the filter drum via a filter medium, e.g. a filter cloth, are connected.
  • a filter medium e.g. a filter cloth
  • Fitter cake remains in the filter cells.
  • the filter cells can be moved through different areas of the housing, in which the suspension is filtered and the filter cake is washed, dried and dispensed.
  • the filter drum for feeding the suspension with a lower portion thereof is immersed in a slurry trough so that a plurality of each
  • Filter lines simultaneously absorb the suspension.
  • a filter device is e.g. from EP 2 520 348 A1.
  • the filter drum prefferably passes in sections through a sealed suspension feed space within the housing, in which case a plurality of filter cells at the same time receive the suspension.
  • a multi-cell filter device and a method for feeding a suspension to be filtered to a multi-cell filter device are provided which make it possible to supply a suspension to be filtered to a respective filter cell in a defined manner to a filter drum.
  • a multi-cell filter device is used, for example, to prepare a suspension to be filtered, e.g. a
  • Liquid is with solid contained therein, e.g. Color pigments and / or a medical solid product to separate into a filtrate and a filter cake.
  • the filter cake is further treated (e.g., washed and / or dried) in the millette if necessary and, finally, from
  • Multicell filter device are issued, whereas the filtrate after filtration, e.g. is output directly from the multi-cell filter device.
  • the multi-cell filter device may include a filter drum, a plurality of filter cells, and a suspension feeder for supplying a filter to be filtered
  • the filter drum may have a longitudinal axis, e.g. extends at least substantially horizontally, can be rotatable about its longitudinal axis (for example, by an electric motor) and can
  • the filter drum can be supported in a housing, which encloses the filter drum, for example, at least substantially on all sides.
  • the plurality of filter cells eg 2, 3, 4, 5, 6, 7, 8, 9, 10, 10-20, 20-30, 30-40, 40-50 or more than 50
  • the filter cells can be formed on the outside of the lateral surface and in each case be radially outwardly open and distributed over the circumference of the filter drum and be arranged side by side in the circumferential direction of the filter drum.
  • the filter cells can also be arranged alongside one another along the longitudinal axis of the filter drum.
  • the filter cells can be separated from one another by means of respective radial filter cell walls (in the circumferential direction), which are arranged in angular intervals corresponding to a circumferential width of the filter cells.
  • each filter cell having an associated inner pipe (eg, a pipeline), which runs in the interior of the filter drum and connects the lateral surface facing side of the filter cell with the outside of the multi-cell filter device.
  • the inner lines can serve, for example, the Fittrat from the
  • the suspension supply means may include a suspension input section having at least one suspension input port (e.g., an input valve, an opening of a slurry supply pipe, etc.) for supplying and feeding the suspension to be filtered into the filter times, the suspension input section (in FIG.
  • the suspension to be filtered may be used during a rotary operation, e.g. during a continuous or interrupted, e.g. clocked-interrupted, rotary operation, for example during, e.g. exclusively during, stylistand periods and / or the
  • the filter drum are input from the at least one suspension input opening at least substantially from above into the radially outwardly open filter cells, e.g. flow into the filter cells at least substantially exclusively under the action of gravity.
  • the suspension it is also possible for the suspension to be pressurized (eg, over-pressurized relative to the environment of the filter drum) prior to passing through the suspension input port so as to impart a resultant pulse as it passes through the suspension input port.
  • Suspension input port e.g. be arranged laterally above and / or vertically above the Filtert drum and the suspension of the
  • Suspension input opening eg horizontal or vertical or against the vertical inclined
  • the suspension can enter the filter cells at least essentially from above, for example by gravity, at least partially following a parabolic trajectory because of gravity.
  • the suspension input region may be an unsealed closed region, e.g. an area in the housing in which the filter drum is received, which e.g. is open to the atmosphere / environment.
  • the suspension input area is e.g. no enclosed chamber which spans a plurality of adjacent filter cells and in which a suspension volume which extends beyond an absorption volume of the filter cells present in the suspension input region can be acted upon (or can be acted upon) by a fluid pressure deviating from the ambient pressure of the filter drum. That is, by means of the suspension input region, the suspension is introduced into the filter cells e.g.
