WO2004020071A1 - Procede pour nettoyer un filtre - Google Patents

Procede pour nettoyer un filtre Download PDF

Info

Publication number
WO2004020071A1
WO2004020071A1 PCT/EP2003/004318 EP0304318W WO2004020071A1 WO 2004020071 A1 WO2004020071 A1 WO 2004020071A1 EP 0304318 W EP0304318 W EP 0304318W WO 2004020071 A1 WO2004020071 A1 WO 2004020071A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
cleaning
cleaning device
liquid
dirt
Prior art date
Application number
PCT/EP2003/004318
Other languages
German (de)
English (en)
Inventor
Thomas Piller
Original Assignee
Piller Entgrattechnik 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 Piller Entgrattechnik Gmbh filed Critical Piller Entgrattechnik Gmbh
Publication of WO2004020071A1 publication Critical patent/WO2004020071A1/fr

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
    • B01D29/114—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
    • B01D29/62—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
    • B01D29/6438—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element nozzles
    • B01D29/6446—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element nozzles with a rotary 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
    • B01D29/682—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with a rotary 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
    • B01D29/684—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles 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
    • B01D29/686—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with a combination of movements with respect to the filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/58—Power supply means for regenerating the filter
    • B01D2201/583—Power supply means for regenerating the filter using the kinetic energy of the fluid circulating in the filtering device

