WO2000033940A1 - Filtre a air - Google Patents

Filtre a air Download PDF

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Publication number
WO2000033940A1
WO2000033940A1 PCT/IL1999/000664 IL9900664W WO0033940A1 WO 2000033940 A1 WO2000033940 A1 WO 2000033940A1 IL 9900664 W IL9900664 W IL 9900664W WO 0033940 A1 WO0033940 A1 WO 0033940A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
layer
active carbon
particles
filter
Prior art date
Application number
PCT/IL1999/000664
Other languages
English (en)
Inventor
Mayer Fitoussi
Original Assignee
Mayer Fitoussi
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 Mayer Fitoussi filed Critical Mayer Fitoussi
Priority to AU15826/00A priority Critical patent/AU1582600A/en
Publication of WO2000033940A1 publication Critical patent/WO2000033940A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/01—Deodorant compositions
    • A61L9/014—Deodorant compositions containing sorbent material, e.g. activated carbon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
    • F24F8/158—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using active carbon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
    • F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
    • 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
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B01D2253/108—Zeolites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/406—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/91—Bacteria; Microorganisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0225—Other waste gases from chemical or biological warfare
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0258—Other waste gases from painting equipments or paint drying installations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/414—Further details for adsorption processes and devices using different types of adsorbents
    • B01D2259/4141—Further details for adsorption processes and devices using different types of adsorbents within a single bed
    • B01D2259/4145—Further details for adsorption processes and devices using different types of adsorbents within a single bed arranged in series
    • B01D2259/4146—Contiguous multilayered adsorbents
    • 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