  • without additional pressure for example, without a hydrostatic suspension pressure or without an additional pressure in addition to the atmospheric pressure / ambient pressure
  • additional pressure for example, without a hydrostatic suspension pressure or without an additional pressure in addition to the atmospheric pressure / ambient pressure
  • the latter means that by means of the suspension input region the suspension in the filter cells can only be charged without additional pressure, i. it is only possible to be supplied or supplied without deviating (for example higher) pressure from the (completely) other (or outside of the suspension input area) surrounding the filter drum (for example in the space between the filter drum and the housing).
  • the suspension input area in the circumferential direction of the filter drum may be defined by a suspension input angular range of the filter drum which, based on 0 ° and 380 ° as an upper apex of the filter drum, is at least substantially from 300 ° to 30 °, optionally at least substantially 345 ° to 15 ° and further optionally at least substantially extends from 350 ° to 10 °.
  • the top vertex of the filter drum may correspond to the area of the filter drum in which it has the largest gravitational potential.
  • the suspension is over a wide peripheral range of
  • the filter drum can be introduced from above into the filter cells without the suspension being able to flow over the radial filter cell walls into adjacent filter cells.
  • the suspension feeder may include a plurality of suspension input ports located in the suspension input region along the longitudinal axis of the
  • Filtering drum are arranged (for example, such that the filter cells in the longitudinal direction are completely fillable with suspension) and / or in the circumferential direction of the
  • Filter cell walls correspond, are spaced from each other.
  • the suspension input ports may be fixed in the suspension input area relative to the housing. In this way, the filter cells, e.g. individually, be filled with suspension under different conditions.
  • a suspension input port e.g. a first in the sense of rotation of the filter drum
  • Suspension input port prefilling a filter cell, e.g. with a low fill rate, and may be followed by another / in filter drum rotation direction
  • Suspension input port completely fill the prefilled filter cell, e.g. with a high filling rate.
  • the rotation of the filter drum may be interrupted during the entering of the suspension; the filter drum can e.g. be rotated clocked. It is e.g. also possible, by means of one of
  • Suspension input ports to input one type of suspension and another type of suspension into the feiter cells by means of another suspension input port, i.e., it is possible during ongoing operation of the multi-cell filter device, e.g. To enter different types of suspension in a filter tents and / or to enter different suspensions in different filter cells.
  • the multi-cell filter device may further include a washing liquid supply means for supplying a washing liquid (for example, for washing the suspension or the suspension)
  • the washing liquid supply means may include a washing liquid input portion having at least one
  • a washing liquid input port e.g., a washing nozzle or a shower head for introducing the washing liquid into the filter cells.
  • Washing liquid input area can be arranged above and / or laterally next to the filter drum and in the direction of rotation of the filter drum the
  • Suspension input area (e.g., directly).
  • the washing liquid is rotating
  • the washing liquid input portion of the washing liquid supply means may be replaced in the circumferential direction of the filter drum by a
  • Washing liquid input angle range of the filter drum to be defined that, based on 0 ° and 360 ° as the upper apex of the filter drum according to, at least substantially from 0 ° to 75 ° "optionally at least substantially from 15 ° to 60 °, more optionally at least substantially extending from 30 ° to 45 °. In this way, the washing liquid over a wide circumferential direction range in the
  • Fiter cells can be supplied without that they can flow over the radial filter cell walls away into adjacent filter cells.
  • the washing liquid supply device may have several components
  • Washing liquid input area along the longitudinal axis of the filter drum are arranged and / or in the circumferential direction of the filter drum with angular intervals, e.g. correspond to the angular distances of the radial filter cell walls, are spaced from each other. In this way, the filter cake in the individual
  • Filter cells are washed separately and / or several times, e.g. with one type of washing liquid, which is input through a washing liquid input port, and with another type of washing liquid, which is another one
  • washing liquid input opening ⁇ the washing liquid input openings
  • the washing liquid input region may be an unsealed closed region (e.g., analogous to the slurry input region), such that in FIG.
  • Filter cell goes out, with one of the ambient pressure of the filter drum
  • deviant liquid sd juck can be acted upon.
  • the deviant liquid sd juck can be acted upon.
  • Washing fluid input area not separate from / opposite to
  • Filter cells e.g. at least essentially vertically below the
  • Suspension input opening of the suspension feeder are moved past and the suspension at least substantially only by gravity from above into the filter cells are entered into. That is, the suspension can flow in the direction of gravity into the (e.g., vertically) underlying filter cell. Further, in the process, e.g. each entering the suspension into the filter cell are interrupted before a new filter cell is moved under the suspension input opening. Thus, the suspension may be e.g. exactly one filter cell are supplied.
