CH607753A5 - Process for removing filter cake - Google Patents

Process for removing filter cake

Info

Publication number
CH607753A5
CH607753A5 CH617277A CH617277A CH607753A5 CH 607753 A5 CH607753 A5 CH 607753A5 CH 617277 A CH617277 A CH 617277A CH 617277 A CH617277 A CH 617277A CH 607753 A5 CH607753 A5 CH 607753A5
Authority
CH
Switzerland
Prior art keywords
filter
individual
filter cake
backwashing
hoses
Prior art date
Application number
CH617277A
Other languages
German (de)
Inventor
Hans Dr Ing Mueller
Original Assignee
Chemap Ag
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 Chemap Ag filed Critical Chemap Ag
Priority to CH617277A priority Critical patent/CH607753A5/en
Priority to NL7708810A priority patent/NL167857C/en
Priority to US05/832,979 priority patent/US4163724A/en
Priority to FR7727937A priority patent/FR2364680A1/en
Priority to IT27562/77A priority patent/IT1087711B/en
Priority to DE2741639A priority patent/DE2741639C2/en
Priority to GB38800/77A priority patent/GB1584312A/en
Priority to JP52111482A priority patent/JPS5836611B2/en
Publication of CH607753A5 publication Critical patent/CH607753A5/en

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
    • B01D29/50—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
    • B01D29/62—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
    • 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
    • B01D2201/04—Supports for the filtering elements
    • B01D2201/0469—Filter tubes connected to collector tubes
    • B01D2201/0484—Filter tubes connected to collector tubes suspended from collector tubes 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
    • B01D2201/28—Position of the filtering element
    • B01D2201/287—Filtering elements with a vertical or inclined rotation or symmetry axis

Landscapes

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

Abstract

This process serves for removing the filter cake from tubular filter elements which are filled in the interior with filler material. In this case, individual groups of filter elements, for more effective cleaning, are backwashed in individual groups one after the other in time.

Description

  

  
 

**WARNUNG** Anfang DESC Feld konnte Ende CLMS uberlappen **.

 



   PATENTANSPRUCH
Verfahren zur Entfernung des Filterkuchens von schlauchförmigen Filterelementen, welche an ihrer unteren Seite verschlossen und an ihrer befestigten Oberseite offen sind und deren Innenraum mit Füllmaterial gefüllt ist, dadurch gekennzeichnet, dass einzelne Gruppen dieser Filterelemente bei der Rückspülung in zeitlichen Abständen hintereinander beschickt werden.



   Die Erfindung betrifft ein Verfahren zur Entfernung des Filterkuchens von einem schlauchförmigen Filterelement in einem Druckfilterkessel.



   Nach dem Schweizer Patent Nr. 604 823 ist ein Filterelement für Kesseldruckfilter bekannt, das aus einem schlauchförmigen Filtermittel besteht, welches an seiner unteren Seite verschlossen und an seiner befestigten Oberseite offen ist und dessen Innenraum mit losem Füllmaterial beschickt ist.



   Bei dieser Konstruktion sind die einzelnen schlauchförmigen Filterelemente reihenweise oder paarweise befestigt.



  Ihre einzelnen Austrittsöffnungen werden in einer Filtratsammelleitung zusammengefasst. Durch dieses Sammelrohr wird das Filtrat darin aus dem Filter abgeführt.



   Beim Rückspülen mit Flüssigkeit oder Gas wird das Spülmedium vom Sammelrohr auf die einzelnen Schläuche aufgeteilt, wobei jeder Filterschlauch nur einen geringen Anteil davon erhält, der auch noch abhängig vom Druckabfall bzw.



  der Entfernung von der Sammelleitung ist. Dadurch kann es vorkommen, dass der Filterkuchen nicht gleichmässig gut von den Schläuchen entfernt wird.



   Aufgabe der Erfindung ist es nun, ein Verfahren zu schaffen, das es ermöglicht, der einzelnen Kerze eine grössere Spülmittelmenge zuzuführen.



   Diese Aufgabe wird erfindungsgemäss durch ein Verfahren gelöst, das dadurch gekennzeichnet ist, dass einzelne Grup pen dieser Filterelemente bei der Rückspülung in zeitlichen Abständen hintereinander beschickt werden.