Definitions

  • This invention relates to devices for the filtration and purification of air.
  • particulate compounds refers to a wide variety of polluting material emitted as fluid, or solid particles from various sources such as vehicles, combustion engines, smoke, industrial engines, etc.
  • the particulate compounds may also be from natural sources such as pollen or plant particles, bacteria, virions, and other microorganisms. These particles are deposited in the air ducts, and may lead, after various exposure periods to allergies, headaches, asthma, pre-disposition to infectious diseases, and in extreme cases may also lead to cancer.
  • Zeolites are alumina silica minerals that contain alkali and alkaline-earth metals, such as sodium, potassium and calcium as well as water molecules within their structural framework.
  • the framework is relatively porous, enclosing inter-connected cavities in which metal cations and water molecules resides.
  • the cations and water molecules have a considerable freedom of movement wtihin the framework of aluminium, oxygen, and silicon atoms and this gives the zeolites cation-exchange and reverse dehydratin properties.
  • the porous framework of the zeolites enables them to act as molecular sieves which are able to separate molecular mixtures on the basis of the size and shape of the molecular compounds, or enables the selective absorption of gasses thereon.
  • Cation exchange particles are polymers having cation exchange groups for example carboxylic, sulfonic, etc. and are usually used in filtering, and cleansing of liquids such as water, or for various laboratory purposes.
  • the present invention provides a device for filtration and purification of air comprising: at least one layer of active carbon; and at least one layer of a particle-absorbing-agent selected from the group consisting of: acidic cation exchanger; zeolites; cation exchanged molecular sieve.
  • the device of the invention also includes means for mobilizing the air to be filtered and purified through said layers.
  • the device of the invention is suitable for any purpose where ambient air (which is not exhaust fumes emitted from engines) is to be filtered.
  • Typical uses of the device of the invention are for household purposes, such as for living rooms, for childrens' rooms, for offices, etc. Due to the fact that the device of the invention is especially suitable for filtering urine odors, the device is particularly suitable for toilets, public urinaries, childrens' rooms, hospitals, etc.
  • the device of the invention is suitable for shelters, including shelters against chemical and/or biological warfare, is suitable to be fitted as a part, of or in connection with, pre-existing air-conditioning systems, is suitable for placement in small industrial spaces, such as in garages, or suitable for placing in confined spaces such as in mines and inside cars and is also suitable for livestock industry, such as to be fitted in barns, pigsties, hen houses, etc.
  • the device of the invention can be used in the vicinity of dust-and dirt-sensitive devices such as computers, TVs, CD players, etc.
  • the device of the invention may be used as a filter for cigarettes including both tobacco containing cigarettes and medicinal cigarettes made from various herbs.
  • the cigarette filter can be a combination of zeolites and active carbon either mixed together as a mixture or present as a distinct layer of zeolites and/or cation exchange particles and a layer of active carbon.
  • the filter can be integral with the cigarette or detachable therefrom for replacement.
  • the cigarette filter may be formed within a state of the art cigarette present in most commercially available cigarettes.
  • the air can be filtered and purified from the following undesired components: dust particles, urine odors (caused by NH 4 + ions), small particles emitted by industrial paint, or industrial machinery; infectious agents such as bacteria, virus and parasites, especially those present in lifestock industry; pollen; smoke including cigarette smoke; smog; dust and various other particles.
  • the filter may also be installed in a welding helmet as well as placed in bicycle and motorcycle riders' helmets for the purpose of purifying air.
  • the device of the invention includes as one of its components at least one layer of active carbon.
  • the active carbon may be in an essentially continuous form, i.e. present as compact dust held by a net or by a filtering membrane; in a particulate form; present as a grid or sieve composed of fibers of active carbons; present as parallel carbon fibers or present as a porous, sponge-like substance.
  • the carbon is porous, or structured in preferably the form of a grid, a sieve or parallel fibers which can serve also as a means for mechanically filtering out the particles according to their sizes as will be explained herein below.
  • the device of the present invention further comprises a layer composed of an agent which can actively absorb and/or exchange particles termed hereinafter
  • the particle-absorbing agent may be composed of acidic cation exchangers, being agents capable of exchanging cations, or of absorbing ammonia.
  • the cation exchange polymer may be in the form of an acid or can be a cation exchange membrane. Examples are exchangers according to the following equation:
  • Ammonia is the predominant material which causes a urine smell, thus by using cation exchangers in acidic form smell of urine can be eliminated.
