WO2014080830A1 - 空気浄化装置 - Google Patents
空気浄化装置 Download PDFInfo
- Publication number
- WO2014080830A1 WO2014080830A1 PCT/JP2013/080794 JP2013080794W WO2014080830A1 WO 2014080830 A1 WO2014080830 A1 WO 2014080830A1 JP 2013080794 W JP2013080794 W JP 2013080794W WO 2014080830 A1 WO2014080830 A1 WO 2014080830A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air
- plate
- photocatalyst
- box
- air purification
- Prior art date
Links
- 239000011941 photocatalyst Substances 0.000 claims abstract description 72
- 239000000463 material Substances 0.000 claims abstract description 41
- 239000003463 adsorbent Substances 0.000 claims abstract description 38
- 238000004887 air purification Methods 0.000 claims description 36
- 229910052751 metal Inorganic materials 0.000 claims description 36
- 239000002184 metal Substances 0.000 claims description 36
- 239000000758 substrate Substances 0.000 claims description 32
- 238000005507 spraying Methods 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 230000002209 hydrophobic effect Effects 0.000 claims description 5
- 238000005192 partition Methods 0.000 description 42
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 34
- 239000002245 particle Substances 0.000 description 24
- 239000002002 slurry Substances 0.000 description 23
- 239000007921 spray Substances 0.000 description 18
- 238000009833 condensation Methods 0.000 description 17
- 230000005494 condensation Effects 0.000 description 17
- 239000010457 zeolite Substances 0.000 description 16
- 229910021536 Zeolite Inorganic materials 0.000 description 15
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 15
- 238000000034 method Methods 0.000 description 15
- 238000007751 thermal spraying Methods 0.000 description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 239000007789 gas Substances 0.000 description 13
- 239000004408 titanium dioxide Substances 0.000 description 13
- 238000000746 purification Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000004568 cement Substances 0.000 description 8
- 239000010949 copper Substances 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 239000011651 chromium Substances 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- 239000000057 synthetic resin Substances 0.000 description 6
- 229920003002 synthetic resin Polymers 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 230000001699 photocatalysis Effects 0.000 description 4
- 230000002940 repellent Effects 0.000 description 4
- 239000005871 repellent Substances 0.000 description 4
- 230000004043 responsiveness Effects 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000004094 surface-active agent Substances 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 150000004696 coordination complex Chemical class 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000002612 dispersion medium Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000010893 paper waste Substances 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000011164 primary particle Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- -1 titanium alkoxide Chemical class 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910000809 Alumel Inorganic materials 0.000 description 1
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 241000005398 Figaro Species 0.000 description 1
- 241000080590 Niso Species 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910001179 chromel Inorganic materials 0.000 description 1
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002296 dynamic light scattering Methods 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- DECCZIUVGMLHKQ-UHFFFAOYSA-N rhenium tungsten Chemical compound [W].[Re] DECCZIUVGMLHKQ-UHFFFAOYSA-N 0.000 description 1
- 239000011163 secondary particle Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
Images
Classifications
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- 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
-
- 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
-
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- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- 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
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- 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
- B01D53/81—Solid phase processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B01D53/869—Multiple step processes
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
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- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0215—Coating
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- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D2253/25—Coated, impregnated or composite adsorbents
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- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
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- B01D2255/20707—Titanium
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D2255/20776—Tungsten
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D—SEPARATION
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- B01D2255/20—Metals or compounds thereof
- B01D2255/209—Other metals
- B01D2255/2094—Tin
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D—SEPARATION
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
Definitions
- the present invention relates to an air purification device that purifies air by the function of a photocatalyst.
- Photocatalysts such as titanium oxide exhibit a function of decomposing organic substances when irradiated with light.
- Many various products using this function of the photocatalyst have been proposed.
- devices and filters that purify air by decomposing odor (organic matter) components in the air with a photocatalyst have been actively developed.
- what improves a deodorizing rate by combining a photocatalyst with an adsorbent (refer patent document 1), or what improves the decomposition rate of ethylene by combining a photocatalyst and a zeolite (patent document) 2) has been proposed.
