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WO1999054022A1 - Unite de filtration pour eliminer des substances nocives dans des fluides - Google Patents

Unite de filtration pour eliminer des substances nocives dans des fluides Download PDF

Info

Publication number
WO1999054022A1
WO1999054022A1 PCT/EP1999/002502 EP9902502W WO9954022A1 WO 1999054022 A1 WO1999054022 A1 WO 1999054022A1 EP 9902502 W EP9902502 W EP 9902502W WO 9954022 A1 WO9954022 A1 WO 9954022A1
Authority
WO
WIPO (PCT)
Prior art keywords
flat filter
filtration unit
unit according
housing space
adsorber particles
Prior art date
Application number
PCT/EP1999/002502
Other languages
German (de)
English (en)
Inventor
Andreas Graus
Christian SCHÄFER
Original Assignee
Sartorius 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 Sartorius Ag filed Critical Sartorius Ag
Publication of WO1999054022A1 publication Critical patent/WO1999054022A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0415—Beds in cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/18—Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/30—Physical properties of adsorbents
    • B01D2253/302—Dimensions
    • B01D2253/304—Linear dimensions, e.g. particle shape, diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4533—Gas separation or purification devices adapted for specific applications for medical purposes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/006—Cartridges

Definitions

  • Filtration unit to remove pollutants from fluids.
  • the invention relates to a filtration unit for removing pollutants from fluids, such as liquids and gases, using particulate adsorbers, in particular using activated carbon particles.
  • the filtration units according to the invention can be used in rooms with special requirements for safety and cleanliness, for example in operating rooms of clinics for the adsorption of harmful gases which arise, for example, when mixing bone cement; in laboratories, for example for cleaning carrier gases for analysis devices; for the filtration of liquids for the removal of interfering accompanying substances, which are to be examined, for example, using diagnostic kits.
  • Filtration units of this type can be used as disposables and can be disposed of together with the adsorbed pollutants.
  • a filtration unit designed as a filter cartridge which has a bed of activated carbon particles between a polyester urethane foam layer and a glass fiber layer.
  • the activated carbon particles should be pressed together by the two layers so that the loose bed can move as little as possible. This is intended to avoid the formation of cavities through which fluid (air) laden with pollutants would break through unhindered. It is disadvantageous that the fluid is opposed to a high volume resistance, which leads to a reduction in the filter performance. As an alternative to this, it is also proposed to finely distribute the activated carbon particles in a coarse glass fiber fleece.
  • the object of the invention is therefore to provide a filtration unit for removing pollutants from fluids using adsorber particles, which ensures high filtration and adsorption performance and avoid bypassing and contaminating the filtrate.
  • a filtration unit which consists of a housing which is provided on the opposite side with an inlet and an outlet connection, the connections being separated from the housing space by flat filter layers covering them and the housing space containing a bed of adsorber particles such that the The fluid to be filtered is intended to pass through the inlet connection, the first flat filter layer, the adsorber particles, the second flat filter layer and the outlet connection.
  • the housing space is between approximately 99 and approximately 97% filled with the adsorber particles and is tapered in at least one section, the flat filter layers being arranged centrally symmetrically to one another.
  • the taper is such that the volume of the housing space is reduced by at least about 5%, preferably by about 10%, compared to the volume of a housing space without such a taper.
  • the tapering of the housing space and the centrally symmetrical arrangement of the two flat filter layers means that the filtration unit can be operated in any position and that no bypass can be formed between the bed of adsorber particles and the housing wall, which the fluid to be filtered can pass unhindered without adsorption.
  • the housing space is formed in the tapered sections as a truncated cone or as a truncated pyramid.
  • the flat filter layers arranged centrally symmetrically to one another differ in size at least 5%, preferably at least 10%. In this embodiment, the tapering of the housing space is not necessary.
  • the flat filter layers consist of hydrophobic and for the removal of pollutants from aqueous solutions from hydrophilic materials, preferably from corresponding porous membranes. It has proven sufficient for the filtration performance if the flat filter layers have a pore diameter in the range from 0.2 to 0.5 ⁇ m, preferably from 0.2 ⁇ m.
  • Such hydrophobic membranes allow, for example, an air throughput of at least 3 liters per minute and cm 2 at a pressure difference of 0.1 bar.
  • membranes with the pore size range mentioned retain microorganisms and abrasion of the adsorber particles practically quantitatively.
  • Preferred hydrophobic membranes are those made from polytetrafluoroethylene (PTFE).
  • the hydrophobic membranes When removing pollutants from gases, the hydrophobic membranes also act as a liquid barrier and protection for subsequent moisture-sensitive devices, such as pumps, analysis devices, etc.
  • a membrane with a pore diameter of more than 0.5 ⁇ m can be used for the first flat filter layer arranged on the inlet side .
  • Modified polyethersulfone, polyamide, cellulose acetate and cellulose hydrate membranes (Hydrosart®, Sartorius AG) have proven particularly useful as hydrophilic membranes.
  • the hydrophilic membranes consist of porous membrane adsorbers, for example in the form of ion exchange membranes.
  • porous membrane adsorbers are membranes which have functional groups, ligands or reactants on their inner and outer surface which enable them to interact with at least one substance in a liquid phase in contact with it are.
  • pollutants to the membrane adsorbers, which either are not bound by the adsorber particles or where the membrane adsorbers act as additional safety filters (Pohzeifilters), such as to ensure the separation of endotoxins from membrane adsorbers (DE -OS 195 43 371). 4
  • the flat filter layers are trimmed. It is generally sufficient if at least one of the flat filter layers is trimmed, preferably the second flat filter layer adjacent to the outlet connection.
  • the outlet connection itself can be designed as a filter support
  • the adsorber particles are selected depending on the adsorption task.
  • Activated carbon is often used.
  • Activated carbon particles usually have a specific inner surface area of 500 to over 2000 m 2 / g (BET determination method) .This enables them to bind a large number of substances non-specifically permanently or reversibly but also the outer surface of the activated carbon particles influences the adsorption kinetics, activated carbon with a grain size between 0.7 and 1.5 mm is preferably used.
  • the fill should have a height (adsorption length) of at least 1.5 cm
  • Fig. 1 schematically shows a vertical section through an embodiment of a filtration unit according to the invention with a continuous
  • FIG. 2 schematically shows a vertical section through a further embodiment of a filtration unit according to the invention with two tapers
  • FIG. 3 schematically shows a vertical section through an alternative embodiment of a filtration unit according to the invention with filter layers of different sizes
  • the filtration unit 1 consists of a housing 2, which is provided on the opposite side with an inlet port 3 and an outlet port 4.
  • the ports 3, 4 are separated from the housing space 5 by a first 6 and a second flat filter layer 7 covering them
  • the housing space 5 contains one Dumping of adsorber particles 8
  • the housing space 5 is designed as a truncated cone in FIG. 1, with two tapering sections designed as a truncated cone in FIG. 2 and as a cylinder in FIG. 3.
  • the first flat filter layer 6 is on both sides in FIG. 1, in FIGS. 2 and 3 are supported on one side.
  • webs of fluid distribution channels 9, which are applied to the surface of the inlet connection 3 facing the flat filter layer 6, serve as filter support and, on the other hand, according to FIG is, an additional filter support 10, for example introduced in the form of a grid, fabric or fleece.
  • webs of fluid collection channels 11 of the outlet nozzle 4 serve as filter support
  • the active filter area of the first flat filter layer 6 arranged on the input side is at least 5% smaller than the active filter area of the second flat filter layer 7 arranged on the output side.
  • the filtration unit 1 can be operated in both directions. The position in which the filtration is successful is irrelevant it is used