Definitions

  • the invention relates to a method for cleaning a filter through which a contaminated liquid flows, by means of a cleaning liquid used in the countercurrent direction to remove the dirt deposited on the outside of the filter.
  • Bag and tube filters are used for filtering contaminated liquids. There are many applications in industry, with pore size and retention capacity playing a particularly important role. The selection of the filter type is essentially based on these criteria. If the retention capacity is too small, a cheap bag filter is often used, which can easily be replaced after a short or long time.
  • a backwashing method is known from DE 195 23 463 A1, in which a portion of the filtered liquid from the interior of the tubular filter, which is under a low pressure, is again passed through a changing portion of the filter to the outside and takes on the atmospheric pressure. This can be done by moving an axial channel around the filter that is under atmospheric pressure. The part of the returned filtered liquid pushes off the dirt adhering to the outside of the filter, which collects and is discharged in the lower area of the channel.
  • This backwash process can also be used with a fixed channel and a rotating filter.
  • This known backwashing method is limited in the application if it is a thick-walled tubular filter with a very small pore size and thus a large retention capacity. In such extreme conditions, it is usually unavoidable to replace the filter.
  • a cleaning device is axially adjusted in the interior of the sleeve-shaped filter through which the outside flows and which acts on the wall of the interior of the filter with high-pressure jets of a cleaning liquid and presses through the filter the dirt adhering to the outside thereof ,
  • the pressure of the high-pressure jets can be chosen so high that it can still exert a sufficient push-off force on the dirt adhering through the filter on the outside of the filter. Since this detachment is limited to a small filter area, the cleaning can also take place simultaneously with the filtering.
  • the area in the interior of the filter is determined by the movement of the cleaning device in the axial direction and in the circumferential direction.
  • the area to which the pressure is applied can also be achieved by simultaneously rotating the cleaning device with two diametrically arranged nozzles during the axial adjustment, or by only axially adjusting the cleaning device with two diametrically arranged nozzles, and that during the axial adjustment of the cleaning device Filter is rotated.
  • the number of nozzles on the cleaning device can also be smaller or larger. This depends on the size of the filter and the structure and the adjustment of the cleaning device and / or the filter.
  • the detachment of the dirt on the outside of the filter can be improved according to a further development in that with the axial adjustment of the cleaning device on the outside of the filter a washing device is axially adjusted, with which the outside of the filter is washed off the dirt by means of a washing jet. In this case, the detached dirt can additionally be forced downwards, ie in the direction of collection.
  • washing jet does not weaken the effect of the high-pressure jets too much, it can further be provided that a washing jet is selected which is weaker than the high-pressure jets of the cleaning liquid of the cleaning device or acts on the area offset from the high-pressure jets.
  • the filter is cleaned when the liquid to be cleaned is interrupted or switched off.
  • the operating mode can be adapted more easily to different difficult conditions.
  • an embodiment is advantageous which is characterized in that the pressure of the cleaning liquid and the washing liquid is made adjustable for the high-pressure jets and the washing jet. If a tubular filter is used which has a small pore size and a large retention capacity, the method according to the invention has proven particularly useful.
  • Fig. 1 shows schematically the cleaning of a stationary filter by means of an axially adjustable and rotating cleaning device
  • Fig. 2 schematically shows the cleaning of a rotary filter by means of its adjustable cleaning device in the interior.
  • a thick-walled tubular filter 10 is used, to which the liquid to be cleaned is fed on the outside and is filtered and discharged downward from the interior 11.
  • the liquid has a pressure that is sufficient to pass through the tubular filter 10.
  • the dirt is primarily deposited on the outside of the tubular filter 10. Small dirt particles also penetrate into the porous filter body, the pore size of which determines the size of the dirt particles to be filtered out. The degree of contamination of the liquid to be cleaned can be so great that the filter body clogs up and loses its filter properties. Care is therefore taken to ensure that this blockage not taking place. Therefore, the tube filter 10 is assigned an automatically operating cleaning device 20, which is fed with a high-pressure cleaning liquid 27.
  • This cleaning device 20 has two diametrically arranged nozzles 21 and 22 and, as the double arrow 30 shows, is axially adjusted in the interior 11 of the return filter 10 and is thereby set in rotation, as shown by the arrow 31.
  • the nozzles 21 and 22 direct high-pressure jets 23 and 25 onto the winding of the interior 11 of the tubular filter 10, so that this is fully acted upon both during the downward and upward movement of the cleaning device 20.
  • the high-pressure jets 23 and 24 have so much power that they are still sufficiently strong through the tubular filter 10 to push off adhering dirt from the outside of the tubular filter 10, even if the liquid to be cleaned is still there.
  • the cleaning device 20 can be continuously adjusted and rotated or the movement processes can also be repeated periodically. However, the high-pressure cleaning device can only be put into operation when the filtering is switched off. This depends on the given operating conditions of the filtering.
  • a washing device 25 can be axially adjusted and rotated, which acts on the outside of the tubular filter 10 with a washing jet 26, which at the same time also gives up a moving component downward to the loosened dirt ,
  • the dirt is collected in the lower area of the tubular filter 10 and removed.
  • the exemplary embodiment according to FIG. 2 has the same effect and can have the same variants between filtering and cleaning as the exemplary embodiment according to FIG. 1.
  • the only difference is that the cleaning device 20 and the washing device 25 only perform an axial downward and upward movement 30. To do this, however, the tubular filter 10 must perform its own rotary movement 40 so that the entire outside of the tubular filter 10 can be washed off the dirt by the washing device 25.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

La présente invention concerne un procédé pour nettoyer un filtre à travers lequel circule un liquide contaminé, au moyen d'un liquide de nettoyage utilisé en sens inverse du courant et conçu pour éliminer les contaminants déposés sur la face externe du filtre. Selon cette invention, un dispositif de nettoyage est installé en direction axiale, à l'intérieur du filtre en forme de manchon qui est traversé depuis l'extérieur. Ce dispositif de nettoyage projette sur la paroi de l'intérieur du filtre des jets sous haute pression d'un liquide de nettoyage et refoule ainsi à travers le filtre les contaminants adhérant à la face interne de celui-ci, ce qui permet de débarrasser en continu de toute accumulation de contaminants, même lors de la filtration, un filtre tubulaire à petits pores et à grande capacité de rétention.
PCT/EP2003/004318 2002-08-29 2003-04-25 Procede pour nettoyer un filtre WO2004020071A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10239693A DE10239693A1 (de) 2002-08-29 2002-08-29 Verfahren zum Reinigen eines Filters
DE10239693.0 2002-08-29