- the conventional air purification apparatus has a structure that allows air to pass through the base material to which the photocatalyst is attached, many catalysts cannot be attached to the base material, and the purification performance is insufficient.
- the function of the photocatalyst is expressed using a light source such as black light, improvement is desired from the viewpoint of running cost.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide an air purification device that has excellent purification performance and can reduce running costs.
- An air purification apparatus that meets the above-mentioned object, a box having an air intake port and an air discharge port, In the air purification apparatus provided with the plate material having the adsorbent and the photocatalyst attached to at least one surface side, disposed in the box,
- the box has a light intake window;
- the plate member is disposed along an air flow path formed between the air intake port and the air discharge port, with the one surface side facing the light intake window.
- the plate material since the plate material has the adsorbent and the photocatalyst, it can be decomposed by the photocatalyst while adsorbing organic substances contained in the air such as exhaust gas.
- the plate material is arranged along the air flow path, that is, the air to be purified is structured to flow along this plate material, so use a plate material with a sufficient amount of photocatalyst attached. Can improve the purification performance.
- sunlight can be taken in and the function of a photocatalyst can be expressed, running cost can be suppressed.
- one surface side of the plate material faces the light intake window means that when one side of the plate material is viewed from the outside of the light intake window, the one surface side of the plate material is visible.
- the plate is not limited to a state in which one surface of the plate faces in parallel with the light intake window.
- the plate material is disposed in a wave shape or a zigzag shape in the air flow direction.
- the plate material is disposed in a wave shape or a zigzag shape in the air flow direction.
- the box has a metal member exposed on the inner surface side and having a specific heat smaller than that of the adsorbent.
- the air purification apparatus according to the present invention is usually installed outdoors because it is operated by sunlight. For this reason, there is a high possibility that condensation will occur inside the box due to a difference in temperature between day and night, and this condensation may be adsorbed by the adsorbent, and the functions of the adsorbent and the photocatalyst may deteriorate.
- condensation can be preferentially generated on the surface of the metal member, and the occurrence of condensation on the plate material can be suppressed.
- the temperature inside the box rises quickly, and the resulting condensation evaporates in a relatively short time. Can be made.
- the metal member is one or both of a side plate and a bottom plate of the box.
- action can be effectively expressed by using the side plate and / or bottom plate which have a certain magnitude
- the metal member is a fixing member that fixes the plate member.
- the plate member has a substrate containing the adsorbent, and the photocatalyst adheres to the one surface side of the plate member by application or spraying to the one surface side of the substrate. It is preferable. In this way, the adsorbent is sufficiently present on the other surface side of the substrate, while the photocatalyst does not adhere or decreases. Therefore, even when condensation occurs, moisture is preferentially adsorbed on the other surface side of the substrate, and the influence on the photocatalyst adhering to the one surface side can be suppressed.
- the adsorbent has a hydrophobic property.
- the box is disposed to be inclined. By doing in this way, the taking-in efficiency of sunlight can be improved. Further, since the bottom plate of the box is also inclined, the dew condensation generated on the bottom plate can be efficiently and easily discharged outside the box.
- the air purification apparatus according to the present invention has high purification performance and can reduce running costs.
- FIG. 1 is a schematic plan view of an air purification device according to an embodiment of the present invention.
- FIG. 2 is a schematic cross-sectional view taken along line AA in FIG. 1. It is a typical side view which shows the installation state of the air purification apparatus. It is a schematic diagram of the high-speed thermal spraying apparatus used for manufacture of the air purification apparatus.
- an air purification device 10 includes a box 11, three partition plates 12a to 12c disposed in the box 11, and an adsorbent. And 16 plate members 13 each having a photocatalyst.
- the box 11 is a substantially rectangular parallelepiped, and has a light intake window 14 serving as a top plate, four side plates 15a to 15d, and a bottom plate 16. Further, the box 11 has an air intake port 17 and an air exhaust port 18 provided in one side plate 15a.
- the size of the box 11 is not particularly limited, and can be appropriately set according to the installation location, the amount of air (exhaust gas etc.) to be processed, and the like.