  • the suspension may be e.g. at least in the
  • the rotation of the filter drum may be interrupted when starting the suspension into eg a single filter cell, and the rotation of the filter drum may be restarted when the input of the suspension is terminated. That is, the filter drum can be synchronized / clocked corresponding to the suspension input, for example.
  • the multi-layer filter device may further comprise a drying section for drying the suspension or filter cake accommodated in the filter cells, optionally having a drying device with at least one drying gas inlet opening for supplying a drying gas (eg air, steam, nitrogen, etc.) to the filter cells is provided.
  • a drying gas eg air, steam, nitrogen, etc.
  • the drying area can be arranged below and / or next to the filter drum, so that the drying gas during the rotary operation or the continuous or cycled rotation of the filter drum from the at least one drying gas inlet opening from below and / or from the side to the radially outwardly open Filter cells can be routed.
  • the drying area is, for example, provided substantially at the bottom (relative to the vertical) on the filter drum and may be defined in the circumferential direction of the filter drum by a drying angle range corresponding to at least 0 ° and 360 ° as an upper apex of the filter drum Substantially extends from 0 ° to 270 ', at least substantially from 75 ° to 270 ° and optionally at least substantially from 90 ° to 255 °.
  • a plurality of drying gas inlet openings may be provided in the drying area, which in the
  • Drying area along the longitudinal axis of the filter drum are arranged and / or in the circumferential direction of the filter drum with angular intervals, the to the
  • Washing liquid input area, the drying area and (from the drying area) in the circumferential direction of the drum further a range to the
  • Suspension input area within the housing e.g. directly adjacent to each other without additional sealing areas interconnected; that is, they are in fluid communication. That is, in the space between the fitter drum and the housing, the suspension input area, the
  • Fluid communication (with each other) are located and without additional sealing areas adjacent to each other.
  • the Muttizellenfiltervoriques may have a control device, wherein the control device may be connected to a level sensor and / or a sensor for detecting a cake height.
  • the level sensor and / or sensor may be arranged on the Fiftertrommel to detect a suspension level or the cake height in the filter cells.
  • the control device may e.g. depending on the detected suspension level or of the detected cake height in the filter cells, a rotational speed of the filter drum, a pressure difference with which the filter cells can be acted upon, a suspension output quantity, a
  • the multi-cell filter device may include a pressure differential generating means "which is set so that via at least one of the filter cells across a pressure difference is generated.
  • the pressure difference acts, for example, such that a higher pressure predominates on the side of the filter cell which is open towards the outside than on the side of the filter cell facing the jacket surface, for example, if the filter cell moves through the rotation of the filter drum in the suspension input region, in the
  • washer input area and / or located in the drying area From the pressure difference generating means is e.g. a negative pressure can be generated, which e.g. over (at least one) of the inner conduits acts on at least one of the filter cells so that e.g. a vacuum or vacuum filtration is possible.
  • the pressure difference generation means may be designed such that e.g. in the housing relative to the environment (the ambient or atmospheric pressure), an overpressure can be generated, for. to allow overpressure filtration.
  • the pressure differential e.g., exclusively acts upon entering the suspension into the filter cell (s) and / or (e.g., only) after stopping the suspension from entering the filter cell (s), e.g.
  • the control device controls the control device to carry out and / or assist the filtration of the suspension.
  • This can also apply analogously for the filtration or washing of the filter cake by means of the washing liquid.
  • the pressure difference is controlled so that a force (e.g., a compressive force) results on the filter cake to hold the filter cake in the filter cells when the filter cells are at the bottom of the filter drum.
  • the filter cells of the multi-cell fitter device can be connected to their
  • the filter cells may be surrounded by a peripheral boundary wall.
  • the filter cells can pass through the filter cell walls in the longitudinal and / or cross section of the filter drum, e.g. radially outwardly widened, e.g. at least in the
  • Trapezoidal cross section is the open side of the filter cell to the outside.
  • a ratio of a filter cell width in the circumferential direction of the filter drum, for example, the length of the base side of the trapezoidal cross-section, to a filter cell height in the Radial direction of the filter drum, for example, a radial filter cell wall height be about 0.5 to 8.
