EP0116576A1 - Absorbtion material for filter arrangement - Google Patents

Absorbtion material for filter arrangement

Info

Publication number
EP0116576A1
EP0116576A1 EP19830902464 EP83902464A EP0116576A1 EP 0116576 A1 EP0116576 A1 EP 0116576A1 EP 19830902464 EP19830902464 EP 19830902464 EP 83902464 A EP83902464 A EP 83902464A EP 0116576 A1 EP0116576 A1 EP 0116576A1
Authority
EP
European Patent Office
Prior art keywords
absorbtion
filter arrangement
absorbtion material
filter
perforated
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
EP19830902464
Other languages
German (de)
English (en)
French (fr)
Inventor
Hans Eriksson
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 EP0116576A1 publication Critical patent/EP0116576A1/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1669—Cellular material
    • B01D39/1676—Cellular material of synthetic origin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/02—Loose filtering material, e.g. loose fibres
    • B01D39/04—Organic material, e.g. cellulose, cotton
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/26—Synthetic macromolecular compounds

Definitions

  • the present invention relates to an absorbtion material for a filter arrangement.
  • Suction means are generally used in premises where troublesome gases are formed, these means including a filter to collect constituents which shall not be released to the environment out side said premises.
  • Filters to collect troublesome constituents in the gases are also arranged in front of the outlet openings of material emitting troublesome gases.
  • Carbon particles has hitherto been used to provide such absorbtion material. It has been found in practice that such filters with carbon particles are not efficient enough to eliminate liquid particles from flowing gaseous media.
  • the object of the present invention is to efficiently take care of liquid particles in flowing gaseous media. This is achieved by using one or more bodies including closed spaces which have been perforated.
  • the bodies may suitably consist of foam plastic in which the closed spaces have been perforated.
  • a filter may be formed by one or more parallel-epipedic blocks or it may consist of a casing containing a number of smaller bodies of different shape which have been compressed.
  • a filter can also be produced from a body shaped as a mat or strip which is rolled to suitable shape and placed in a casing.
  • the absorbtion material in the filter is suitably elastic.
  • the material in the filter can be subjected to compressed so that the constituent absorbed from the gaseous medium flowing through the filter can be recovered.
  • the absorbtion material in the filter suitably consists of polythene, polypropylene or a copolymer or polythene and metacrylic acid. Further characteristic features of the present invention are revealed in the following claims.
  • the absorbtion material according to the invention invention is preferably manufactured from a polythene granulate which is mixed with small quantities of powdered additives with the object of forming bubbles. The mixture is fed into the first stage of a two-stage extruder of screw type and is heated to ca.200°C. The melt obtained is fed into the second extruder stage where the temperature is lowered to 100 - 150°C and is extruded through an annular nozzle. A porous tube is obtained and the tube is cooled internally and externally with air and then cut in longitudinal direction to form a strip of foam plastic. Parallel-epipedic bodies may of course be formed instead of strips.
  • parallel-epipedic bodies are produced, they are suitably placed in the frame of a filter arrangement. If a mat is used, however, it must be rolled up, suitably shaped and inserted in a casing which is then placed in a filter arrangement.
  • the mat or parallel-epipedic bodies may also be disintegrated into small particles.
  • a casing is then filled with said small particles and placed in a filter arrangement.
  • a filter arrangement of the type described above functions in the following manner. Gas containing liquid drops is allowed to pass the filter arrangement, whereupon the liquid drops are caught by the absorbtion material and, if the gas contains constituents which are converted to liquid at a drop in temperature, the liquid formed in this way will also be absorbed.
  • the absorbtion material is removed and replaced by fresh material.
  • the absorbtion material in the saturated filter is then subjected to compression whereupon the material absorbed can be recovered for re-use. After compressing the absorbtion material is once more usable.
  • An absorbtion material has thus been produced which not only absorbs liquid particles, but also enables recovery of these particles so that the material is once more usable as a filter.
  • An endless strip can be produced from the mat of absorbtion material mentioned above. This strip is then allowed to run over two rollers, one of which is driving. A strip arranged on rollers is placed in a filter arrangement so that a gas is allowed to flow through one part of the strip and then a second part of the strip. The strip will thus absorb liquid particles which can be recovered if an additional roller is arranged by one of the rollers, pressing against the strip. Each part of the strip will therefore be supplied with gas containing liquid particles on two different occasions and the liquid absorbed is then pressed out between the two cooperating rollers.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Gas Separation By Absorption (AREA)
  • Filtering Materials (AREA)
EP19830902464 1982-08-26 1983-07-18 Absorbtion material for filter arrangement Ceased EP0116576A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8204882 1982-08-26
SE8204882A SE8204882L (sv) 1982-08-26 1982-08-26 Absorbtionsmaterial till filterarrangemang