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

L'invention concerne des unités de filtration pour éliminer des substances nocives dans des fluides au moyen de particules adsorbantes. Le boîtier (2) de l'unité de filtration (1) est muni de tubulures d'entrée (3) et de sortie (4) qui sont séparées de la chambre (5) du boîtier par des couches filtrantes plates (6, 7). La chambre de boîtier (5) est remplie de particules adsorbantes (8) à raison d'une valeur comprise entre 97 et 99 % et se rétrécit en présentant une réduction de volume d'au moins 5 %. Les couches filtrantes plates (6, 7) sont disposées avec une symétrie centrale l'une par rapport à l'autre. Dans une variante par rapport au rétrécissement du boîtier, la dimension des couches filtrantes plates diffère d'au moins 5 %. Ainsi, une capacité élevée de filtration et d'adsorption est garantie, et des dérivations et des contaminations du filtrat sont évitées. Ces unités de filtration s'utilisent dans des chambres répondant à des exigences particulières en matière de sécurité et de pureté, pour la purification des gaz porteurs destinés à des appareils d'analyse, et pour la filtration de liquides en vue d'éliminer les impuretés d'accompagnement gênantes. Lesdites unités de filtration peuvent être évacuées, sous forme d'articles jetables, conjointement avec les substances nocives adsorbées.
PCT/EP1999/002502 1998-04-16 1999-04-14 Unite de filtration pour eliminer des substances nocives dans des fluides WO1999054022A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19816871.3 1998-04-16
DE1998116871 DE19816871C2 (de) 1998-04-16 1998-04-16 Filtrationseinheit zur Entfernung von Schadstoffen aus Fluiden