  • the previously described types of design may cause a more uniform filtration to take place throughout the filter cell and a holding force on the filter cake may be increased due to the pressure differential.
  • the suspension may be filtered by a static pressure of the suspension (eg, a suspension liquid pressure) in the filter cells (eg, exclusively) while the suspension is being introduced into the filter cells and / or after the inputting of the suspension into the filter cells ,
  • a static pressure of the suspension eg, a suspension liquid pressure
  • the pressure difference e.g., due to vacuum filtration or the
  • Overpressure filtration for example, controlled by the control device, support the filtration of the suspension and / or the filter cake.
  • FIG. 1 a schematic front view (front view) of a filter drum of a multi-cell filter device according to an embodiment, a sectional view taken along the line A-A of Figure 1, wherein the filter drum is shown cut longitudinally, a schematic front view (front view) of a
  • Multi-cell filter device according to an embodiment, and a schematic front view (front view) of a
  • Multi-cell filter device in which various work areas are designated.
  • FIGS 1 and 2 show a schematic front view of a filter drum of a multi-cell device and a sectional view along the line AA of Figure 1 according to an exemplary embodiment.
  • the filter drum 1 is a cylinder body with a longitudinal axis A, which extends horizontally, with two end faces and a lateral surface 3.
  • the filter drum 1 is about the longitudinal axis A, for example in a clockwise direction (see arrow DS in Figure 1), rotatable (eg an electric motor, not shown).
  • the outer periphery of the filter drum 1 is defined by the lateral surface 3, which is formed from a filter material, such as a filter cloth 4.
  • a plurality of filter cells 5 is formed, in this case, for example, twenty filter cells.
  • Each individual filter cell 5 is open radially outward.
  • the twenty filter tents are distributed over the circumference of the filter drum 1, and arranged in the circumferential direction of the filter drum 1 side by side and are separated by respective radial Fitterzellenclaim 7 in the circumferential direction.
  • the angular distances of the radial filter cell walls 7 in the circumferential direction for example, each about 18 ° such that it corresponds to a width of each of the filter cells 5. Since the filter cells 5 extend over the entire length of the filter drum 1, the filter drum 1 is provided in total with twenty filter tents.
  • the filter cells 5 may extend, for example, approximately over half the length or one third of the length of the filter drum 1, the filter drum 1 then being provided, for example, with forty or sixty filter tents which extend in the longitudinal direction and are arranged side by side in the circumferential direction.
  • the filter cells 5 are bounded at their longitudinal ends by end filter cell walls 9 (see FIG. 2), which are connected to the radial
  • Fitter cell walls 7 are connected to the filter cells 5 filtertrommel houses- and limit end.
  • the filter cells 5 are formed by the filter cell walls 7 and 9 in the longitudinal and / or cross section of the filter drum 1, for example, at least substantially trapezoidal, wherein a base side of the trapezoidal cross-section forms the outwardly open side or outside 5-1 of the filter cell 5 and the Tip side of the trapezoidal cross section forms the closed side or inner side 5-2 of the filter line 5 located on the lateral surface 3. Consequently, an area of the outer side 5-1 is greater than an area of the inner side 5-2.
  • the filter lines 5 are fluidly connected to the inside of the filter drum 1 through the filter cloth 4 on its inner side 5-2.
  • a filtrate Sammetabrough 1 1 separate for each filter cell 5 is provided inside the filter drum 1, in which a filtrate, which passes through the filter cloth 4, is collected (see the following description of the filtration).
  • the filtrate taken in the filtrate collection section 11 is by an associated inner pipe 13 in.
  • Multi-cell filter device provided in a housing 31.
  • the housing 31 receives the filter drum 1 and rotatably supports it therein.
  • a suspension 33 is fed into the housing 31, which is filtered by means of the multi-cell filter device.
  • the suspension 33 is entered into the upper of the filter cells 5, wherein a filtrate 35 emerges from the filter cells 5 through the filter cloth 4 through and in the filtrate-Samme labitesen 11 is collected and output via the inner lines 13 from the multi-cell filter device.
  • a filter cake 37th arises from the particles of the suspension 33, which are retained in the filter cells 5 by the filter cloth 4, in the filter tents 5, a filter cake 37th
  • Multi-cell filter device comprises a suspension feeder 41, wherein the suspension feeder 41 has a suspension input area S with in this case two suspension input ports 45-1 and 45-2 for inputting the suspension 33 to be filtered into the filter cells 5.
