WO2017114918A1 - Appareil d'oxydation photocatalytique - Google Patents

Appareil d'oxydation photocatalytique Download PDF

Info

Publication number
WO2017114918A1
WO2017114918A1 PCT/EP2016/082872 EP2016082872W WO2017114918A1 WO 2017114918 A1 WO2017114918 A1 WO 2017114918A1 EP 2016082872 W EP2016082872 W EP 2016082872W WO 2017114918 A1 WO2017114918 A1 WO 2017114918A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
photocatalytic
oxidation apparatus
emitting surface
light emitting
Prior art date
Application number
PCT/EP2016/082872
Other languages
English (en)
Inventor
Declan Patrick Kelly
Ryan Wang
Cornelis Reinder Ronda
Weizhong Chen
Original Assignee
Koninklijke Philips N.V.
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 Koninklijke Philips N.V. filed Critical Koninklijke Philips N.V.
Publication of WO2017114918A1 publication Critical patent/WO2017114918A1/fr

Links

Classifications

    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/88—Handling or mounting catalysts
    • B01D53/885—Devices in general for catalytic purification of waste gases
    • 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
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/18—Radiation
    • A61L9/20—Ultraviolet radiation
    • A61L9/205—Ultraviolet radiation using a photocatalyst or photosensitiser
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • 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
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
    • 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
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/10—Apparatus features
    • A61L2209/14—Filtering means
    • 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
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/10—Apparatus features
    • A61L2209/16—Connections to a HVAC unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/80—Type of catalytic reaction
    • B01D2255/802—Photocatalytic
    • 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
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C02F1/325—Irradiation devices or lamp constructions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/10—Photocatalysts
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
    • G02B6/001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type the light being emitted along at least a portion of the lateral surface of the fibre
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/102—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type for infrared and ultraviolet radiation

