ES430422A1 - Filtration - Google Patents

Filtration

Info

Publication number
ES430422A1
ES430422A1 ES430422A ES430422A ES430422A1 ES 430422 A1 ES430422 A1 ES 430422A1 ES 430422 A ES430422 A ES 430422A ES 430422 A ES430422 A ES 430422A ES 430422 A1 ES430422 A1 ES 430422A1
Authority
ES
Spain
Prior art keywords
particles
bed
upper layer
layer
downward direction
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
ES430422A
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.)
BOC Group Ltd
Original Assignee
British Oxigen Ltd
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 British Oxigen Ltd filed Critical British Oxigen Ltd
Publication of ES430422A1 publication Critical patent/ES430422A1/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
    • B01D24/007—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with multiple filtering elements in series connection
    • B01D24/008—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with multiple filtering elements in series connection arranged concentrically or coaxially
    • 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
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/14—Particulate filter materials with a lower density than the liquid mixture to be filtered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/18—Filters characterised by the openings or pores
    • B01D2201/188—Multiple filtering elements having filtering areas of different size

Landscapes

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

Abstract

A filter device for downward filtration, which has a bed that is composed of particles of three or more different materials of different densities from each other and that is capable of being established in layers of successively increasing density in the downward direction, fluidizing the particles and allowing them settling under the action of gravity, in which: (a) the particles of the least dense material form the upper layer and are substantially the same size as each other, (b) the particles of the next less dense material form the layer immediately below the upper layer and are substantially the same size as each other, but smaller than the particles of which the upper layer is composed; (c) the lowest layer is of the densest material, and the largest particles are of such a size that they do not block, or pass through, the passages through which the liquid leaves the bed, during the use of the filter, and (d) from the smallest particles in the bed to the particles in the bottom of the bed, there are particles of many different sizes, these particles adopting (after fluidization) an order in which the particle size gradually increases in a downward direction from the smaller bedding particles. (Machine-translation by Google Translate, not legally binding)
ES430422A 1973-10-02 1974-09-26 Filtration Expired ES430422A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB46031/73A GB1487914A (en) 1973-10-02 1973-10-02 Filtration

Publications (1)

Publication Number Publication Date
ES430422A1 true ES430422A1 (en) 1976-10-16

Family

ID=10439562

Family Applications (1)

Application Number Title Priority Date Filing Date
ES430422A Expired ES430422A1 (en) 1973-10-02 1974-09-26 Filtration

Country Status (4)

Country Link
BR (1) BR7408115A (en)
ES (1) ES430422A1 (en)
GB (1) GB1487914A (en)
ZA (1) ZA745992B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116445B (en) * 1982-03-16 1985-10-23 Paterson Candy Int A filter for and a method of removing solids from liquids
IL76105A0 (en) * 1984-08-29 1985-12-31 Int Minerals & Chem Corp Sand filter media and method of purifying water
FR2610653B1 (en) * 1987-02-05 1989-05-05 Hoarau Patrick ANTI-CLOGGING PREFILTER DEVICE BY INTERCHANGEABLE CARTRIDGE INCORPORATED INTO SEPTIC TANKS
GB2369069B (en) 2000-11-03 2005-02-09 Spruce Internat Separations Lt Water treatment system

Also Published As

Publication number Publication date
ZA745992B (en) 1975-09-24
BR7408115A (en) 1975-11-04
GB1487914A (en) 1977-10-05
AU7373474A (en) 1976-04-01

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