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WO2010075916A1 - Procédé et dispositif de filtration de fluides sur précouche - Google Patents

Procédé et dispositif de filtration de fluides sur précouche Download PDF

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Publication number
WO2010075916A1
WO2010075916A1 PCT/EP2009/008420 EP2009008420W WO2010075916A1 WO 2010075916 A1 WO2010075916 A1 WO 2010075916A1 EP 2009008420 W EP2009008420 W EP 2009008420W WO 2010075916 A1 WO2010075916 A1 WO 2010075916A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter unit
inlet
filter
flow
main line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2009/008420
Other languages
German (de)
English (en)
Inventor
Ulrich Sander
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KHS GmbH
Original Assignee
KHS 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 KHS GmbH filed Critical KHS GmbH
Publication of WO2010075916A1 publication Critical patent/WO2010075916A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/02—Precoating the filter medium; Addition of filter aids to the liquid being filtered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/114—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/885—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices with internal recirculation through the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/04—Supports for the filtering elements
    • B01D2201/043—Filter tubes connected to plates
    • B01D2201/0446—Filter tubes connected to plates suspended from plates at the upper side of the filter elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/20—Pressure-related systems for filters
    • B01D2201/204—Systems for applying vacuum to filters
    • B01D2201/208—Systems for applying vacuum to filters by venturi systems