Definitions

  • the present invention relates to a photocatalytic oxidation apparatus.
  • Photocatalytic oxidation (PCO) systems are known in the art for decomposing harmful pollutants to produce less harmful chemicals.
  • Such photocatalytic oxidation systems generally comprise a light source and a photocatalytic material.
  • the light source is arranged to shine light onto the catalytic material to cause a reaction to occur that produces radicals.
  • the radicals degrade pollutants, for example, volatile organic compounds (VOCs), to produce less harmful chemicals such as water (H 2 0) and carbon dioxide (C0 2 ).
  • VOCs volatile organic compounds
  • the air cleaner has a filter material which includes an optical fibre layer.
  • the filter material is coated with a
  • the photocatalyst is irradiated by a light source to activate the photocatalyst to kill harmful microorganisms.
  • CN102626614 discloses a method of preparing a photocatalytic material. The method comprises coating an optical fibre with titanium dioxide.
  • a photocatalytic oxidation apparatus comprising: a light source with a light emitting surface and the light source comprising a lamp operable to generate a light output; and, a photocatalytic layer adjacent the light emitting surface comprising photocatalytic material and a plurality of light transmittal regions configured to allow light emitted from the light emitting surface to irradiate photocatalytic material adjacent the light transmittal regions.
  • At least one of the light transmittal regions comprises a space or gap in the photocatalytic layer.
  • the photocatalytic oxidation apparatus is in particular in the form of an air purifier or filter, a water purifier or filter, an air conditioner or an HVAC system.
  • the light transmittal regions of the photocatalytic layer allow for light emitted from the light emitting surface to irradiate a portion of the photocatalytic material that is spaced from the light emitting surface.
  • the light transmittal regions therefore allow for hydroxyl radicals to be formed that can react with the pollutants in fluid flowing over the surface of the photocatalytic material, regardless of the thickness of the photocatalytic material.
  • the gap or space in the photocatalytic layer may include a gap or space in the photocatalytic material comprised by the layer.
  • each light transmittal region comprises a gap in the photocatalytic layer.
  • the photocatalytic material partially covers the light emitting surface.
  • the light transmittal regions may be arranged in a regular array.
  • the light transmittal regions are each configured to allow light emitted from the light emitting surface to irradiate a portion of the photocatalytic material spaced from the light emitting surface.
  • the light emitting surface may comprise a planar surface and may comprise a plate-shaped light guide.
  • the light source comprises a cylindrical light guide.
  • the light source comprises an optical fibre.
  • the light emitting surface may comprise a plurality of light outcoupling structures.
  • the light outcoupling structures may each comprise a roughened surface area of the light source.
  • each light transmittal region overlies a light outcoupling structure.
  • the photocatalytic material may comprise titanium dioxide.
  • the light source may comprise a light generator.
  • the light generator comprises an ultraviolet light generator.
  • a fluid treatment apparatus comprising a photocatalytic oxidation apparatus according to the invention.
  • the fluid treatment device comprises first and second photocatalytic oxidation apparatus, wherein at least a portion of the light emitting surface of the first photocatalytic oxidation apparatus faces the light emitting surface of the second photocatalytic oxidation apparatus.
  • a filter comprising a plurality of filter fibres, wherein each filter fibre comprises a photocatalytic oxidation apparatus according to the invention, wherein the light source of each photocatalytic oxidation apparatus comprises an optical fibre.
  • the filter is a HEPA filter.
  • Fig. 1 is a schematic cross-sectional side view of a photocatalytic oxidation apparatus, shown for information purposes only;
  • Fig. 2 is a schematic side view of a photocatalytic oxidation apparatus according to an embodiment of the invention
  • Fig. 3 is a schematic cross-sectional side view of a portion of the photocatalytic oxidation apparatus of Fig. 2;
  • Fig. 4 is a schematic side view of a photocatalytic oxidation apparatus according to another embodiment of the invention.
  • Fig. 5 is a schematic cross-sectional front view of the photocatalytic oxidation apparatus of Fig. 4, viewed along line X-X shown in Fig. 4. DETAILED DESCRIPTION OF THE EMBODIMENTS
  • the photocatalytic oxidation apparatus 1 comprises a light source 2 and a layer of photocatalytic material 3.
  • the photocatalytic oxidation apparatus 1 forms part of a fluid treatment device (not shown), for example, an air or water purification device.
  • the light source 2 comprises a light generator 4 and a light guide 5.
  • the light guide 5 comprises a plate of transparent material, such as glass, polycarbonate or acrylic resin.
  • the light generator 4 is configured to radiate ultraviolet (UV) rays and may comprise a UV lamp or UV light emitting diode.