  • ammonia smells are produced in various reactors in industry, garages, iron mills, etc.
  • the particle absorbing agents can be cation exchange molecular sieves.
  • Molecular sieve is a porous crystalline solid with framework based on an extensive three-dimensional network of oxygen ions containing generally tetrahedral-type sites occupied by cation T (Si +4 ), Al +3 , other cations can also occupy tetrahedras T namely: As, B, Be, Co, Cr, Ga, Fe, In, La, Mg, Mn, P, Sb, Sn, Ti, V, Zn, Zr etc..
  • the tetrahedra is A10 2
  • the framework is charged and the charge is balanced by exchangeable cations that occupy non-framework positions.
  • Typical cations include: the alkaline (Na + , K + , Rb + , Cs + ) and alkaline earth (Mg , Ca ) cations, NEU , H , tetralkylammonium and other N or P containing cations, and the rare earth and noble metal ions.
  • Zeolites are a specific case of the molecular sieve belonging to silicas group of MS's more detailed to metallosilicates (Szostak, I.R., Molecular Sieve, Principles of Synthesis and identification, Van Nostrand Reinhold, Catalysis Series, New York, 1989).
  • cation exchange zeolites which are Ca-, Ba-mordonite which can absorb only gases with critical size less than 3.8 Angstrem (He, Ne, Ar, H 2 , 0 2 , NH 3 , H 2 0), zeolite 4A (which absorb CH 4 , CH 3 OH, CH .
  • zeolite 5A (which absorb all compounds mentioned above and also C3H8, n-C ⁇ Hio- n-C H.O , C 2 H 5 OH, C 2 H 5 NH 2 , CH 2 Br 2 , CHF 3 , CH 3 I, (CH 3 ) 2 NH 2 etc.), zeolite 10X (which can also adsorb 8-9°A molecules), zeolites Y and X (which can adsorb 1,3,5 - trietylbenzene with 10°A size), a natural zeolite named clinoptilolite (capable of absorbing the following absorbing gases: S0 2 , H 2 S, NH 3 , CO, C0 2 , H 2 , N 2 , H 2 0).
  • the MS's are able to separate molecular mixtures on the basis of the size and shape of the molecular compounds or enable the selective absorption
  • the device of the invention further comprises means for mobilizing the air to be filtered and purified through the above at least two layers.
  • the means may be an air pump, an air blower, (for example, of the suck-and-blow configuration) a fan which can mobilize air, in a predefined direction, i.e. from the outer environment, through said layers, and back to the outer environment.
  • the air pump, air blower, or fan may be a part of the device, or may be a part of a larger air control device, such as a part of an air- conditioning system, and in that case, the device is a hybrid, comprising the above layers, for example, present as a cassette, placed over a pre-existing air transferring means, such as a pre-existing air-conditioning systems.
  • the means may also be means for providing electrostatic forces which are also known to mobilize air.
  • the air mobilizing means can be powered by electricity, by battery or by solar energy, for example, where the filter is used to filter air within cars.
  • the device of the present invention further comprises a sieve which can filter out particles according to their sizes.
  • the sieve may be any compound having an essentially uniform porous distribution, such as high efficiency particulate air filter (HEPA), a fiber filter, a filter composed of various membranes such as paper, cloth, polyester, a polypropylene or a nylon filter construction, a sieve made out of silicon and TeflonTM, etc.
  • HEPA high efficiency particulate air filter
  • a fiber filter such as a filter composed of various membranes such as paper, cloth, polyester, a polypropylene or a nylon filter construction
  • a sieve made out of silicon and TeflonTM etc.
  • the various layers, sieves and means for mobilizng air may be arranged in several manners, in accordance with the desired purpose of the device.
  • the device may comprise as an outer layer active carbon, preferably in the form of carbon fibers, which besides the activity of absorbing particles, may also serve as a sieve filter particle according to size. Beneath this active carbon, there should be an inner layer of acidic cation exchanger and/or zeolites.
  • the basic device is very inexpensive and simple. Such basic device may also be used as a filter for cigarette smoke.
  • the basic device may be equipped with a fan, present beneath these layers, capable of mobilizing air through the active carbon fiber and cation exchange layer.
  • a simple arrangement may be positioned directly inside the toilet bowl, in the outcoming pipe from the toilet bowl, or in the vicinity of the toilet bowl, in order to filter out urine smells.
  • the device of the invention has the following layer arrangement: as an outer layer, a sieve, being any of the sieves specified above. Beneath the sieve, as a second intermediate layer is an acidic cation exchanger, and/or zeolite preferably cation exchanged zeolites; and finally as the innermost layer, active carbon. This arrangement, ensures that the largest particles are first filtered out by the sieve according to their size.
  • the intermediate cation exchange or zeolite layer filters out the following components: H 2 , NH 3 , CH 3 OH, CH3CN, CH3CI, CH 3 Br, C0 2 , C2H2, CS 2 , C 3 H 8 , n-C ⁇ ' n-C ⁇ O, C 2 H 5 OH, C 2 H 5 NH 2 , CH 2 C1 2 , CH 2 Br 2 , CHF3, CH 3 F 3 , CH 3 I, (CH 3 ) 2 NH 2 and most particularly eliminates moisture present in the air, so that the active carbon (which is present in the innermost layer) comes into contact with relatively dry and purified air, and thus can act for long periods of time without becoming saturated.
