CA1321959C - Filter element for collecting dusts - Google Patents

Filter element for collecting dusts

Info

Publication number
CA1321959C
CA1321959C CA000587669A CA587669A CA1321959C CA 1321959 C CA1321959 C CA 1321959C CA 000587669 A CA000587669 A CA 000587669A CA 587669 A CA587669 A CA 587669A CA 1321959 C CA1321959 C CA 1321959C
Authority
CA
Canada
Prior art keywords
filter element
holes
collecting dusts
dusts
filter
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 - Fee Related
Application number
CA000587669A
Other languages
French (fr)
Inventor
Ekkehard Weber
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.)
GEA Group AG
Original Assignee
Metallgesellschaft 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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
Application granted granted Critical
Publication of CA1321959C publication Critical patent/CA1321959C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
    • B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/10—Filter screens essentially made of metal
    • 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
    • B01D39/1692—Other shaped material, e.g. perforated or porous sheets

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

ABSTRACT
A filter element is described which serves to collect dusts from gases or air and which consists of metals, alloys or plastics and is thin-walled and similar to a film or sheet and has a wall thickness from 0.05 to 2 mm and has a large number of regularly arranged holes which differ in shape and size. The holes have a hydraulic diameter from 0.01 to 1 mm and the area covered by the holes is 30 to 90% of the front surface area of the filter element.

Description

13219~9 DESCRIPTION
This invention rel3tes to a filter element for collecting dusts from gases or air, which filter element con-sists of metals, alloys or plastics and is thin-walled and si-milar to a film or sheet and has a wall thickness from O.OS to Z mm and has a large number of regularly arranged holes which differ in shaoe and size.
Published 5erman Application 3,134,148 discloses a filter element which is of the kind described first herein-before and in which the holes are 5 to 200 ~m in diameter and the ratio of the hole spacing to the hole diameter is between 4:1 and 5:1. Whereas the known filter element has been used to collect dust at a high rate, an undesirably fa~t rise of the pressure drop has been observed in some cases during the filter-ing operation and has required a cleaning of the filter ele-ment after short intervals of time. For this reason it is an object of the invention to provide a filter element which is of the kind described first hereinbefore and which will collect dust at a high rate and can be oPerated with a pressure drop that is as constant as possible for the longest possible time.
The object underlying the invention is accomplished in that the holes have a hydraulic diameter from 0.01 to 1 mm and the area covered by the holes is 30 to 90% of the front surface area of the filter element. It has surprisingly been found that a filter element formed with irregularily shaped holes, ~hich may be, e.g., lens-shaped or rectangular or .
- 2 ~ 13219~9 star-sha~ed, will collect dust at a high rate in conjunction with an only slowly rising pressure drop if said filter ele-ment has the features in accordance with the invention.
The filter element designed in accordance with the invention may be used as a flat sheet or a tube or a bag.
The fllter element i9 cleaned in known manner in that it is rapped and/or in that a gas is passed thraugh the filter ele-ment in a reverse stream which Tay be cantinuous or pulsed.
Even fine dusts are removed by the filter element from the raw gas to such a high degree that the pure gas contains less than 10 mg/sm3 dust. The danger of a clogging of the filter ele-ment may be reduced by the prDvision of non-circular holes so that a high permeability for the gas to be dedusted is main-tained and the pressure drop rises only slowly even in a pro-longed time.
The hydraulic diameter is defined as the quotient of four times the cross-sectional area of a hole which con-stitutes a flow passage and the peripheral length of said hole.--,. -,. . .

Claims

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A filter element for collecting dusts from gases or air, which filter element consists of metals, alloys or plastics and is thin-walled and similar to a film or sheet and has a wall thickness from 0.05 to 2 mm and has a large number of regularly arranged holes which differ in shape and size, characterized in that the holes have a hydraulic diameter from 0.01 to 1 mm and the area covered by the holes is 30 to 90% of the front surface area of the filter element.
CA000587669A 1988-01-09 1989-01-06 Filter element for collecting dusts Expired - Fee Related CA1321959C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3800457.7 1988-01-09
DE3800457A DE3800457C1 (en) 1988-01-09 1988-01-09

Publications (1)

Publication Number Publication Date
CA1321959C true CA1321959C (en) 1993-09-07

Family

ID=6345022

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000587669A Expired - Fee Related CA1321959C (en) 1988-01-09 1989-01-06 Filter element for collecting dusts

Country Status (6)

Country Link
EP (1) EP0327737A3 (en)
JP (1) JPH01224023A (en)
AU (1) AU608400B2 (en)
CA (1) CA1321959C (en)
DE (1) DE3800457C1 (en)
ZA (1) ZA89157B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8904306U1 (en) * 1989-04-07 1989-06-22 Heinrich Fiedler GmbH & Co. KG, 8400 Regensburg Disc filter consisting of individual disc filter segments
DE3915187A1 (en) * 1989-05-10 1990-11-22 Metallgesellschaft Ag FILTER ELEMENT FOR SEPARATING DUST FROM GAS
DE4126420C1 (en) * 1991-08-09 1993-02-11 Bergwerksverband Gmbh, 4300 Essen, De Metallic filter element of improved mechanical stability - obtd. from chromium@-nickel@-molybdenum@-titanium@-contg. steel sheet and has round orifices or slits on inflow side, used for sepn. of particles from gases
JPH0759184A (en) † 1993-03-05 1995-03-03 Matsushita Electric Ind Co Ltd Case and acousting video equipment and its manufacture
NL1005398C2 (en) * 1997-02-28 1998-08-31 Matheus Everardus Antonis Device for separating a substance into a substantially solid and a substantially liquid matter and such a method.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1299212B (en) * 1956-04-18 1969-07-10 American Air Filter Co Airborne fiber separator, especially for textile companies
GB1473853A (en) * 1974-02-16 1977-05-18 Domnick Hunter Eng Filters
CH597895A5 (en) * 1975-03-24 1978-04-14 Andersen 2000 Inc Filtering (sub)micron solid and liq. particles from fast gas streams
DE3134148C2 (en) * 1980-07-03 1993-02-11 Weber Ekkehard Use of a filter element
DE3025126A1 (en) * 1980-07-03 1982-02-04 Weber, Ekkehard, Prof. Dr.-Ing., 4300 Essen Dust filter made from thin plastics or metal foil - with numerous small perforations to promote retention of fine particles
EP0069146A1 (en) * 1981-01-05 1983-01-12 MALIN & HALEY V-shaped filter
JPS596231A (en) * 1982-07-05 1984-01-13 Mitsubishi Rayon Co Ltd Porous fluorocarbon resin membrane and its production
DE3447277A1 (en) * 1984-12-22 1986-06-26 Nordenia Kunststoffe Peter Mager KG, 2841 Steinfeld Self-ventilating sack made of plastic film
CH673082A5 (en) * 1987-10-01 1990-02-15 Nestle Sa

Also Published As

Publication number Publication date
AU2777889A (en) 1989-07-13
EP0327737A3 (en) 1991-03-06
EP0327737A2 (en) 1989-08-16
ZA89157B (en) 1990-09-26
JPH01224023A (en) 1989-09-07
DE3800457C1 (en) 1989-07-27
AU608400B2 (en) 1991-03-28

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Legal Events

Date Code Title Description
MKLA Lapsed