  • the light generator 4 is arranged to shine light into a first end 5A of the light guide 5 such that the light propagates through the light guide 5 and is radiated out of a light emitting surface 6 of the light guide 5.
  • the light emitting surface 6 is a major planar surface of the light guide 5.
  • the layer of photocatalytic material 3 comprises titanium dioxide (Ti0 2 ).
  • the layer of photocatalytic material 3 is provided on the light emitting surface 6 of the light guide 5 and covers the entire light emitting surface 6.
  • the layer of photocatalytic material 3 comprises an inner surface 3A that is adjacent to the light emitting surface 6 and an outer surface 3B that is remote to the light emitting surface 6.
  • the outer surface 3B of the layer of photocatalytic material 3 faces away from the light emitting surface 6.
  • the fluid treatment device (not shown) is configured to draw a fluid to be treated, for example, air or water, into the fluid treatment device via an inlet (not shown).
  • the fluid flows over the outer surface 3B of the layer of photocatalytic material 3 (in the direction of arrow 'A' in Fig. 1) and is subsequently expelled from an outlet (not shown) of the fluid treatment device.
  • the light generator 4 is powered to shine UV rays into the first end 5A of the light guide 5.
  • the UV rays propagate through the light guide 5 and are radiated from the light emitting surface 6 such that the inner surface 3A of the layer of photocatalytic material 3 is irradiated by the UV rays (Fig. 1 shows a schematic illustration of a photon P irradiating the inner surface 3A).
  • This causes electrons in the titanium dioxide of the layer of photocatalytic material 3 to be promoted from the valence band to the conduction band and thus electron-hole pairs are created that generate free radicals, including hydroxyl radicals (OH*).
  • the layer of photocatalytic material 3 has a sufficiently small thickness T that the hydroxyl radicals are generated at the outer surface 3B of the photocatalytic layer 3 despite the fact that the UV rays irradiate the inner surface 3A of the layer of photocatalytic material 3. Therefore, the hydroxyl radicals react with pollutants in the fluid flow A passing over the outer surface 3B of the layer of photocatalytic material 3 to decompose the pollutants.
  • the hydroxyl radicals will oxidise volatile organic compounds (VOCs) present in the fluid flow A such that the volatile organic compounds are decomposed into less harmful chemicals, such as, carbon dioxide and water.
  • VOCs volatile organic compounds
  • the layer of photocatalytic material 3 it has been found that it is difficult to manufacture the layer of photocatalytic material 3 to the requisite small thickness T necessary to enable the hydroxyl radicals to be generated at the outer surface 3B of the layer of photocatalytic material 3. If the thickness T of the layer of photocatalytic material 3 is too large then hydroxyl radicals will not be generated at the outer surface 3B of the layer of photocatalytic material 3 and thus the photocatalytic oxidation apparatus will not be effective at decomposing pollutants in the fluid flow A proximate to the outer surface 3B. Therefore, the layer of photocatalytic material 3 must be manufactured to a high tolerance to ensure that it is the correct thickness T, which can make manufacture of the photocatalytic oxidation apparatus 1 difficult and/or expensive.
  • the photocatalytic oxidation apparatus 10 comprises a light source 11 and a photocatalytic layer 12.
  • the photocatalytic oxidation apparatus 10 forms part of a fluid treatment device (not shown), for example, an air or water purification device.
  • the light source 11 comprises a light generator 13 and a light guide 14.
  • the light guide 14 comprises a plate of transparent material, such as glass, polycarbonate or acrylic resin.
  • a major planar surface of the light guide 14 comprises a light emitting surface
  • the light emitting surface 15 comprises a plurality of outcoupling structures 16. Each outcoupling structure 16 comprises a roughened area of the light emitting surface 15.
  • the light generator 13 may comprise, for example, a UV lamp or a UV light emitting diode.
  • the light generator 13 is configured to radiate UV rays into a first end 14A of the light guide 14 such that the light propagates through the light guide 14 and is radiated out of the light emitting surface 15 of the light guide 14. More specifically, the light propagates through the light guide 14 and irradiates one of the outcoupling structures 16.
  • the roughened area of the outcoupling structure 16 scatters the light such that it is emitted from the light emitting surface 15 (as shown in Fig. 3).
  • the photocatalytic layer 12 comprises a photocatalytic material 17 and a plurality of light transmittal regions 18.
  • the photocatalytic material 17 comprises titanium dioxide (Ti0 2 ).
  • the photocatalytic material 17 is provided on the light emitting surface 15 such that an inner surface 17 A of the photocatalytic material 17 contacts the light emitting surface 15.
  • the light transmittal regions 18 each comprise a gap in the photocatalytic material 17 wherein the photocatalytic material 17 does not cover the light emitting surface 15. Therefore, the photocatalytic material 17 partially covers the light emitting surface 15.