  • Another option, suitable for eliminating moisture in closed spaces such as closets or refrigerators (to avoid smell and development of mold) comprises as an outer layer fibers of active carbon, as an inner layer, a sieve, and as the innermost layer, an acidic cation exchange layer.
  • Such an arrangement is simple, inexpensive and does not require the presence of a fan.
  • the fan in any of these arrangements can be positioned in any place which ensures the transfer of ambient air through the layers, and out again, and preferably is beneath the most innermost layer.
  • the ratio between the various layers should be preferably 1 :1, w/w, or 1:1, surface area region to surface area region (in sq. cm) so that all the layers are saturated essentially after the same period of time by the various particles, and all of them should be replaced together by new unsaturated layers at the same time.
  • the various layers of the device may be structured as a single cassette, which can be removed, and replaced by a new cassette with new layers which unsaturated by filtered out particles.
  • the spatial arrangement of the device can be varied according to the intended purpose. For simple household uses, an essentially flat layered arrangement can be used, and this can ensure that the bulk of the device is relatively small, so it may be hung inside a car, placed inside a room, etc.
  • the device may be constructed so as to increase its surface area, in order to facilitate contact between the various layers and the ambient air, for example, by constructing the device's layers to have many perfusions and depressions on its surface; by constructing the layers in a spherical manner, etc.
  • this layer can be fitted with a heater.
  • the present invention further concerns a cassette for use in connection with air-mobilizing means comprising: at least one layer of active carbon; at least one layer of a particle-absorbing-agent selected from the group consisting of: acidic cation exchanger; zeolites; cation exchanged molecular sieve.
  • the cassette may be obtained separately to be placed as on a disposable component of the device of the invention, and in that case the device of the invention further comprises a housing for holding the cassette.
  • the cassette may be constructed so as to be placed in pre-existing air mobilizing means such as for placement above fans, ventilators inside air-conditioning systems and the like.
  • Fig. 1A, IB and 1C shows a schematic representation of three options for arranging the various layers of the device of the invention
  • Fig. 2 shows a device constructed to be placed in the vicinity of a toilet bowl
  • Fig. 3A, 2B and 3C shows various constructs of the device for household usages
  • Fig. 1 shows three alternative manners for arranging the various layers of the device of the invention.
  • Fig. 1A shows the device 1, suitable as a basic inexpensive device for example to be placed in toilet rooms or cars.
  • the device comprises an outer layer 2 made of carbon fibers preferably present in the same orientation.
  • Beneath layer 2 comes layer 3 made of cation exchange particles, zeolites, or acidic cation exchanged molecular sieves held in place by suitable net or restraining structures or by gluing the particles to the layer below.
  • a fan 4 is present.
  • Such an arrangement ensures that ambient air first passes through active carbon fibers, and particles in the air are both actively absorbed thereon, and filtered according to their sizes (due to its sieve-like properties) and then the relatively cleaned air is mobilized into zeolites/or cation exchange layer so that the remaining particles, ions and odors can be filtered out.
  • the device shown in Fig. IB has a more complex arrangement, and is suitable for household purposes.
  • the device 5, comprises as an outer layer, sieve 6, for example, a paper filter capable of filtering out particles according to size.
  • Beneath the paper filter comes a layer 7 of particle-absorbing-agents, such as cation exchange or zeolites as explained above.
  • Fig. 1C shows the device 10, having as an outer layer active carbon fibers 11, beneath them a layer 12 of sieve such as a high efficiency particulate air filter (HEPA) and beneath that the layer of particle-absorbing- agents 13. such as cation exchange particles.
  • HEPA high efficiency particulate air filter
  • the fan 14 is present at the innermost part of the device.
  • Fig. 2 shows device 20 to be placed in the vicinity of toilet bowl 21, comprising to filtering and purification parts 23.
  • Parts 23, are composed of the basic filter, shown in Fig. 1A, wherein the uppermost part 24 is made of a layer of active carbon and acid cation exchange resins, suitable for filtering out NH + ions which cause urine odor, and beneath them, is fan 25.
  • the air is mobilized so that is moves from toilet bowl 21, through air channels 22, then filtered and purified through layers 24, with the aid of fan 25, and then is emitted again outside.
  • Fig. 3A, B and C show three different constructs for devices for household uses 31, 32 and 33, respectively.
  • each device there is present layers of active carbon/zeolites/sieves, according to any one of the options of Fig. 1A, IB or 1C, represented in Fig. 3 A as 34, in Fig. 3B as 35 and in Fig. 3C as 36.
  • the air mobilizing means in Fig. A and B is a fan 37 and 38, respectively, and in Fig. 3C is an air pump 39.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Epidemiology (AREA)
  • Materials Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