- the length may be 50 cm to 2 m
- the width is 1 m to 10 m
- the height is 5 cm to 30 cm.
- the light intake window 14 is a rectangular plate-shaped body made of a transparent material.
- the material of the light intake window 14 is not particularly limited as long as it is transparent and has predetermined strength and durability. Examples thereof include glass, synthetic resins such as acrylic resin, PET resin, and polyolefin resin. be able to.
- the four side plates 15a to 15d are rectangular plate-like bodies, and are arranged so as to connect the respective edges of the light intake window 14 and the respective edges of the bottom plate 16.
- the material of the side plates 15a to 15d is not particularly limited, and may be transparent or opaque. Specific examples of the material for the side plates 15a to 15d include metal, ceramics, glass, synthetic resin, and wood. Metal is preferable, and a metal having a specific heat smaller than that of the adsorbent of the plate 13 is more preferable. By using such a metal member for the side plates 15a to 15d, condensation is preferentially generated on the surfaces of the side plates 15a to 15d at night and the like, and the occurrence of condensation on the plate material 13 can be suppressed.
- the metal side plates 15a to 15d having a small specific heat, when the temperature rises in the morning, etc., or when high temperature exhaust gas is supplied, the temperature rise inside the box 11 becomes faster, and the resulting condensation is relatively short. Can be evaporated in time.
- Examples of the metal member used for the side plates 15a to 15d include iron, aluminum, copper, titanium, or alloys thereof (stainless steel, galvalume steel, etc.). Further, the metal member may be subjected to a surface treatment such as plating or resin coating in order to prevent corrosion.
- an air intake port 17 for taking in air (exhaust gas or the like) into the box 11 and an air discharge port 18 for discharging this air once taken out of the box 11 are provided.
- the air intake 17 is connected to a duct 24 for exhaust gas from a factory.
- the air intake port 17 may be provided with a flow rate adjustment valve for adjusting the amount of air to be taken in.
- the air discharge port 18 is formed so that the bottom plate 16 side (the back side in FIG. 1) is open and air is discharged substantially downward.
- the bottom plate 16 is a plate-like body that is disposed opposite to the light intake window 14 (top plate) and has the same shape (rectangle) as the light intake window 14.
- Examples of the material of the bottom plate 16 include metals, ceramics, glass, synthetic resin, and wood.
- metals are preferable, and specific heat is higher than the adsorbent of the plate material 13. Smaller metals are more preferred.
- Examples of the metal member used for the bottom plate 16 include iron, aluminum, copper, titanium, and alloys thereof (stainless steel, galvalume steel, etc.). Further, the metal member may be subjected to a surface treatment such as plating or resin coating in order to prevent corrosion.
- a plurality of drain grooves are formed at substantially equal intervals in a portion where the side plates 15d are laminated on the inner surface of the bottom plate 16 (lower end edge portion when being inclined as shown in FIG. 3).
- a drain hole is formed by the drain groove and the bottom surface of the side plate 15 d, and the dew condensation that occurs on the inner surface of the bottom plate 16 when it is disposed at an inclination can be discharged out of the system (outside the box 11).
- One or more fine grooves may be formed on the entire inner surface of the bottom plate 16.
- This groove can function as a flow path for condensation.
- This groove may be formed integrally with the drain groove. Since the bottom plate 16 has the groove on the entire inner surface in this way, the dew condensation generated on the surface of the bottom plate 16 can be efficiently discharged outside the system (outside the box 11) through the groove.
- This groove can be formed, for example, the same as or inclined with respect to the inclination direction (width direction) of the box 11.
- the three partition plates 12a to 12c are provided in parallel with each other at equal intervals along the longitudinal direction of the box 11 (in a direction perpendicular to the one side plate 15a). Further, the partition plates 12 a to 12 c are arranged perpendicular to the bottom plate 16. The length of the partition plates 12a to 12c is slightly shorter than the length of the bottom plate 16 in the longitudinal direction.
- the partition plates 12a and 12c are arranged so as to be connected to the side plate 15a and not to be connected to the side plate 15c at a position facing the side plate 15a.