  • the photocatalytic layer 12 is arranged on the light emitting surface 15 such that each light transmittal region 18 overlies a corresponding outcoupling structure 16.
  • the fluid treatment device (not shown) is configured to draw a fluid to be treated, for example, air or water, into the fluid treatment device via an inlet (not shown).
  • the fluid flows over the photocatalytic layer 12 (for example, in the direction of arrow 'A' in Fig. 3) and is subsequently expelled from an outlet (not shown) of the fluid treatment device.
  • the light generator 13 is powered to shine UV rays into the first end
  • the UV rays propagate through the light guide 14 and are radiated from the outcoupling structures 16 of the light emitting surface 15 such that the UV rays enter the light transmittal regions 18 and then irradiate on photocatalytic material 17 that is adjacent to the light transmittal regions 18 (Fig. 3 schematically illustrates a UV ray L propagating through the light guide 14). As described above, this causes free radicals to be generated, including hydroxyl radicals (OH*). The hydroxyl radicals decompose pollutants in the fluid flow A into less harmful chemicals and the purified fluid flow is subsequently expelled from the outlet (not shown) of the fluid treatment device.
  • OH* hydroxyl radicals
  • the light transmittal regions 18 therefore allow for hydroxyl radicals to be formed that can react with the pollutants in the fluid flow A, regardless of the thickness of the photocatalytic material 17. This is because the light transmittal regions 18 allow for light emitted from the light emitting surface 15 to irradiate a portion of the photocatalytic material 17 that is spaced from the light emitting surface 15 and therefore is in contact with the fluid flow A. Thus, it is not necessary that the photocatalytic material 17 is applied in a thin layer to the light emitting surface 15 and so manufacture of the photocatalytic oxidation apparatus 10 of Figs. 2 and 3 may be easier than the photocatalytic oxidation apparatus 1 of Fig. 1.
  • the photocatalytic oxidation apparatus 10 did not comprise light transmittal regions 18 then the UV rays would only irradiate the inside surface 17 A of the photocatalytic material 17, which is generally opaque, and so would not irradiate a portion of the
  • photocatalytic material 17 that is in contact with the fluid flow A.
  • the light guide 14 is pate shaped and has a planar surface which comprises the light emitting surface 15.
  • the light guide has a different shape.
  • the light guide may instead be cylindrical such that the light emitting surface is curved.
  • the photocatalytic layer 12 is provided on a single light emitting surface 15 of the photocatalytic oxidation apparatus 10.
  • the light guide comprises a plurality of light emitting surfaces and a photocatalytic layer is provided on each light emitting surface.
  • the light guide comprises first and second light emitting surfaces on opposite sides of the light guide and a photocatalytic layer is provided on each of the first and second light emitting surfaces.
  • the photocatalytic oxidation apparatus 20 comprises a light source 21 and a photocatalytic layer 22.
  • the photocatalytic oxidation apparatus 20 forms part of a fluid treatment device (not shown).
  • the light source 21 comprises a light generator 23 and an optical fibre 24.
  • the optical fibre 24 may be manufactured from a transparent material, for example, silica or fluoride glass.
  • the peripheral surface of the optical fibre 24 comprises a light emitting surface 25.
  • the light emitting surface 25 comprises a plurality of outcoupling structures (not shown). Each outcoupling structure comprises a roughened area of the light emitting surface 25.
  • the light generator 23 is configured to radiate UV rays into a first end 24A of the optical fibre 24 such that the light propagates through the optical fibre 24 and is radiated out of the light emitting surface 25 of the optical fibre 24. More specifically, the light propagates through the optical fibre 24 and irradiates one of the outcoupling structures, wherein the light is scattered such that it is emitted from the light emitting surface 25.
  • the photocatalytic layer 22 comprises a photocatalytic material 27 and a plurality of light transmittal regions 28.
  • the photocatalytic material 27 comprises titanium dioxide and is provided on the light emitting surface 25 such that an inner surface 27A of the photocatalytic material 27 contacts the light emitting surface 25.
  • the light transmittal regions 28 each comprise a gap in the photocatalytic material 27 wherein the photocatalytic material 27 does not cover the light emitting surface 25. Therefore, the photocatalytic material 27 partially covers the light emitting surface 25.
  • the photocatalytic material 27 is arranged as a plurality of discrete bands 27 that subtend entirely about the central axis of the optical fibre 24.
  • a gap 28 is provided between adjacent bands 27.
  • Each gap 28 forms a light emitting region 28.
  • each band of photocatalytic material only subtends partially about the central axis of the optical fibre.
  • the bands are joined together by photocatalytic material such that the bands are not discrete.
  • the optical fibre 24 may form a core and the photocatalytic material 27 may form an outer shell of the photocatalytic oxidation apparatus 10.