L'invention concerne un filtre (1) destiné à purifier l'air et comprenant une couche de charbon actif (2), ainsi qu'une seconde couche (3) composée d'un échangeur de cations acides, de zéolithes, et de tamis moléculaires d'échange cationique.
PCT/IL1999/000664 1998-12-09 1999-12-07 Filtre a air WO2000033940A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU15826/00A AU1582600A (en) 1998-12-09 1999-12-07 Air filter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL127456 1998-12-09
IL12745698A IL127456A0 (en) 1998-12-09 1998-12-09 Air filter

Publications (1)

Publication Number Publication Date
WO2000033940A1 true WO2000033940A1 (fr) 2000-06-15

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ID=11072238

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL1999/000664 WO2000033940A1 (fr) 1998-12-09 1999-12-07 Filtre a air

Country Status (3)

Country Link
AU (1) AU1582600A (fr)
IL (1) IL127456A0 (fr)
WO (1) WO2000033940A1 (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001070391A1 (fr) * 2000-03-21 2001-09-27 Mhb Filtration Gmbh + Co. Kg Materiau filtre adsorbant
WO2002062401A2 (fr) * 2001-02-02 2002-08-15 The Procter & Gamble Company Dispositif et procede pour la desodorisation et/ou l'assainissement de l'air
US6913733B2 (en) 2001-02-02 2005-07-05 The Procter & Gamble Company Apparatus and method for deodorizing and/or freshening air
EP1712268A1 (fr) * 2005-04-12 2006-10-18 Carl Freudenberg KG Elément filtrant et dispositif de filtration
WO2007047484A1 (fr) * 2005-10-13 2007-04-26 Orava John E Appareil de filtrage ininterrompu de gaz
US7222634B2 (en) * 2003-01-17 2007-05-29 Daniel G. Hess Scent elimination system for hunters
AT12976U1 (de) * 2012-02-06 2013-03-15 Anton Kluge Filteranordnung
EP2684591A1 (fr) 2012-07-11 2014-01-15 Mann + Hummel Gmbh Filtre à air pour l'air intérieur de cabines de véhicules, de machines agricoles, de machines de construction et de machines de travail
DE102014000353A1 (de) 2013-03-21 2014-09-25 Mann + Hummel Gmbh Filterelement sowie Verfahren zum Austauschen eines Filterelements
DE102013008392A1 (de) 2013-05-17 2014-11-20 Mann + Hummel Gmbh Luftfilter für die Innenraumluft von Kabinen von Fahrzeugen, Land-, Bau- und Arbeitsmaschinen
CN104990166A (zh) * 2015-06-02 2015-10-21 陕西优斯达环境科技有限公司 高效净化除霾新风机
DE202016102373U1 (de) 2016-03-03 2016-05-20 Anton Kluge Säulenförmiger Werbeträger
JP2016171875A (ja) * 2015-03-17 2016-09-29 三菱製紙株式会社 脱臭剤封入濾材
CN108088002A (zh) * 2017-11-05 2018-05-29 肇庆市高新区伟瑞生物科技有限公司 一种自循环的太阳能空气净化器
CN109078455A (zh) * 2018-08-22 2018-12-25 吴斌 一种氢燃料电池空气滤芯的新型功能单元
DE202019101698U1 (de) 2018-05-23 2019-05-09 Anton Kluge Filteranordnung
WO2021134116A1 (fr) * 2020-01-03 2021-07-08 Robert John Goldsworthy Élimination de mycotoxines de l'environnement construit

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GB2021435A (en) * 1978-05-10 1979-12-05 Hoelter H Air filter
DE3002409A1 (de) * 1980-01-24 1981-07-30 Ing.(grad.) Heinz 4390 Gladbeck Hölter Geruchsbeseitigungsfilter
WO1986004553A1 (fr) * 1985-02-05 1986-08-14 Hoelter Heinz Cabine servant au sejour de personnes
US5048546A (en) * 1989-12-15 1991-09-17 Hsu Chi Hsueh Filter and method of treating tobacco smoke to reduce materials harmful to health
US5348563A (en) * 1993-06-29 1994-09-20 Honeywell Inc. Air purifying apparatus
EP0818230A1 (fr) * 1996-07-01 1998-01-14 J.C. Binzer Papierfabrik GmbH & Co. KG Filtre constitué de fibres et procédé de fabrication

Cited By (25)