   Unter einzelnen Gruppen sind beispielsweise die herausnehmbaren Einsätze zu verstehen, auf welchen die Filterschläuche befestigt sind. Diese Einsätze sind normalerweise an die Sammelleitung angeschlossen. Jede solche Reihe kann mit einem automatisch arbeitenden Ventil versehen werden, das eine Rückspülung der Filterschläuche in einer Kadenz von beispielsweise   1020    Sekunden zulässt.



   Durch diese Verfahrensweise kommt aus der Sammelleitung, mit gleicher Anschlussmenge an Spülmedium, eine viel grössere Menge dem einzelnen Filterschlauch zu. Auch fällt so der Filterkuchen nicht von allen Schläuchen gleichzeitig ab, sondern gruppenweise, was für den Austrag von Vorteil ist. 



  
 

** WARNING ** Beginning of DESC field could overlap end of CLMS **.

 



   PATENT CLAIM
A method for removing the filter cake from tubular filter elements which are closed on their lower side and open on their attached top and whose interior is filled with filler material, characterized in that individual groups of these filter elements are charged one after the other during backwashing.



   The invention relates to a method for removing the filter cake from a tubular filter element in a pressure filter vessel.



   According to Swiss Patent No. 604 823, a filter element for boiler pressure filters is known which consists of a tubular filter medium which is closed on its lower side and open on its fixed upper side and the interior of which is filled with loose filler material.



   In this construction, the individual tubular filter elements are attached in rows or in pairs.



  Their individual outlet openings are combined in a filtrate collecting line. The filtrate is discharged from the filter through this collecting pipe.



   When backwashing with liquid or gas, the flushing medium is divided from the collecting pipe to the individual hoses, whereby each filter hose only receives a small proportion of it, which also depends on the pressure drop or the pressure drop.



  the distance from the manifold. This can mean that the filter cake is not removed evenly from the hoses.



   The object of the invention is to create a method which makes it possible to supply a larger amount of detergent to the individual candle.



   According to the invention, this object is achieved by a method which is characterized in that individual groups of these filter elements are loaded one after the other during backwashing.



   Individual groups are to be understood as meaning, for example, the removable inserts on which the filter bags are attached. These inserts are usually connected to the manifold. Each such row can be provided with an automatically operating valve that allows backwashing of the filter bags in a rate of, for example, 1020 seconds.



   This procedure results in a much larger amount of the individual filter hose coming from the collecting line with the same connection amount of flushing medium. Also, the filter cake does not fall off all the hoses at the same time, but in groups, which is advantageous for discharge.

Claims (1)