  • the photocatalytic layer 22 is arranged on the light emitting surface 25 such that each light transmittal region 28 overlies a corresponding outcoupling structure.
  • the fluid treatment device (not shown) is configured to draw a fluid to be treated, for example, air or water, into the fluid treatment device via an inlet (not shown).
  • the fluid flows over the photocatalytic layer 22 and is subsequently expelled from an outlet (not shown) of the fluid treatment device.
  • the light generator 23 is powered to shine UV rays into the first end 24A of the optical fibre 24.
  • the UV rays propagate through the optical fibre 24 and are radiated from the outcoupling structures of the light emitting surface 25 such that the UV rays enter the light transmittal regions 28 and then irradiate on photocatalytic material 27 that is adjacent to the light transmittal regions 28.
  • this causes free radicals to be generated, including hydroxyl radicals (OH*).
  • OH* hydroxyl radicals
  • the hydroxyl radicals decompose pollutants in the fluid flow into less harmful chemicals and the purified fluid flow is subsequently expelled from the outlet (not shown) of the fluid treatment device.
  • the light transmittal regions 28 therefore allow for hydroxyl radicals to be formed that can react with the pollutants in the fluid flow, without requiring that the thickness of the photocatalytic material 27 is made very small. This is because the light transmittal regions 28 allow for light emitted from the light emitting surface 25 to irradiate a portion of the photocatalytic material 27 that is adjacent the light transmittal regions 28 and is thus in contact with the fluid flow. Therefore, manufacture of the photocatalytic oxidation apparatus 20 of Figs. 4 and 5 may be easier than the photocatalytic oxidation apparatus 1 of Fig. 1.
  • the photocatalytic oxidation apparatus 20 did not comprise light transmittal regions 28 then the UV rays would only irradiate the inside surface 27A of the photocatalytic material 27, which is generally opaque, and so would not irradiate a portion of the
  • photocatalytic material 27 that is in contact with the fluid flow.
  • the fluid treatment device (not shown) comprises a filter
  • the filter comprises a plurality of filter fibres each comprising an optical fibre provided with a photocatalytic layer. Therefore, any light emitted by the light emitting surface of each optical fibre that does not irradiate the photocatalytic material thereon may irradiate photocatalytic material of another filter fibre of the filter to react with the photocatalytic material of said another filter fibre. Thus, the efficiency of the fluid treatment device is increased.
  • the filter fibres may be woven into a felt.
  • the filter is a high-efficiency particulate arrestance (HEPA) filter.
  • each light transmittal region 18, 28 comprises a gap or space or aperture in the photocatalytic material 17, 27 such that substantially no photocatalytic material 17, 27 is provided on the light emitting surface 15, 25 at each of the light transmittal regions 18, 28.
  • layer of photocatalytic material is provided on the light emitting surface at one or more of the light transmittal regions that is sufficiently thin, or sufficiently transparent, to allow for light to pass through the photocatalytic material at each of the light transmittal regions to irradiate photocatalytic material adjacent the light transmittal regions.
  • the light transmittal regions 18, 28 are arranged in a repeating pattern or regular array in the photocatalytic layer 12, 22.
  • the light transmittal regions are arranged in an irregular or random arrangement in the photocatalytic layer.
  • the photocatalytic material 17, 27 comprises titanium dioxide.
  • photocatalytic oxidation apparatus comprising other photocatalytic materials are intended to fall within the scope of the invention.
  • the photocatalytic material may instead comprise a different metal oxide, such as, zinc oxide (ZnO), tin dioxide (Sn0 2 ) or cerium oxide (Ce0 2 ).
  • the light generator 13, 23 is configured to generate UV rays.
  • the light generator is instead configured to generate light having a different frequency, for example, visible light.
  • the frequency of the light should be such to promote electrons in the photocatalytic material from the valence band to the conduction band.
  • the fluid treatment device may be in the form of, for example, an air purifier, a water purifier or filter, an air conditioner or a HVAC system.
  • Embodiments of the photocatalytic oxidation apparatus and the fluid treatment device are hence suitable in particular for domestic fluid treatment applications.
  • a domestic photocatalytic oxidation apparatus may be provided for purifying, filtering or otherwise treating air or water within a home or domestic setting or environment.
  • Particular examples of a domestic photocatalytic oxidation apparatus may include a home or domestic air purifier (e.g. a standalone air purifier for purifying air in a room or space), or a home or domestic water purifier such as for use in home water supply system to provide purified drinking water for instance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • General Chemical & Material Sciences (AREA)
  • Epidemiology (AREA)
  • Analytical Chemistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physical Water Treatments (AREA)
  • Catalysts (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