- the partition plate 12b is arrange
- the partition plates 12a to 12c By arranging the partition plates 12a to 12c in this way, the air taken in from the air intake port 17 flows in a zigzag manner so as to reciprocate between the side plates 15a and 15c in the box 11, An air flow path is formed so as to be finally discharged from the air discharge port 18.
- the thickness of the partition plates 12a to 12c is not particularly limited, and can be, for example, about 3 mm to 3 cm. Further, the height of the partition plates 12a to 12c is set so as to come into contact with the light intake window 14 and the bottom plate 16 of the box 11 together. That is, the height of the partition plates 12a to 12c is equal to the height of the side plates 15a to 15d of the box 11.
- the material of the partition plates 12a to 12c is not particularly limited, and examples thereof include metals, ceramics, glass, synthetic resin, and wood. For the same reason as the side plates 15a to 15d, it can be made of metal. Moreover, it is good also as a partition plate which has an adsorbent and / or a photocatalyst. As the partition plate having the adsorbent and / or the photocatalyst, a plate material similar to the plate material 13 described in detail later can be used.
- Each plate 13 has an adsorbent and a photocatalyst, and this photocatalyst is attached to at least one surface side.
- Each plate member 13 is disposed along the longitudinal direction of the box 11, that is, in parallel with the partition plates 12a to 12c. By being arranged in this way, the plate member 13 is arranged along (in parallel with) the air flow path formed by the box 11 and the partition plates 12a to 12c, respectively.
- Each of the four plate members 13 is arranged so as to form a mountain (ridge) by two pieces.
- plate material 13 will be arrange
- positions so that the one surface side to which the photocatalyst adheres may oppose the light intake window 14 (top plate) (one surface becomes the front side in FIG. 1, and the upper side in FIG. 2).
- the length of the plate 13 disposed between the side plate 15b and the partition plate 12a is the same as that of the partition plates 12a to 12c, and these are disposed so as to contact the side plate 15a and not to contact the side plate 15c.
- the length of the plate 13 disposed between the partition plate 12c and the side plate 15d is also the same as that of the partition plates 12a to 12c, and these are disposed so as to contact the side plate 15a and not to contact the side plate 15c.
- the length of the plate 13 disposed between the partition plate 12a and the partition plate 12b and between the partition plate 12b and the partition plate 12c is shorter than that of the partition plates 12a to 12c, and these are connected to the side plates 15a and 15c. It is arranged not to touch.
- the thickness of the plate 13 is not particularly limited, and can be, for example, 1 mm or more and 2 cm or less.
- the plate member 13 is formed by adsorbing an adsorbent and a photocatalyst on at least one surface side of a substrate formed of glass, ceramics, metal, synthetic resin, etc., or at least one surface side of the substrate containing the adsorbent
- the latter having a substrate containing an adsorbent, and the photocatalyst is attached to one surface of the substrate
- the adsorbent is sufficiently present on the other surface side of the substrate, while the photocatalyst is not attached or reduced. Therefore, even when condensation occurs, moisture is preferentially adsorbed on the other surface side of the substrate, and the influence on the photocatalyst adhering to the one surface side can be suppressed.
- zeolite As the adsorbent, known materials such as activated carbon, silica gel, and zeolite can be used. Among these, zeolite is preferable. As the zeolite, for example, one having a bulk specific gravity of 0.6 to 0.8 g / cm 3 , a specific surface area of 200 to 400 m 2 / g, and a pore diameter of 5 to 10 mm can be used.
- Hydrophobic adsorbents include hydrophobic zeolites with a high silica / alumina ratio (for example, HSZ series manufactured by Tosoh Corporation), and adsorbents such as zeolite that have been hydrophobized with a water repellent. Can be used.
- water repellent examples include alkoxysilanes such as methyltrimethoxysilane and phenyltriethoxysilane, and silazanes such as hexamethyldisilazane. Note that the substrate including the adsorbent may be subjected to a hydrophobizing treatment with this water repellent.
- the substrate containing an adsorbent examples include a substrate made only of an adsorbent such as silica gel and zeolite, and a substrate containing an adsorbent such as silica gel and zeolite and other inorganic materials (cement, pearlite, etc.). .