  • the suspension feeder 41 has a suspension input area S with in this case two suspension input ports 45-1 and 45-2 for inputting the suspension 33 to be filtered into the filter cells 5.
  • Suspension input area S is located on a (radially) upper side of
  • Filter drum 1, and the two suspension input ports 45-1 and 45-2 are disposed in the suspension input portion S above the filter drum 1, wherein the suspension input portion S in the circumferential direction of the filter drum 1 is defined by a suspension input angular range ⁇ of the filter drum 1, which is 0 ° and 360 ° as an upper rail SP of the fifting drum 1, extends at least substantially from 330 ° to 5 ° (see Figure 4).
  • the first suspension input port 45-1 is disposed at about 342 ° and serves to input the suspension 33 into the filter cells 5 at a low input rate (prefilling)
  • the second suspension input port 45-2 is located at about 0 ° and serves to input the Suspension 33 in the Fitterzellen 5 with a high input rate
  • the suspension 33 can be introduced from the two suspension input openings 45-1 and 45-2 from above into the radially outwardly open fitter cells 5 during the rotary operation or rotation of the fifting drum 1.
  • a washing liquid supply means 51 for supplying a washing liquid 53 to the filter drum 1, wherein the
  • Washing liquid supply means 51 a washing liquid input portion W with e.g. four washing liquid insertion holes 55-1 to 55-4 for inputting the
  • Washing liquid 53 has in the filter lines 5.
  • the washing liquid input area W is defined by a washing liquid input angle range ⁇ of about 5 ° to 77 °.
  • the washing liquid insertion openings 55-1 to 55-4 are in the
  • Circumferential direction in the washing liquid input portion W arranged in order, e.g. are the first, the second, the third, and the fourth
  • Washing liquid input port 55-1 to 55-4 at about 18 °, 36 °, 54 ° and 72 °, respectively.
  • the washing liquid input ports 55-1 to 55-4 serve to remove e.g. at different input rates, the wash liquid 53 (e.g., various
  • washing liquids e.g. Alcohol or water
  • the washing liquid 53 after passing into the interior of the filter drum 1, also forms a filtrate 35, which is collected by the filtrate collecting sections 11, passed over the inner conduits 13 and discharged from the multi-cell filter device.
  • Trocknungsberetch T provided, which is provided at least substantially at the bottom of the filter drum 1 and which, for. is defined by a drying angle range ⁇ of about 75 ° to 240 °.
  • ⁇ drying angle range
  • a drip catcher 55 may be provided at the bottom of the housing 31, e.g. Wash fluid residues 53 to collect and from the
  • the drying of the filter cake 37 can be assisted analogously to the feeding and introduction of the suspension 33 or the washing liquid 53, i. by blowing a drying gas, which is not further described here.
  • a filter cake dispenser 61 is arranged.
  • the Fitterkuchen dispenser is at about 275 ° and has a nozzle 63 and an output shaft 65.
  • Output shaft 63 can be output from the multi-cell filter device.
  • the nozzle 63 may e.g. be supported or replaced by a mechanical scraper (not shown), which cyclically penetrates into the past it moved filter cells 5 and the filter cake 37 breaks out.
  • a pressure e.g., a gas pressure
  • a pressure may be generated on the inner side 5-2 of the filter cell 5 via the inner conduit 13 which additionally or alternatively pushes the filter cake 37 away from the filter cloth 4.
  • a filter cell cleaning device 71 may be provided after the filter cake dispenser 61. This can be arranged approximately at 315 ° and can analogously to the washing liquid supply device 51st
  • the multi-cell filter device with a
  • Pressure difference generating means 81 e.g., a sub-Z overpressure pump
  • Pressure difference generating means 81 may be provided, which in the inner conduits 13 provides a pressure to the. Ambient pressure of the filter drum 1 is different. The one of the
  • Pressure difference generating means 81 generated pressure may e.g. by means of a control disc (not shown) in the inner conduits 13. That is, the inner pipes 13, which rotate together with the filter drum 1, are at openings of the control disk, which is located on the front side of the filter drum 1 stationary in the housing 31, moved past and with the openings
  • Pressure difference generating means 81 generate a negative pressure, which causes a pressure difference across the filter cells 5, so that in the suspension input area S and / or in the washing liquid W and / or in the drying area T, the suspension 33 and the filter cake 37 is sucked / pressed into the filter cells 5 to the To assist filtration or to provide a holding force on the filter cake 37 in the filter cells 5.
