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WO1991008035A1 - Dispositif de deshydratation de boues - Google Patents

Dispositif de deshydratation de boues Download PDF

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Publication number
WO1991008035A1
WO1991008035A1 PCT/AT1990/000113 AT9000113W WO9108035A1 WO 1991008035 A1 WO1991008035 A1 WO 1991008035A1 AT 9000113 W AT9000113 W AT 9000113W WO 9108035 A1 WO9108035 A1 WO 9108035A1
Authority
WO
WIPO (PCT)
Prior art keywords
separation chamber
wall
piston
filter
annular
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/AT1990/000113
Other languages
German (de)
English (en)
Inventor
Horst Guggemos
Yousef Haririan
Edwin Haslauer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO1991008035A1 publication Critical patent/WO1991008035A1/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
    • 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
    • B01D29/117—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 outward 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
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
    • B01D29/6484—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a translatory movement with respect to the filtering element
    • 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
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
    • 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
    • B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
    • B01D29/80—Handling the filter cake in the filter for purposes other than for regenerating for drying
    • B01D29/82—Handling the filter cake in the filter for purposes other than for regenerating for drying by compression
    • B01D29/822—Handling the filter cake in the filter for purposes other than for regenerating for drying by compression using membranes
    • 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
    • B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
    • B01D29/80—Handling the filter cake in the filter for purposes other than for regenerating for drying
    • B01D29/82—Handling the filter cake in the filter for purposes other than for regenerating for drying by compression
    • B01D29/824—Handling the filter cake in the filter for purposes other than for regenerating for drying by compression using pistons

