ES481279A1 - Improvements in washable filters to countercurrent. (Machine-translation by Google Translate, not legally binding) - Google Patents

Improvements in washable filters to countercurrent. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES481279A1
ES481279A1 ES481279A ES481279A ES481279A1 ES 481279 A1 ES481279 A1 ES 481279A1 ES 481279 A ES481279 A ES 481279A ES 481279 A ES481279 A ES 481279A ES 481279 A1 ES481279 A1 ES 481279A1
Authority
ES
Spain
Prior art keywords
peripheral zone
countercurrent
translation
machine
legally binding
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.)
Expired
Application number
ES481279A
Other languages
Spanish (es)
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.)
Sulzer AG
Original Assignee
Sulzer AG
Sulzer Freres SA
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 Sulzer AG, Sulzer Freres SA filed Critical Sulzer AG
Publication of ES481279A1 publication Critical patent/ES481279A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
    • B01D24/12—Downward filtration, the filtering material being supported by pervious surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4626—Construction of spray heads specially adapted for regeneration of the filter material or for filtrate discharging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4631—Counter-current flushing, e.g. by air

Landscapes

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

Abstract

In a back-flushable filter, a granular filter material is heaped on a nozzle tray (11). During the filtration of contaminated liquids, accumulations of dirt which cannot be flushed out at normal back-flushing rates occur in the peripheral zone (16) means are therefore provided in the peripheral zone to increase the flow cross-section. This increases the amount of flushing water in the peripheral zone, as a result of which a higher local flow rate is achieved. The means are an increase in the number of nozzles (15) per unit area and/or in the flow cross-section of the individual nozzles in the peripheral zone.
ES481279A 1978-07-14 1979-06-05 Improvements in washable filters to countercurrent. (Machine-translation by Google Translate, not legally binding) Expired ES481279A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH764978A CH633971A5 (en) 1978-07-14 1978-07-14 Back-flushable filter

Publications (1)

Publication Number Publication Date
ES481279A1 true ES481279A1 (en) 1980-02-01

Family

ID=4328419

Family Applications (1)

Application Number Title Priority Date Filing Date
ES481279A Expired ES481279A1 (en) 1978-07-14 1979-06-05 Improvements in washable filters to countercurrent. (Machine-translation by Google Translate, not legally binding)

Country Status (4)

Country Link
CH (1) CH633971A5 (en)
ES (1) ES481279A1 (en)
FR (1) FR2430782A1 (en)
IT (1) IT1122060B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2485385A1 (en) * 1980-06-27 1981-12-31 Degremont BED FILTER OF GRANULAR MATERIALS FOR THE TREATMENT OF WATER, ESPECIALLY SEA WATER AND CORROSIVE LIQUIDS
ITMI20062045A1 (en) * 2006-10-24 2008-04-25 Danieli Off Mecc SAND FILTRATION DEVICE
EP2154114A1 (en) * 2008-07-23 2010-02-17 Nestec S.A. Water treatment unit for beverage production machine
CN105854367B (en) * 2016-05-13 2019-08-30 上海绩优机电股份有限公司 A kind of filtration system and filter method

Also Published As

Publication number Publication date
IT7924180A0 (en) 1979-07-09
CH633971A5 (en) 1983-01-14
FR2430782A1 (en) 1980-02-08
IT1122060B (en) 1986-04-23
FR2430782B3 (en) 1982-05-21

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970401