La présente invention concerne un appareil (10) d'oxydation photocatalytique comprenant une source de lumière (11) et une couche photocatalytique (12). La source de lumière (11) comprend une surface électroluminescente (15). La couche photocatalytique (12) est adjacente à la surface électroluminescente (15) et comprend un matériau photocatalytique (17) et une pluralité de régions (18) de transmission de lumière. Les régions (18) de transmission de lumière sont conçues pour permettre à la lumière (5) émise par la surface électroluminescente (15) d'irradier le matériau photocatalytique (17) au voisinage des régions (18) de transmission de lumière.
PCT/EP2016/082872 2015-12-30 2016-12-29 Appareil d'oxydation photocatalytique WO2017114918A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN2015099834 2015-12-30
CNPCT/CN2015/099834 2015-12-30
EP16151432.8 2016-01-15
EP16151432 2016-01-15

Publications (1)

Publication Number Publication Date
WO2017114918A1 true WO2017114918A1 (fr) 2017-07-06

Family

ID=57794272

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/082872 WO2017114918A1 (fr) 2015-12-30 2016-12-29 Appareil d'oxydation photocatalytique

Country Status (1)

Country Link
WO (1) WO2017114918A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993017971A1 (fr) * 1992-03-05 1993-09-16 Board Of Regents, The University Of Texas System Matieres et procedes permettant la photocatalyse amelioree de composes organiques
EP1132133A1 (fr) * 2000-03-07 2001-09-12 NanoPoudres Technologies Réacteurs photocatalytiques à base de dioxyde de titane sur support silice pour le traitement de l'air et de l'eau
US20030026585A1 (en) * 1998-09-02 2003-02-06 Keiji Iimura Photocatalyst apparatus, method of manufacture thereof and photocatalyst reactor
US20080236183A1 (en) * 2005-11-15 2008-10-02 Keiji Iimura Refrigerator having photocatalyst
US20100029157A1 (en) * 2006-12-20 2010-02-04 Brochier Technologies Fabric web having photocatalysis-based pollution control properties
US20100054988A1 (en) * 2008-08-29 2010-03-04 Kwangyeol Lee Photocatalytic nanocapsule and fiber for water treatment
US20150075384A1 (en) * 2012-05-08 2015-03-19 Korea Institute Of Energy Research Antimicrobial filter adopting optical fibers and air cleaner comprising same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993017971A1 (fr) * 1992-03-05 1993-09-16 Board Of Regents, The University Of Texas System Matieres et procedes permettant la photocatalyse amelioree de composes organiques
US20030026585A1 (en) * 1998-09-02 2003-02-06 Keiji Iimura Photocatalyst apparatus, method of manufacture thereof and photocatalyst reactor
EP1132133A1 (fr) * 2000-03-07 2001-09-12 NanoPoudres Technologies Réacteurs photocatalytiques à base de dioxyde de titane sur support silice pour le traitement de l'air et de l'eau
US20080236183A1 (en) * 2005-11-15 2008-10-02 Keiji Iimura Refrigerator having photocatalyst
US20100029157A1 (en) * 2006-12-20 2010-02-04 Brochier Technologies Fabric web having photocatalysis-based pollution control properties
US20100054988A1 (en) * 2008-08-29 2010-03-04 Kwangyeol Lee Photocatalytic nanocapsule and fiber for water treatment
US20150075384A1 (en) * 2012-05-08 2015-03-19 Korea Institute Of Energy Research Antimicrobial filter adopting optical fibers and air cleaner comprising same

Similar Documents

Publication Publication Date Title
JP6771269B2 (ja) 空気浄化装置
US11920828B2 (en) System and method for photoelectrochemical air purification
US9974881B2 (en) Air purifying apparatus using ultra violet light emitting diode
KR101924133B1 (ko) 살균기능이 포함된 공기청정기
JP5467283B2 (ja) 光触媒エレメント及びこれを用いた紫外線空気清浄機
KR20210065023A (ko) 살균과 이온화 및 광촉매 기능을 구비한 통합형 공기청정 모듈
KR101442155B1 (ko) 광섬유 필터를 이용한 공기청정기
KR20170105805A (ko) 광촉매를 이용한 공기정화장치
US20050008549A1 (en) Photocatalytic lamp
WO2017114918A1 (fr) Appareil d'oxydation photocatalytique
JP2005343427A (ja) 車載型空気清浄装置
KR200340227Y1 (ko) 광촉매를 이용한 공기살균기
KR20150062549A (ko) 자외선 광조사부 및 메쉬형 필터를 구비하는 공기 정화 장치
JPH10235202A (ja) 光触媒体および空気清浄装置
KR20080075592A (ko) 광촉매 필터 및 이를 이용한 공조기의 살균 장치
JP3749721B2 (ja) 空気浄化装置
KR102202544B1 (ko) 광화학반응에 의한 고효율의 공기살균 에어덕트 및 공기청정장치
KR101351174B1 (ko) 광촉매를 이용한 정화필터
JP2018140330A (ja) ハニカムコアの光触媒システム
KR20150062725A (ko) 광차폐영역을 구비하는 메쉬형 필터를 포함하는 공기 정화 장치
TW201411066A (zh) 光觸媒空氣濾清器及其製造方法
JP2000316373A (ja) 農産物から発生するエチレンガスの光触媒ガス分解装置
KR20040005760A (ko) 측면발광광섬유를 이용한 오염물질 정화시스템
KR102659262B1 (ko) 반사막이 구비된 공기정화장치 및 그 제조방법
JP2005199874A (ja) 車載型空気清浄装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16825792

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16825792

Country of ref document: EP

Kind code of ref document: A1