Definitions

  • the invention relates to a device for dewatering sludges, slurries containing solids or the like. or for separating mixed solid and liquid media, with an annular separating chamber, the outer wall of which is designed as a filter wall, the inner wall of the separating chamber being surrounded by an expandable membrane impermeable to the filtrate, with discharge lines or drainage openings for the separated fluid, with pressure fluid supply lines opening between the inner wall and the membrane for expanding and pressurizing the membrane and with filter cleaning devices which can be moved over the surfaces of the filter wall.
  • Such devices for dewatering are known in a similar manner for example from DE-OS 22 51 265 and are used for dewatering sludges, 2UR separation of solid and liquid media for the purification of waste water, in the industry, for example for separating suspensions, especially fiber suspensions od .
  • Drainage devices are also known from WO 88/07501 and DE-OS 36 15 681.
  • the aim of the invention is to create a simply constructed and economically operated separating device in which the supply of the medium is quick and easy and which is constructed to be reliable.
  • This object is achieved according to the invention in a device of the type mentioned at the outset in that, as a supply device for the sludge or media to be introduced into the separation chamber, above or outside the separation chamber an adjustable feed or in a jacket which is in particular tightly connected to the outer wall of the separation chamber Locking piston is provided, by the movement of which up to the entrance of the separation chamber the sludge or the media can be fed to the annular space of the separation chamber or the annular space can be locked.
  • the configuration according to the invention ensures that the sludge is rapidly fed to the separation chamber, the liquid medium being squeezed out, if appropriate, simultaneously with the feed.
  • This device can be built very robustly and enables a quick separation of the liquid medium.
  • the piston has a pressure plate which carries flap valves which can be adjusted in the closed position by the counterpressure of the sludge or the media when the piston moves in the direction of the separation chamber. To this Mud or the like can move away from the separation chamber when the piston moves. move through the flap valves to the separation chamber, while when the piston is moving towards the separation chamber, the flap valves close due to the pressure in front of the piston and allow the piston to be pressed. In this way, very rapid filling of the space in front of the piston or the separation chamber is possible in particular by repeatedly moving the piston up and down.
  • a structure with a side wall surface connects to the cover plate and into the space delimited by the side wall surface and the casing a peripheral ring-shaped extension or cylinder ring carried by the pressure plate can be inserted, with which the filler-side end face of the Tren ⁇ hunt is lockable.
  • a construction is particularly simple in which it is provided that the filter wall of the annular space is extended in alignment with the casing and / or the inner wall is aligned with the side wall surface of the construction. This embodiment allows the ring-shaped extension to connect to or be connected to the pressure plate and to have at least one passage opening for the sludge or media in it.
  • a feed or closure piston adjustable in a jacket which is particularly tightly connected to the outer wall of the separation chamber, is provided by its movement until Entrance of the separation chamber, the sludge or the media can be fed to the annular space of the separation chamber or the annular space can be locked.
  • a certain pressure build-up can already be achieved in the annular space or in the opening chamber when the extension or the cylinder ring penetrates, at the same time the material separated from the separation chamber, lying in front of the pressure plate and not yet to be pressed out, through passage opening (s) and the bypass line can be returned to the unpressurized side of the piston and is made available again for the next operation.
  • the filter cleaning devices can have longitudinal webs guided by the guide webs. sen, which are connected to transverse webs or struts, in particular, in the form of a scraper knife, which bear against the filter wall. If the longitudinal webs are connected to or supported by the piston, the filter surfaces are cleaned each time the piston moves up and down. At the same time, however, it is also possible to provide a pressurized fluid, for example compressed air or pressurized water cleaning unit for the filter wall, with which the filter wall can be flowed from the outside to the inside.
  • a pressurized fluid for example compressed air or pressurized water cleaning unit for the filter wall, with which the filter wall can be flowed from the outside to the inside.
  • the filter cleaning devices support the discharge of the pressed material by crushing or crumbling it, after which it is discharged downward from the separation chamber.
  • the separation chamber is closed at the bottom by a closure device which can be swiveled downwards, for example hinged closure plates or flaps.
  • the shape of the annular separation chamber can be chosen almost arbitrarily: it is advantageously provided that the annular separation chamber has a round or polygonal cross section or that the separation chamber has a square or frustoconical cross section in a radial plane.
  • FIG.l shows schematically a section through an embodiment of a separation device according to the invention.
  • This opening device 1 advantageously has a cylindrical shape, the outer casing of this separating device being formed by a jacket 5 and an annular wall 27, which are connected to one another via flanges 28.