  • an overpressure can also be generated in the inner lines 13, for example in the region of the filter cake.
  • Output device 61 That is, the pressure difference can be selectively provided in the various peripheral regions of the filter drum 1.
  • a control device 91 may be provided with a level sensor 93.
  • the level sensor 93 is e.g. disposed adjacent to the suspension input port 45-2 to move a suspension level of each one past it
  • the detected level may be transmitted to the control device 91 and used there to detect e.g. controlling a rotational speed of the filter drum 1, a washing liquid input amount, the generated differential pressure, etc.
  • the washing liquid input quantity and a negative pressure which is present at the filter tents 5 in the washing liquid input region W can be matched to the rotational speed of the filter drum 1, so that precisely the required quantity of washing liquid is sprayed into the filter cells 5 passing by it and is drawn off by the negative pressure.
  • the housing 31 interconnected, e.g. directly adjoining each other without additional sealing areas, i.e., they are in fluid communication. Further, the housing is connected via the output shaft 63 and the drip catch 55 to the atmosphere. Consequently, no separately sealed closed area is present in the housing 31, i. , There are no individual, acted upon with different pressure chambers in the housing 31, which allows a simplified sealing of the housing 31 and the filter drum 1. That is, by means of the suspension input region S, the suspension can be fed to the filter cells 5 at least essentially without additional pressure, for example, essentially only by gravity. However, it may be possible to fit the interior of the housing 31 e.g. to be separated from the atmosphere as a whole, e.g. to provide a housing interior jerk or to complete the fitting process, e.g. under
  • the filter drum 1 shown in Fig. 3 is rotated clockwise (see arrow DS) with the filter cells 5 moved below the suspension input ports 45-1 and 45-2.
  • a fitter cell 5 is at least substantially vertically below the first suspension input opening 45-1, it is controlled by the control device 91 to dispense a first quantity of suspension 33.
  • the suspension 33 flows under gravity into the filter tents 5, so that the filter tents 5 is pre-filled.
  • the suspension input is controlledly terminated by the control device 91.
  • the rotation of the filter drum 1 can be interrupted during the entering of the suspension 33 into a respective filter cell 5 and respectively resumed after the input, eg controlled by the control device 91.
  • Suspension input amount for prefilling is e.g. chosen so that the filter cloth 4 of the filter cell 5 is completely wetted with suspension 33, but no suspension over the radial and end filter cell walls 7 and 9 passes.
  • Filter cell 5 is clocked or continuously moved due to the rotation (see arrow DS in Figure 3) of the filter drum 1 below the second suspension input port 45-2, wherein the control device 91 controls the second suspension input port 45-2, further suspension 33 in the prefilled filter cell enter. This is e.g. executed so long until the level sensor 93 outputs a level of the filter cell 5, which corresponds to a predetermined level value. Also the second
  • Suspension input port 45-2 inputs the suspension 33 at least substantially under the action of gravity into the prefilled filter cell 5.
  • the suspension input of the second suspension input port 45-2 is completed before a new pre-filled filter line 5 moves below the second suspension input port 45-2. Simultaneously with the second suspension input, the
  • Pressure differential generating means 81 on the inside 5-2 of the pre-filled and / or the fully-filled filter cell 5 generate a negative pressure to perform the filtration or support.
  • Suspension inputs are the filter cells 5 of the drum fittertrommel 1 continuously, ie continuously or clocked, filled with the suspension 33. Since this filling takes place with known (controlled) suspension amounts into the individual filter cells 5, the suspension input volume used conventionally (ie, the sealed chamber or the trough) can be omitted. Also, the input of the suspension 33 may be performed without controlling the control device 91 using, for example, predetermined parameters regarding the amount of suspension input, the filter drum speed, a cycle time, etc
  • Supply of the suspension to the filter cells 5 can be discontinuous or continuous.
  • continuous suspension feed is, for example, by means of
  • Suspension input opening 45-1 and 45-2 synchronized with the speed of the filter drum 1 such that the filter drum 1 is filled in each case without overflow of suspension (for example, in several Füterzellen 5 ⁇ .