Publications (1)

Publication Number Publication Date
WO1999054022A1 true WO1999054022A1 (fr) 1999-10-28

Family

ID=7864715

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/002502 WO1999054022A1 (fr) 1998-04-16 1999-04-14 Unite de filtration pour eliminer des substances nocives dans des fluides

Country Status (2)

Country Link
DE (2) DE19816871C2 (fr)
WO (1) WO1999054022A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7175697B2 (en) 2003-03-21 2007-02-13 Gambro Lundia Ab Device for protecting medical apparatus
US7942953B2 (en) 2000-09-26 2011-05-17 Lanxess Deutschland Gmbh Adsorption vessels
GB2620904A (en) * 2022-04-21 2024-01-31 Edwards Ltd Canister

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMO20030079A1 (it) * 2003-03-21 2004-09-22 Gambro Lundia Ab Dispositivo per proteggere apparati medicali
US7516665B2 (en) 2003-12-23 2009-04-14 Jms North America Corporation Double membrane transducer protector
US7069788B2 (en) 2003-12-23 2006-07-04 Jms North America Corp. Double membrane transducer protector

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240567A (en) * 1962-04-02 1966-03-15 Foregger Co Inc Prepackaging of granular material and methods
US3615233A (en) * 1969-07-28 1971-10-26 Chemetron Corp Disposable carbon dioxide absorber
GB1449999A (en) * 1973-07-04 1976-09-15 Pirelli Container
DE2623793A1 (de) * 1975-05-28 1976-12-09 Pirelli Elastische kreisfoermige membran als traeger fuer die filtermasse von atmungsmaskenfiltern
DE2719814A1 (de) * 1977-05-04 1978-11-16 Hoechst Ag Membraneinheit, vorrichtung mit membraneinheit und verfahren zur entgiftung des blutes
EP0159698A2 (fr) * 1984-04-27 1985-10-30 Pall Corporation Cartouche pour masque à gaz
US5149429A (en) * 1990-08-27 1992-09-22 Baker Norman L Filter for removing contaminants from refrigerant
US5350513A (en) * 1992-07-02 1994-09-27 Calgon Carbon Corporation Flexible-walled absorber

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1123754A (fr) * 1978-01-26 1982-05-18 Richard W. Hradek Cuve a aire d'adsorption moleculaire variable
DE3539641A1 (de) * 1985-11-08 1987-05-14 Edwin Dipl Ing Erben Vorrichtung zur filterung von partikeln aus gasen
US5110330A (en) * 1990-02-08 1992-05-05 Arrow Pneumatics, Inc. Filter dryer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240567A (en) * 1962-04-02 1966-03-15 Foregger Co Inc Prepackaging of granular material and methods
US3615233A (en) * 1969-07-28 1971-10-26 Chemetron Corp Disposable carbon dioxide absorber
GB1449999A (en) * 1973-07-04 1976-09-15 Pirelli Container
DE2623793A1 (de) * 1975-05-28 1976-12-09 Pirelli Elastische kreisfoermige membran als traeger fuer die filtermasse von atmungsmaskenfiltern
DE2719814A1 (de) * 1977-05-04 1978-11-16 Hoechst Ag Membraneinheit, vorrichtung mit membraneinheit und verfahren zur entgiftung des blutes
EP0159698A2 (fr) * 1984-04-27 1985-10-30 Pall Corporation Cartouche pour masque à gaz
US5149429A (en) * 1990-08-27 1992-09-22 Baker Norman L Filter for removing contaminants from refrigerant
US5350513A (en) * 1992-07-02 1994-09-27 Calgon Carbon Corporation Flexible-walled absorber

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7942953B2 (en) 2000-09-26 2011-05-17 Lanxess Deutschland Gmbh Adsorption vessels
US7175697B2 (en) 2003-03-21 2007-02-13 Gambro Lundia Ab Device for protecting medical apparatus
US7621983B2 (en) 2003-03-21 2009-11-24 Gambro Lundia Ab Transduction-protection device
GB2620904A (en) * 2022-04-21 2024-01-31 Edwards Ltd Canister

Also Published As

Publication number Publication date
DE29901267U1 (de) 1999-07-22
DE19816871C2 (de) 2002-05-08
DE19816871A1 (de) 1999-10-21

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