  • a further flange part 29 is provided on the jacket 5 in the upper area, with which the separating device 1 can be attached to or in the bottom area of a storage container 31, only indicated, into which sludge or media to be separated are introduced.
  • Legs for setting up the separating device are indicated at 50. Other types of installation or attachments are of course also possible.
  • a feed or closure piston 2 is arranged to be moved up and down according to arrow 32.
  • the piston 2 has a guide 33 with which it seals on a guide 15 by means of an elastic bellows 34 is movable. Drive devices for the piston 2 are not shown.
  • the guide 15 extends into a support frame with struts 35 which extend from a central longitudinal strut 36 and support a support wall 37. Pressure medium is introduced between the support wall 37 and an inner wall 7 surrounding it via pressure fluid supply lines 10.
  • the inner wall 7 is surrounded by the formation of an annular chamber 3 from an outer wall which is designed as a filter wall 6 provided with filter openings 38.
  • the filter wall 6 is surrounded by an annular wall 27 with the formation of a gap for draining off the filtrate to the drain openings 9.
  • the filter wall 6 is supported with supports 40 against the ring wall 27.
  • the annular separating chamber 3 is closed by means of flaps 4, which are pivotably mounted about a pivot point 41 on a frame 42 comprising the separating device 1.
  • the flaps 4 can be pivoted downward according to arrow 143, as a result of which the pressed material can be discharged from the annular separation chamber 3.
  • folding valves 21 can be arranged, which are evident in the direction of the separation chamber 3 due to the inflowing material and which are closed when the membrane 8 expands due to the pressure built up.
  • An annular structure 17 is attached to the cover plate 16 and has a side wall surface 18 which, like the casing 5, extends the filter wall 6 and the inner wall 7 of the separation chamber 3 upwards.
  • An annular extension 20 (FIG. 1, 2) or a cylinder ring 52 (FIG. 3, 4) carried by the piston or pressure plate 13 can be inserted into the space or annular gap 19 delimited by the casing 5 and the side wall surface 18.
  • the loading opening of the separation chamber 3 is released by raising the piston 2 beyond this annular gap.
  • the substance stored above the piston 2 can penetrate either directly into the separation chamber 3 itself or only into the prechamber formed before the piston 2 due to the force of gravity due to the folding valves 14 which open when it is raised.
  • the flap valves 14 close and there is a forced loading of the separation chamber 3 or already a certain pre-pressing and finally a closure of the separation chamber 3. This results in a uniform loading of the separation chamber 3, in particular the pulpy one Substances, favored.
  • the introduction process is controlled either by the stroke height of the piston 2 and / or by the number of strokes.
  • the movement of the piston 2 can be controlled, for example, by a control device, not shown, which comprises a computer with a program.
  • the pressure plate 13 carries, by means of a number of webs 51 distributed over its circumference, an advantageously hollow cylindrical ring 52 which fits into the annular space or annular gap 19.
  • the passage openings 53 between the webs 51 represent the passage openings for the material remaining in front of the pressure plate 13 to the bypass lines 25 when the access from the annular gap 19 has been closed by the cylinder ring (FIG. 4).
  • the number of bypass lines is variable.
  • the inner wall 7, perforated with through openings 43 for a pressure medium is covered with an elastically expandable membrane 8.
  • pressure medium can be pressed into the struts 35 with the pressure fluid supply lines 35 through the longitudinal strut 36 and, if appropriate, their extension 44 up or down to a pressure fluid source, not shown, according to the arrows 45, as a result of which the one in FIG Membrane 8 can be adjusted into a pressed position 8 'shown in dashed lines.
  • the expansion of the membrane takes place after the annular extension 20 or cylinder ring 52 has entered the annular gap 19 or the separation chamber 3 has been closed by the piston 2.
  • a pressure fluid supply for example compressed air or pressurized water
  • a pressure fluid supply for example compressed air or pressurized water
  • stripping devices can also be provided, which also serve to crush the pressed material.
  • the outer wall 6 consists of a plurality of filter wall parts 22.
  • the filter wall parts 22 are supported according to FIGS. 7 and 8 on supports 48, the guide webs Wear 23 with grooves in front of which slidably received longitudinal webs 11 which are connected to cross struts 12.
  • the cross struts 12 are designed as scraper blades movable over the filter wall 6; the longitudinal webs 11 are connected to the piston 2 or the pressure plate 13 or the ring-shaped extension 20 or cylinder ring 52 and move, and thus the doctor blades with the piston 2.
  • the protrusion 47 of the guide webs 23 weakens the pressed-out material or filter cake at these points, so that it breaks easily when the crossbars or struts 12 move and as crumbly material from the separation chamber 3 when the end plates or Flap 4 falls out.
  • the diameter of the jacket 5 and the diameter of the outer wall 6 can be the same; however, this is not absolutely necessary, e.g. the jacket 5 can have a larger diameter than the separation chamber 3.
  • the cross struts 12 which act as scraping knives, advantageously lie against the filter wall 6 under pretension and mechanically clean the filter surface.
  • a pressure medium source on the feed line 46 can also assist in the delivery of the broken press cake.
  • an individual segment or filter wall part 22 can also be pressure-cleaned, or damaged or blocked segments can be replaced.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Sludge (AREA)