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  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

Un dispositif de filtration à cellules multiples selon l'invention peut comprendre les éléments suivants : un tambour filtrant (1), lequel présente un axe longitudinal qui s'étend horizontalement, et lequel peut tourner autour de son axe longitudinal et définit une surface extérieure (3), une pluralité de cellules filtrantes (5) qui sont réalisées sur l'extérieur de la surface extérieure (3) et sont respectivement ouvertes radialement vers l'extérieur et sont disposées de manière répartie sur la périphérie du tambour filtrant (1) et de manière juxtaposée dans la direction périphérique du tambour filtrant et qui sont séparées les unes des autres au moyen de parois radiales (7) de cellules filtrantes respectives, lesquelles parois radiales sont espacées les unes des autres de distances angulaires correspondant à une largeur périphérique des cellules filtrantes (5), et un dispositif d'alimentation en suspension (41) pour l'alimentation du tambour filtrant (1) en une suspension (33) à filtrer, le dispositif d'alimentation en suspension (41) comprenant une zone d'introduction de suspension dotée d'au moins une ouverture d'introduction de suspension (45-1, 45-2) pour l'introduction de la suspension (33) à filtrer dans les cellules filtrantes (5), la zone d'introduction de suspension (S) étant disposée au-dessus du tambour filtrant (1), de telle sorte que la suspension (33) à filtrer puisse, pendant le fonctionnement rotatif du tambour filtrant (1), être introduite à partir de ladite au moins une ouverture d'introduction de suspension (45-1, 45-2) par le haut dans les cellules filtrantes (5) ouvertes radialement vers l'extérieur.
PCT/EP2016/075630 2015-12-23 2016-10-25 Dispositif de filtration à cellules multiples et procédé d'alimentation d'un dispositif de filtration à cellules multiples en une suspension à filtrer WO2017108234A1 (fr)

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DE102015122809.2 2015-12-23
DE102015122809.2A DE102015122809A1 (de) 2015-12-23 2015-12-23 Multizellenfiltervorrichtung und Verfahren zum Zuführen einer zu filtrierenden Suspension an eine Multizellenfiltervorrichtung

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114616040A (zh) * 2019-10-31 2022-06-10 Bhs桑托芬有限公司 旋转压力过滤器

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US1198880A (en) * 1913-03-13 1916-09-19 Emanuel Wagner Rotary vacuum-filter.
US2352304A (en) * 1940-08-03 1944-06-27 Frank W Young Filter
US2481110A (en) * 1945-07-31 1949-09-06 Gen Am Transport Dewatering process
DE10005796A1 (de) 2000-02-10 2001-08-16 Bhs Sonthofen Maschinen & Anlagenbau Gmbh Drehfilteranlage
DE102004033328A1 (de) * 2004-07-09 2006-02-09 Bhs-Sonthofen Gmbh Filter mit Feststoff-Resuspendierung
EP2520348A1 (fr) 2011-05-02 2012-11-07 Siemens Aktiengesellschaft Dispositif de filtre, son procédé de fabrication et d'utilisation

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DE878795C (de) * 1950-03-10 1953-10-19 Erich Fest Kontinuierlich arbeitender Drehfilter fuer Betrieb mittels Unter- oder UEberdruck oder beider zugleich

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1198880A (en) * 1913-03-13 1916-09-19 Emanuel Wagner Rotary vacuum-filter.
US2352304A (en) * 1940-08-03 1944-06-27 Frank W Young Filter
US2481110A (en) * 1945-07-31 1949-09-06 Gen Am Transport Dewatering process
DE10005796A1 (de) 2000-02-10 2001-08-16 Bhs Sonthofen Maschinen & Anlagenbau Gmbh Drehfilteranlage
DE102004033328A1 (de) * 2004-07-09 2006-02-09 Bhs-Sonthofen Gmbh Filter mit Feststoff-Resuspendierung
EP2520348A1 (fr) 2011-05-02 2012-11-07 Siemens Aktiengesellschaft Dispositif de filtre, son procédé de fabrication et d'utilisation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114616040A (zh) * 2019-10-31 2022-06-10 Bhs桑托芬有限公司 旋转压力过滤器
CN114616040B (zh) * 2019-10-31 2023-11-03 Bhs桑托芬有限公司 旋转压力过滤器

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