- an adsorbent such as silica gel and zeolite and other inorganic materials
- cement, pearlite, etc. cement, pearlite, etc.
- the porous property can be improved and the weight can be reduced.
- the content of the adsorbent such as zeolite in the substrate is preferably 50% by mass or more, and more preferably 70% by mass or more.
- the cement content in the substrate is preferably 5% by mass or more and 30% by mass or less.
- the binder function may not be sufficiently exhibited.
- the adsorptivity and the like may be reduced.
- the substrate may further contain other components such as waste paper.
- the substrate is preferably porous.
- the organic matter adsorbed on the other surface side to which the photocatalyst is not attached can be released from the one surface side to which the photocatalyst is attached, and this organic matter is decomposed. Can be done effectively.
- the photocatalyst is not particularly limited as long as it is a compound having a photocatalytic function, and a known one can be used.
- the photocatalytic function is a photo-semiconductor material, and when irradiated with light having energy larger than the band gap energy between the valence band and the conduction band, the electrons in the valence band are excited and conducted. It means a function that induces an oxidation-reduction reaction by transitioning to a band to become an excited electron and generating an electron-hole pair between a hole formed in the valence band and the excited electron.
- Examples of such a compound include titanium dioxide, tungsten oxide, tin oxide and the like, and titanium dioxide is preferable. Examples of titanium dioxide include those having a rutile crystal structure and those having an anatase crystal structure.
- Titanium dioxide adhered to porous zeolite in a dispersed state has improved photocatalytic activity because its local structure and electronic state change continuously.
- the photocatalyst is preferably a photocatalyst having visible light responsiveness.
- a photocatalyst having visible light responsiveness By using a photocatalyst having visible light responsiveness in this way, sunlight can be utilized more effectively during the purification action.
- the photocatalyst having visible light responsiveness refers to a photocatalyst that exhibits catalytic activity when irradiated with light in the visible light (360 nm to 830 nm) region in addition to light in the ultraviolet region.
- Examples of such a visible light responsive photocatalyst include (1) a titanium dioxide crystal lattice doped with one or more of nitrogen, carbon and sulfur atoms, and (2) a photocatalyst carrying a sensitizer. Can be mentioned.
- the visible light responsive photocatalyst (1) can be obtained by a known production method.
- titanium oxide can be obtained in a sulfur dope by a sol-gel method using a titanium alkoxide mixed with a sulfur source such as thiourea as a raw material.
- the sensitizer carried by the visible light responsive photocatalyst (2) means a sensitizer that generates excited electrons by visible light and supplies the excited electrons to a photocatalyst such as titanium dioxide.
- the sensitizer include metal hydroxides such as iron, copper, chromium, and nickel, oxyhydroxides, and oxides. Specifically, for example, CuO, Cu (OH) 2 , FeO (OH), Fe (OH) 3 , Ni (OH) 2 , NiO (OH), Cr (OH) 3 , Cr 2 O (OH) 4 , Cr 2 O 3 and the like can be mentioned.
- a known method such as coating or spraying can be used.
- thermal spraying it is preferable to adhere by thermal spraying.
- the thermal spraying method it is possible to suppress the use of binder components and the like, and the photocatalyst permeates into the substrate from the sprayed substrate surface, so that the exposure amount and adhesion amount of the photocatalyst can be increased, and the decomposition performance is improved.
- An example of a specific procedure when the thermal spraying method is used will be described later.
- the box 11 further includes a plurality of bar-shaped upper fixing members 19 and a plurality of bar-shaped lower fixing members 20.
- Each of the upper fixing member 19 and the lower fixing member 20 is exposed on the inner surface of the box 11 (that is, the light intake window 14 and the bottom plate 16), and in the width direction of the box 11, the side plate 15b and the partition plate 12a.
- the partition plate 12a and the partition plate 12b Between the partition plate 12a and the partition plate 12b, between the partition plate 12b and the partition plate 12c, and between the partition plate 12c and the side plate 15d.