Publications (1)

Publication Number Publication Date
WO2004020071A1 true WO2004020071A1 (fr) 2004-03-11

Family

ID=31724153

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/004318 WO2004020071A1 (fr) 2002-08-29 2003-04-25 Procede pour nettoyer un filtre

Country Status (2)

Country Link
DE (1) DE10239693A1 (fr)
WO (1) WO2004020071A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011146676A3 (fr) * 2010-05-20 2012-01-12 Klein, David Procédé de nettoyage de filtre

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20041666A1 (it) * 2004-08-25 2004-11-25 Valerio Vernocchi Filtro autopulente con rete filtrante munita di protezione

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3469705A (en) * 1967-03-17 1969-09-30 Robert S Thomas Means for cleaning screens in place in a pipeline
US3511374A (en) * 1968-11-01 1970-05-12 California & Hawaiian Sugar Co Screening device
US4284500A (en) * 1980-01-18 1981-08-18 Tenneco Chemicals, Inc. In-line pressurized wet screening apparatus
EP0240220A2 (fr) * 1986-03-25 1987-10-07 Dowty Mining Machinery Limited Systèmes de filtration de fluides
US4762615A (en) * 1986-08-15 1988-08-09 Mordeki Drori Semi-automatic fluid filter
DE3920097A1 (de) * 1988-07-11 1990-02-22 Sartorius Gmbh Vorrichtung zur filtration von mit partikeln belasteten fluessigkeiten
EP0450170A2 (fr) * 1990-04-06 1991-10-09 R. Späne Gmbh Chem. Techn Produkte Dispositif de régénération de puits

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3537138A1 (de) * 1985-10-18 1987-04-23 Henkel Kgaa Verfahren und vorrichtung zum reinigen eines filterbeutels
DE19523463B4 (de) * 1995-06-28 2004-09-09 Mahle Filtersysteme Gmbh Rückspülbares Filter für Flüssigkeiten
DE20008957U1 (de) * 2000-05-18 2000-09-21 Faudi Filtersysteme Gmbh Vorrichtung zum Reinigen von Filtern

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3469705A (en) * 1967-03-17 1969-09-30 Robert S Thomas Means for cleaning screens in place in a pipeline
US3511374A (en) * 1968-11-01 1970-05-12 California & Hawaiian Sugar Co Screening device
US4284500A (en) * 1980-01-18 1981-08-18 Tenneco Chemicals, Inc. In-line pressurized wet screening apparatus
EP0240220A2 (fr) * 1986-03-25 1987-10-07 Dowty Mining Machinery Limited Systèmes de filtration de fluides
US4762615A (en) * 1986-08-15 1988-08-09 Mordeki Drori Semi-automatic fluid filter
DE3920097A1 (de) * 1988-07-11 1990-02-22 Sartorius Gmbh Vorrichtung zur filtration von mit partikeln belasteten fluessigkeiten
EP0450170A2 (fr) * 1990-04-06 1991-10-09 R. Späne Gmbh Chem. Techn Produkte Dispositif de régénération de puits

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011146676A3 (fr) * 2010-05-20 2012-01-12 Klein, David Procédé de nettoyage de filtre
CN103140268A (zh) * 2010-05-20 2013-06-05 隆·塔尔 过滤器清洗方法
CN103140268B (zh) * 2010-05-20 2015-12-02 隆·塔尔 过滤器清洗方法
KR101801564B1 (ko) * 2010-05-20 2018-01-30 발라스트마린 엘티디. 필터 세척 방법
US10076715B2 (en) 2010-05-20 2018-09-18 Ballastmarine Ltd. Filter cleaning method

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Publication number Publication date
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