PATENTANSPRUCH Verfahren zur Entfernung des Filterkuchens von schlauchförmigen Filterelementen, welche an ihrer unteren Seite verschlossen und an ihrer befestigten Oberseite offen sind und deren Innenraum mit Füllmaterial gefüllt ist, dadurch gekennzeichnet, dass einzelne Gruppen dieser Filterelemente bei der Rückspülung in zeitlichen Abständen hintereinander beschickt werden. PATENT CLAIM A method for removing the filter cake from tubular filter elements which are closed on their lower side and open on their attached top and whose interior is filled with filler material, characterized in that individual groups of these filter elements are charged one after the other during backwashing. Die Erfindung betrifft ein Verfahren zur Entfernung des Filterkuchens von einem schlauchförmigen Filterelement in einem Druckfilterkessel. The invention relates to a method for removing the filter cake from a tubular filter element in a pressure filter vessel. Nach dem Schweizer Patent Nr. 604 823 ist ein Filterelement für Kesseldruckfilter bekannt, das aus einem schlauchförmigen Filtermittel besteht, welches an seiner unteren Seite verschlossen und an seiner befestigten Oberseite offen ist und dessen Innenraum mit losem Füllmaterial beschickt ist. According to Swiss Patent No. 604 823, a filter element for boiler pressure filters is known which consists of a tubular filter medium which is closed on its lower side and open on its fixed upper side and the interior of which is filled with loose filler material. Bei dieser Konstruktion sind die einzelnen schlauchförmigen Filterelemente reihenweise oder paarweise befestigt. In this construction, the individual tubular filter elements are attached in rows or in pairs. Ihre einzelnen Austrittsöffnungen werden in einer Filtratsammelleitung zusammengefasst. Durch dieses Sammelrohr wird das Filtrat darin aus dem Filter abgeführt. Their individual outlet openings are combined in a filtrate collecting line. The filtrate is discharged from the filter through this collecting pipe. Beim Rückspülen mit Flüssigkeit oder Gas wird das Spülmedium vom Sammelrohr auf die einzelnen Schläuche aufgeteilt, wobei jeder Filterschlauch nur einen geringen Anteil davon erhält, der auch noch abhängig vom Druckabfall bzw. When backwashing with liquid or gas, the flushing medium is divided from the collecting pipe to the individual hoses, whereby each filter hose only receives a small proportion of it, which also depends on the pressure drop or the pressure drop. der Entfernung von der Sammelleitung ist. Dadurch kann es vorkommen, dass der Filterkuchen nicht gleichmässig gut von den Schläuchen entfernt wird. the distance from the manifold. This can mean that the filter cake is not removed evenly from the hoses. Aufgabe der Erfindung ist es nun, ein Verfahren zu schaffen, das es ermöglicht, der einzelnen Kerze eine grössere Spülmittelmenge zuzuführen. The object of the invention is to create a method which makes it possible to supply a larger amount of detergent to the individual candle. Diese Aufgabe wird erfindungsgemäss durch ein Verfahren gelöst, das dadurch gekennzeichnet ist, dass einzelne Grup pen dieser Filterelemente bei der Rückspülung in zeitlichen Abständen hintereinander beschickt werden. According to the invention, this object is achieved by a method which is characterized in that individual groups of these filter elements are loaded one after the other during backwashing. Unter einzelnen Gruppen sind beispielsweise die herausnehmbaren Einsätze zu verstehen, auf welchen die Filterschläuche befestigt sind. Diese Einsätze sind normalerweise an die Sammelleitung angeschlossen. Jede solche Reihe kann mit einem automatisch arbeitenden Ventil versehen werden, das eine Rückspülung der Filterschläuche in einer Kadenz von beispielsweise 1020 Sekunden zulässt. Individual groups are to be understood as meaning, for example, the removable inserts on which the filter bags are attached. These inserts are usually connected to the manifold. Each such row can be provided with an automatically operating valve that allows backwashing of the filter bags in a rate of, for example, 1020 seconds. Durch diese Verfahrensweise kommt aus der Sammelleitung, mit gleicher Anschlussmenge an Spülmedium, eine viel grössere Menge dem einzelnen Filterschlauch zu. Auch fällt so der Filterkuchen nicht von allen Schläuchen gleichzeitig ab, sondern gruppenweise, was für den Austrag von Vorteil ist. **WARNUNG** Ende CLMS Feld konnte Anfang DESC uberlappen**. This procedure results in a much larger amount of the individual filter hose coming from the collecting line with the same connection amount of flushing medium. Also, the filter cake does not fall off all the hoses at the same time, but in groups, which is advantageous for the discharge. ** WARNING ** End of CLMS field could overlap beginning of DESC **.
CH617277A 1976-09-16 1977-05-18 Process for removing filter cake CH607753A5 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CH617277A CH607753A5 (en) 1977-05-18 1977-05-18 Process for removing filter cake
NL7708810A NL167857C (en) 1976-09-16 1977-08-10 FILTERING DEVICE.
US05/832,979 US4163724A (en) 1976-09-16 1977-09-13 Pressure filter and process for cleaning it
FR7727937A FR2364680A1 (en) 1976-09-16 1977-09-15 FILTRATION DEVICE AND METHOD
IT27562/77A IT1087711B (en) 1976-09-16 1977-09-15 DEVICE FOR FILTRATION OF FLUID LIQUIDS
DE2741639A DE2741639C2 (en) 1976-09-16 1977-09-15 Pressure vessel filter for separating solids from liquids
GB38800/77A GB1584312A (en) 1976-09-16 1977-09-16 Filtration of fluid media
JP52111482A JPS5836611B2 (en) 1976-09-16 1977-09-16 pressure filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH617277A CH607753A5 (en) 1977-05-18 1977-05-18 Process for removing filter cake

Publications (1)

Publication Number Publication Date
CH607753A5 true CH607753A5 (en) 1978-10-31

Family

ID=4305403

Family Applications (1)

Application Number Title Priority Date Filing Date
CH617277A CH607753A5 (en) 1976-09-16 1977-05-18 Process for removing filter cake

Country Status (1)

Country Link
CH (1) CH607753A5 (en)

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