Definitions

  • the invention relates to a method and a device for precoat filtration of fluids, in particular beverages such as beer, after which a filter unit is fed via at least one inlet unfiltered and filtered by means of at least one arranged in the filter unit filter element.
  • filter aids which may be diatomaceous earth or cellulose, polymers, etc.
  • Cellulose-based filter aids are described, for example, in DE 198 04 882 A1.
  • filter aids are added continuously after the so-called Grundanschwemmung to ensure the required separation efficiency and permeability of the forming on the filter element filter cake.
  • filter elements often filter candles or candle gap filters are used, which are regularly installed hanging in a filter vessel as a filter unit.
  • For the hanging attachment of the filter cartridges usually provides a partition between a non-filtrate and a filtrate within the filter unit, as described for example in DE 201 22 045 U1, which explains a generic method and a corresponding device.
  • the filter aid itself can be metered in as a mixture, in any case has a certain particle size distribution.
  • the invention is based on the technical problem of specifying a method and a device for precoat filtration of fluids, with whose or with their help a generally homogeneous structure of the filter cake succeeds on the filter element.
  • a generic method for precoat filtration of fluids in the invention is characterized in that the unfiltered material within the filter unit by means of steering means at least one closed flow circulation with two or more describes parallel to the filter element extending and opposing flow components.
  • this at least one closed flow circulation is advantageously produced by the fact that an inflow flow of the unfiltered material inside the filter unit undergoes positive guidance from a foot region to a head region, ie is forcibly directed into this head region.
  • the inlet flow of the unfiltered material in the foot region generates a sidestream, whereby the so-called Venturi effect is used.
  • the Venturi effect is based on increasing the flow rate of the unfiltrate in a nozzle area in the foot area, so that the associated increase in the rate of unfiltered fluid is accompanied by a simultaneous pressure drop in accordance with Bernoulli's law.
  • additional outlet openings along the course of the main line for an additional outlet of the unfiltered material on its way from the foot to the head area and the realized there realized outlet with opposite distributor cone.
  • the total cross-section of the outlet openings over the course of the main line is usually so dimensioned that a maximum of 20 vol .-% of the unfiltered leave the main line on this way at all or can leave, so that still the majority of the inlet flow, ie 80 vol .-% or more, forcibly conveyed into the head portion of the filter unit and opposite to the outlet meets the distributor cone.
  • the distributor cone is aligned with its cone tip in the direction of the outlet of the main line.
  • the distributor cone advantageously has a mantle surface which is composed of (usually four) pyramid side surfaces.
  • the pyramid surfaces of the jacket surface of the distributor cone are helical around one Axis wound through the apex of the cone.
  • the mostly cylindrical inlet flow of the unfiltered material exiting the outlet of the main conduit opposite the distributor cone in the head region of the filter unit is not only radially spread by the distributor cone, but receives another component of motion in the tangential direction through the helix about the axis through the cone tip spiral pyramid faces. This results in a certain twist, with which the inlet flow in the head region of the filter unit impinges against the dividing wall and is reflected by this into the interior of the filter unit or of the filter vessel.
  • the unfiltered material in addition to the inlet is additionally supplied via at least one annular channel and / or a spray ring and / or a foot inlet of the filter unit.
  • This additional ring channel in addition to the main line is arranged regularly below the filter element or the plurality of filter elements in the interior of the filter unit.
  • the ring channel is connected to the inlet.
  • the spray ring is also supplied with the unfiltered material via the inlet.
  • the annular channel usually has radially arranged openings. Through these openings, the unfiltered material can emerge laterally and optionally upwards / downwards, so that an additional turbulence of the unfiltered material in the interior of the filter unit or of the filter vessel is achieved as a result of the arrangement of the annular channel below the individual filter elements.
  • the spray ring can additionally be provided in the head area of the filter unit. Also this spraying ring is - like the main, the
  • the spray ring is used as a supplementary unfiltrate inlet, the unfiltrate flow leaving it being partially directed counter to that flow leaving the main pipeline.
  • the spray ring takes over - as the foot inlet - an additional function. Because with the help of Sprinninginges the interior of the filter unit or the filter tank can be advantageously cleaned. Because such a cleaning process as well as the
  • both the foot inlet and the spray ring during this phase can be used advantageously and according to the invention as additional non-filtrate inlets.
  • the main line and / or the annular channel and / or the spray ring and / or the boss are each equipped with adjusting means to adjust the volume of unfiltrate guided in each case in the interior variable.
  • These adjustment means may each be a control flap.
  • the volume flows in the main line, in the annular channel, in the spray ring and finally by the foot inlet of the unfiltered variable, for example, periodically variable can be set. This may be monitored by a control unit which acts on the individual adjustment means accordingly.
  • the entire volume flow is distributed at the inlet to the main line, the annular channel, the spray ring and finally the foot inlet.
  • the main line and the additional annular channel are designed and arranged so that a subsequent cleaning and discharge of the filter cake and thus the filter aid is not hindered.
  • the filter unit or the filter vessel can thus be completely and completely empty, and usually via the foot inlet, which in this case acts as a drain.
  • the inlet for the non-filtrate is closed in order to avoid a mixing of the successive unfiltrates as far as possible.