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WO2001070391A1 (fr) * 2000-03-21 2001-09-27 Mhb Filtration Gmbh + Co. Kg Materiau filtre adsorbant
WO2002062401A2 (fr) * 2001-02-02 2002-08-15 The Procter & Gamble Company Dispositif et procede pour la desodorisation et/ou l'assainissement de l'air
WO2002062401A3 (fr) * 2001-02-02 2002-10-03 Procter & Gamble Dispositif et procede pour la desodorisation et/ou l'assainissement de l'air
US6913733B2 (en) 2001-02-02 2005-07-05 The Procter & Gamble Company Apparatus and method for deodorizing and/or freshening air
US7222634B2 (en) * 2003-01-17 2007-05-29 Daniel G. Hess Scent elimination system for hunters
EP1712268A1 (fr) * 2005-04-12 2006-10-18 Carl Freudenberg KG Elément filtrant et dispositif de filtration
WO2007047484A1 (fr) * 2005-10-13 2007-04-26 Orava John E Appareil de filtrage ininterrompu de gaz
US8221523B2 (en) 2005-10-13 2012-07-17 Orava Applied Technologies Corporation Apparatus for the uninterruptible filtering of gas
AT12976U1 (de) * 2012-02-06 2013-03-15 Anton Kluge Filteranordnung
US9956515B2 (en) 2012-07-11 2018-05-01 Mann+Hummel Gmbh Air filter operable for filtering cabin air in vehicles, agricultural machinery, construction equipment and other work machines
EP2684591A1 (fr) 2012-07-11 2014-01-15 Mann + Hummel Gmbh Filtre à air pour l'air intérieur de cabines de véhicules, de machines agricoles, de machines de construction et de machines de travail
DE102013011457A1 (de) 2012-07-11 2014-01-16 Mann + Hummel Gmbh Luftfilter für die Innenraumluft von Kabinen von Fahrzeugen, Land-, Bau- und Arbeitsmaschinen
EP3903906A1 (fr) 2012-07-11 2021-11-03 MANN+HUMMEL GmbH Filtre à air pour l'air intérieur de cabines de véhicules, de machines agricoles, de machines de construction et de machines de travail
EP3586939A1 (fr) 2012-07-11 2020-01-01 Mann+Hummel GmbH Filtre à air pour l'air d'habitacle des cabines de véhicules, de machines agricoles, de construction et d'eingins de travaux publics
DE102014000353A1 (de) 2013-03-21 2014-09-25 Mann + Hummel Gmbh Filterelement sowie Verfahren zum Austauschen eines Filterelements
DE102013008392A1 (de) 2013-05-17 2014-11-20 Mann + Hummel Gmbh Luftfilter für die Innenraumluft von Kabinen von Fahrzeugen, Land-, Bau- und Arbeitsmaschinen
US10105636B2 (en) 2013-05-17 2018-10-23 Mann+Hummel Gmbh Air filter for the interior air of cabins of vehicles, agricultural, construction, and work machines
EP3763433A1 (fr) 2013-05-17 2021-01-13 Mann+Hummel GmbH Filtre à air pour l'air intérieur de cabines de véhicules, engins agricoles, de construction et de travail
JP2016171875A (ja) * 2015-03-17 2016-09-29 三菱製紙株式会社 脱臭剤封入濾材
CN104990166A (zh) * 2015-06-02 2015-10-21 陕西优斯达环境科技有限公司 高效净化除霾新风机
DE202016102373U1 (de) 2016-03-03 2016-05-20 Anton Kluge Säulenförmiger Werbeträger
CN108088002A (zh) * 2017-11-05 2018-05-29 肇庆市高新区伟瑞生物科技有限公司 一种自循环的太阳能空气净化器
DE202019101698U1 (de) 2018-05-23 2019-05-09 Anton Kluge Filteranordnung
CN109078455A (zh) * 2018-08-22 2018-12-25 吴斌 一种氢燃料电池空气滤芯的新型功能单元
WO2021134116A1 (fr) * 2020-01-03 2021-07-08 Robert John Goldsworthy Élimination de mycotoxines de l'environnement construit

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