Publications (1)

Publication Number Publication Date
EP0116576A1 true EP0116576A1 (en) 1984-08-29

Family

ID=20347629

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830902464 Ceased EP0116576A1 (en) 1982-08-26 1983-07-18 Absorbtion material for filter arrangement

Country Status (8)

Country Link
EP (1) EP0116576A1 (da)
JP (1) JPS59501399A (da)
AU (1) AU1828083A (da)
CA (1) CA1215913A (da)
DK (1) DK181684D0 (da)
FI (1) FI77992C (da)
SE (1) SE8204882L (da)
WO (1) WO1984000901A1 (da)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK0793622T3 (da) * 1994-10-04 2003-10-20 Bjoern Pedersen Et bæremedium til at fastholde en biofilm til at rense spildevand og en fremgangsmåde til fremstilling af dette bæremedium
US6720362B1 (en) 1998-09-17 2004-04-13 The Dow Chemical Company Perforated foams
US6541105B1 (en) 1999-09-16 2003-04-01 Dow Global Technologies Inc. Acoustical open-cell polylefins and process for making
ATE323125T1 (de) 2000-03-17 2006-04-15 Dow Global Technologies Inc Polyolefinschaum mit hoher betriebstemperatur zur akustischen verwendung
MXPA02008938A (es) 2000-03-17 2003-06-17 Dow Global Technologies Inc Espuma de poliolefina util para aislamiento acustico y termico.
WO2001070479A1 (en) 2000-03-17 2001-09-27 Dow Global Technologies Inc. Acoustic absorption polymer foam having improved thermal insulating performance
GB0307397D0 (en) * 2003-03-31 2003-05-07 Selsdon Leslie D A filter
JP6445229B2 (ja) * 2013-01-31 2018-12-26 株式会社タムラ製作所 リフロー装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2961710A (en) * 1957-01-04 1960-11-29 Norman H Stark Method for making a foamed polyurethane filter
JPS4866264A (da) * 1971-12-14 1973-09-11
GB1567645A (en) * 1975-10-06 1980-05-21 Scott Paper Co Foam filter
DE2927287B2 (de) * 1979-07-06 1981-05-21 HELSA - Werke Helmut Sandler & Co, 8586 Gefrees Mehrlagiges Filtermaterial mit mindestens einer Lage eines offenporigen Schaumstoffes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8400901A1 *

Also Published As

Publication number Publication date
FI77992B (fi) 1989-02-28
JPS59501399A (ja) 1984-08-09
FI841428A (fi) 1984-04-11
SE8204882L (sv) 1984-02-27
DK181684A (da) 1984-04-06
SE8204882D0 (sv) 1982-08-26
WO1984000901A1 (en) 1984-03-15
FI841428A0 (fi) 1984-04-11
DK181684D0 (da) 1984-04-06
AU1828083A (en) 1984-03-29
CA1215913A (en) 1986-12-30
FI77992C (fi) 1989-06-12

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19840326

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI NL

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19860207