  • FIG. 2 shows the object according to FIG. 1 in a plan view from the direction X.
  • a device for precoat filtration of fluids is shown, especially of beverages and here in particular of beer.
  • the apparatus initially has an inlet 1 or unfiltered inlet 1, a filter unit 2 and a filtrate outlet 3 and finally a filtrate outlet 4.
  • the unfiltered inlet 1 and the filtrate outlet 3 are in the present case designed as a ring line 1, 3, which of course is not mandatory is. That is, a part of the filtrate leaving the filter unit 2 is returned to the unfiltrate inlet 1 and a portion of the filtrate leaves the device on the filtrate 4, for example, to be filled.
  • the Unfiltrateinlauf 1 in the filter unit 2 and the circulation of the non-filtrate provides a pump. 5
  • the unfiltered material fed into the filter unit 2 via the non-filtrate inlet 1 in the foot region is filtered with the aid of several filter elements 6 inside the filter unit.
  • These filter elements 6 are in the exemplary embodiment and not restrictive to so-called filter candles or slit filter candles which are mounted hanging on a partition wall 7 between a non-filtrate 2a and a filtrate 2b.
  • the filter elements 6 and filter candles form a total of a tube bundle, which is arranged annularly compared to an axis A. Opposite this axis A designed as a filter vessel filter unit 2 is designed rotationally symmetrical.
  • the inlet 1 or the infiltration inlet 1 opens into a main line 8 in the interior of the filter vessel or filter unit 2, which extends from a foot region to the top region of the filter unit 2.
  • a main line 8 in the interior of the filter vessel or filter unit 2, which extends from a foot region to the top region of the filter unit 2.
  • an inlet flow of the unfiltered material inside the filter unit 2 undergoes positive guidance from the foot region to the head region.
  • the unfiltered product introduced into the filter unit 2 via the nonfiltrate inlet 1 and the main line 8 leaves the main line 8 in the head region of the filter unit 2 via an outlet 9 of the main line 8.
  • a distributor cone 10 is connected to the dividing wall 7, with its outlet Cone tip 11 pointing in the direction of the outlet 9.
  • This special flow path of the unfiltered material within the filter unit 2 is caused on the one hand by the already mentioned distributor cone 10 in the head region of the filter unit 2. Because the fact that the distributor cone 10 points with its apex 11 on the outlet 9 of the main line 8, which is the Main line 8 via the outlet 9 leaving unfiltrate of a cylindrical in a radial course along the partition wall 7 is deflected.
  • the distribution cone 10 is equipped with a specially designed mantle surface 12 to the other, which is shown in FIG. 2 composed of a total of four pyramid side surfaces 12a to 12d.
  • these pyramid side surfaces 12a to 12d are helically wound around the axis A, whereby a swirl is additionally impressed on the flow of unfiltrate or the inlet flow of the unfiltrate in the head region of the filter unit 2. That is, along the partition wall 7 extending flow trajectories do not run radially, but rather curved, as shown in FIG. 2 by way of example by way of drawing. It is thereby achieved that ultimately the two flow circulations indicated in FIG. 1 rotate about the axis A, which causes a particularly effective mixing of the unfiltrate in the interior of the filter unit 2.
  • the main line 8 is equipped along its course with outlet openings 13.
  • the composite cross section of these outlet openings 13 for the unfiltered material is dimensioned such that as a rule not more than 20% by volume of the unfiltrate transferred via the non-filtrate inlet 1 into the main line 8 leaves the main line 8 at this point. This ensures that the majority of unfiltrate forcibly reaches the head region of the filter vessel or filter unit 2 and the outlet 9 there, namely regularly 80% by volume or more.
  • a nozzle 14 is provided in the main line 8, which is located in the foot region of the filter unit 2. Since the main line 8 or its inlet 15 has an expansion opposite the nozzle, unfiltrate can flow laterally into the annular gap formed between the nozzle 14 and the inlet 15 of the main line 8 Side inlet 14, 15 enter. This process is accelerated by the Venturi effect or the law of Bernoulli.
  • annular channel 16 below the individual filter elements 6 in the interior of the filter unit 2.
  • the annular channel 16 is shown in FIG. 2 connected via at least one radial feed line 17 to a riser 18, which in turn is connected to the unfiltrate inlet 1.
  • Predominantly radially arranged openings 19 in the annular channel 16 ensure that the unfiltrate entering the annular channel 16 exits laterally from the annular channel 16 and optionally upwards and / or downwards, as arrows in FIG. 1 indicate.
  • the spray ring 20 in the head region of the filter unit 2 for a supply of the unfiltered into the interior of the filter unit 2.
  • the spray ring 20 is connected to the Unfiltrateinsburg 1, namely via the riser 18.
  • the filtration Sprating 20 is usually used for internal cleaning of the filter unit 2 and this acted upon with a cleaning medium, which also ensures that the spent filter cake is removed from the filter elements or filter cartridges 6.
  • a similar double function ultimately takes over a foot inlet 21, via which the non-filtrate is supplied in addition to the main line 8, the annular channel 16 and the spray ring 20 of the filter unit 2. Because in addition to the supply of unfiltered theticianeinlauf 21 functions after completion of the filtration as a deduction for any filter cake residues or contamination before a grade change is made.
  • the individual volume flows via the four supply lines for the unfiltered material in the exemplary embodiment, ie the unfiltered inlet or inlet 1 in conjunction with the main line 8, the annular channel 16, the spray ring 20 and finally the foot inlet 21 can optionally and independently of each other pretend ,
  • the main line 8, the annular channel 16, the spray ring 20 and finally the foot inlet 21 each adjusting 22 in the form of control valves 22 assigned.
  • These control valves 22 can be acted upon individually or together taken via a control unit, not shown, and opened or closed accordingly.
  • the individual volume flows through the main line 8, the central annular channel 16, the spray ring 20 and finally the foot inlet 21 can be set independently and, of course, periodically. A uniform change in the volume flows is conceivable.