Abstract

Un dispositif de déshydratation de boues comprend une chambre annulaire de séparation (3) dont la paroi extérieure constitue une paroi de filtrage (6) et dont la paroi intérieure (7) est entourée d'une membrane expansible (8) imperméable au filtrat. Le dispositif comprend en outre des conduits d'évacuation (9) du fluide séparé, des conduits d'amenée (10) d'un fluide sous pression qui s'ouvrent entre la paroi intérieure (7) et la membrane (8) afin d'exercer une pression sur la membrane (8) en vue de son expansion. Des organes mobiles (11, 12) de nettoyage du filtre sont agencés sur la surface de la paroi de filtrage. Afin d'introduire les boues dans la chambre de séparation (3), un piston d'amenée ou d'obturation (2) réglable dans une enveloppe (5) reliée de préférence de manière hermétique à la paroi extérieure de la chambre de séparation (3) est agencé au-dessus ou à l'extérieur de la chambre de séparation (3). Le déplacement du piston jusqu'à l'entrée de la chambre de séparation (3) permet d'introduire les boues ou milieux dans l'espace annulaire de la chambre de séparation (3) ou de fermer l'espace annulaire.
PCT/AT1990/000113 1989-12-01 1990-11-27 Dispositif de deshydratation de boues Ceased WO1991008035A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA2745/89 1989-12-01
AT2745/89A AT393118B (de) 1989-12-01 1989-12-01 Einrichtung zum entwaessern von schlaemmen

Publications (1)

Publication Number Publication Date
WO1991008035A1 true WO1991008035A1 (fr) 1991-06-13

Family

ID=3539627

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1990/000113 Ceased WO1991008035A1 (fr) 1989-12-01 1990-11-27 Dispositif de deshydratation de boues

Country Status (3)

Country Link
AT (1) AT393118B (fr)
AU (1) AU6902091A (fr)
WO (1) WO1991008035A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2140921A1 (fr) * 2008-06-24 2010-01-06 Falmer Investments Limited Filtre pour une machine de séchage de tissu
EP3838851A1 (fr) 2019-12-16 2021-06-23 Silva, José Oswaldo da Appareil et procédé de déshydratation et de compactage de boues, de déchets, de matériaux pâteux et de suspensions liquides

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE507791C2 (sv) * 1996-02-29 1998-07-13 Stigebrandt Ake Avvattningsanordning för satsvis avskijning av vätska från partikelbemängt slam
CN114293935B (zh) * 2021-12-31 2024-03-26 重庆大学 一种三相分离保压装置及其使用方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540586A (en) * 1968-05-09 1970-11-17 Holliday Co Ltd L B Filtration apparatus and method
DE2251265A1 (de) * 1972-10-19 1974-05-02 Rittershaus & Blecher Gmbh Hochdruck-grossfilter mit nachpressung des filterkuchens
DE3615681A1 (de) * 1986-05-09 1987-11-12 Seyer Hans Verfahren zum ausscheiden von feststoffen aus faekalschlamm und vorrichtung zur durchfuehrung des verfahrens
WO1988007501A1 (fr) * 1987-03-31 1988-10-06 Optimal Miljøteknik Aps Appareil de drainage de boue

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540586A (en) * 1968-05-09 1970-11-17 Holliday Co Ltd L B Filtration apparatus and method
DE2251265A1 (de) * 1972-10-19 1974-05-02 Rittershaus & Blecher Gmbh Hochdruck-grossfilter mit nachpressung des filterkuchens
DE3615681A1 (de) * 1986-05-09 1987-11-12 Seyer Hans Verfahren zum ausscheiden von feststoffen aus faekalschlamm und vorrichtung zur durchfuehrung des verfahrens
WO1988007501A1 (fr) * 1987-03-31 1988-10-06 Optimal Miljøteknik Aps Appareil de drainage de boue

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2140921A1 (fr) * 2008-06-24 2010-01-06 Falmer Investments Limited Filtre pour une machine de séchage de tissu
EP3838851A1 (fr) 2019-12-16 2021-06-23 Silva, José Oswaldo da Appareil et procédé de déshydratation et de compactage de boues, de déchets, de matériaux pâteux et de suspensions liquides

Also Published As

Publication number Publication date
ATA274589A (de) 1991-01-15
AT393118B (de) 1991-08-26
AU6902091A (en) 1991-06-26

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