Landscapes

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

Abstract

La présente invention concerne un procédé et un dispositif de filtration de fluides sur précouche, en particulier de boissons comme par exemple de la bière. Une substance non filtrée est amenée par au moins une entrée (1) dans une unité filtrante (2) et est filtrée au moyen d'au moins un élément filtrant (6) disposé dans l'unité filtrante (2). Selon l'invention, la substance non filtrée est déviée à l'intérieur de l'unité filtrante (2) par des moyens de direction (8, 10) dans au moins un circuit d'écoulement fermé avec deux ou plusieurs composantes d'écoulement courant parallèlement à l'élément filtrant (6) et opposées les unes aux autres.
PCT/EP2009/008420 2008-12-17 2009-11-26 Procédé et dispositif de filtration de fluides sur précouche Ceased WO2010075916A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008062380.6 2008-12-17
DE102008062380A DE102008062380A1 (de) 2008-12-17 2008-12-17 Verfahren und Vorrichtung zur Anschwemmfiltration von Fluiden

Publications (1)

Publication Number Publication Date
WO2010075916A1 true WO2010075916A1 (fr) 2010-07-08

Family

ID=41571316

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/008420 Ceased WO2010075916A1 (fr) 2008-12-17 2009-11-26 Procédé et dispositif de filtration de fluides sur précouche

Country Status (2)

Country Link
DE (1) DE102008062380A1 (fr)
WO (1) WO2010075916A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114405275A (zh) * 2022-01-26 2022-04-29 天津科技大学 一种啤酒过滤设备及过滤方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015112270B4 (de) * 2015-07-28 2025-12-18 Bucher Denwel Gmbh Verfahren und Vorrichtung zur Extraktion von Aromastoffen aus in einer Suspension enthaltenen pflanzlichen Aromaträgern in einem Festbett

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB242383A (en) * 1924-09-03 1925-11-12 Louis David Mills Process of and apparatus for precipitating and filtering
US4872981A (en) * 1988-01-07 1989-10-10 Hobson Jr Russell Split inlet for filter
GB2383001A (en) * 2001-12-12 2003-06-18 Shih-Chang Chang Filter with means for retarding cake formation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2179573A1 (en) * 1972-04-10 1973-11-23 Madern Jean Pierre Water treatment ion-exchange vessel - continuously regrades resin bed by circulating resin material
CH675365A5 (fr) * 1988-08-09 1990-09-28 Asea Brown Boveri
DE19804882A1 (de) 1998-02-09 1999-08-12 Herzog Stefan Filterhilfsmittel
DE20122045U1 (de) 2001-03-21 2004-01-15 Anton Steinecker Maschinenfabrik Gmbh Anschwemmfilter
DE20115324U1 (de) 2001-09-17 2003-02-20 Anton Steinecker Maschinenfabrik GmbH, 85356 Freising Einlaufverteiler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB242383A (en) * 1924-09-03 1925-11-12 Louis David Mills Process of and apparatus for precipitating and filtering
US4872981A (en) * 1988-01-07 1989-10-10 Hobson Jr Russell Split inlet for filter
GB2383001A (en) * 2001-12-12 2003-06-18 Shih-Chang Chang Filter with means for retarding cake formation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114405275A (zh) * 2022-01-26 2022-04-29 天津科技大学 一种啤酒过滤设备及过滤方法
CN114405275B (zh) * 2022-01-26 2024-01-23 天津科技大学 一种啤酒过滤设备及过滤方法

Also Published As

Publication number Publication date
DE102008062380A1 (de) 2010-07-08

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