- four upper fixing members 19 and lower fixing members 20 are arranged at substantially equal intervals in the longitudinal direction of the box 11.
- each upper fixing member 19 fixes the plate member 13 from above by a groove structure portion 22 provided in a direction perpendicular to the partition plates 12a to 12c and the plate member 13 in a plan view and below the upper fixing member 19. Is arranged.
- each lower fixing member 20 has the plate member 13 in a direction perpendicular to the partition plates 12a to 12c and the plate member 13 in plan view and the groove member 23 provided on the upper side of the lower fixing member 20 from the lower side. It is arranged to be fixed.
- the material of the upper fixing member 19 and the lower fixing member 20 is not particularly limited, and examples thereof include metal, ceramics, glass, synthetic resin, and wood. Metal is preferable, and the adsorbent that the plate member 13 has. A metal having a lower specific heat is more preferable. By using such a metal member for the upper fixing member 19 and the lower fixing member 20, condensation is preferentially generated on the surfaces of the upper fixing member 19 and the lower fixing member 20 at night and the like, and condensation on the plate 13 is performed. Can be suppressed. Further, by having the metal upper fixing member 19 and the lower fixing member 20 having a small specific heat, when the temperature rises in the morning, etc., or when high-temperature exhaust gas is supplied, the temperature rise inside the box 11 is accelerated, and occurs. Condensation can be evaporated in a relatively short time.
- the air purification apparatus 10 is arrange
- the air intake port 17 is arranged on the upper side and the air discharge port 18 is arranged on the lower side so as to be inclined in the width direction of the box 11.
- the inclination angle ⁇ may be set as appropriate according to the place (latitude) used, the season, etc., and may be, for example, 10 ° to 50 °.
- the plate member 13 since the plate member 13 has the adsorbent and the photocatalyst, it can be decomposed by the photocatalyst while adsorbing organic substances contained in the air such as exhaust gas taken in from the air intake port 17.
- the plate member 13 is arranged along the air flow path formed by the box 11 and the partition plates 12a to 12c, that is, the air to be purified flows along the plate member 13. Therefore, the plate material 13 to which a sufficient amount of the photocatalyst is attached can be used, and the purification performance can be improved.
- sunlight can be taken in and the function of a photocatalyst can be expressed, running cost can be suppressed.
- sunlight is taken in from the light taking-in window 14, and irradiates one surface side (upper surface side in FIG. 2) to which the photocatalyst adheres in each plate member 13.
- the air taken into the box 11 is surrounded by the plate 13 and the bottom plate 16, and the space on the opposite side to the one surface side of the plate 13 also circulates.
- the air is mixed, so that the decomposition proceeds sufficiently.
- the plate material 13 is arranged in a zigzag shape as viewed from the air flow direction (viewed in the left-right direction in FIG. 1, cross-sectional shape in FIG. 2). For this reason, both the irradiation area of the light to the plate 13 and the contact area with the circulating air can be increased, and the purification performance can be further enhanced.
- Slurry preparation process In this process, particles containing a photocatalyst and a dispersion medium are supplied to a container (for example, a stirring tank) to prepare a slurry.
- a container for example, a stirring tank
- the particles containing a photocatalyst include particles (photocatalyst particles) usually made of a photocatalyst, and may contain other particles (binder particles and the like).
- the content of photocatalyst particles (titanium dioxide particles and the like) in the slurry is usually 1% by mass to 30% by mass, preferably 3% by mass to 15% by mass, and more preferably 5% by mass to 10% by mass. .
- the content of the photocatalyst particles is less than 1% by mass, the thickness of the film obtained by thermal spraying becomes too small, and there is a possibility that sufficient functions cannot be expressed.
- this content exceeds 30% by mass, stress is generated inside the film obtained by thermal spraying due to the difference in thermal expansion coefficient between the film obtained by thermal spraying and the substrate, and cracks are likely to occur. Become.
- the diameter (secondary particle diameter) of the photocatalyst particles is, for example, from 0.5 ⁇ m to 10 ⁇ m, and more preferably from 1 ⁇ m to 5 ⁇ m.
- the primary particle diameter of the photocatalyst particles is preferably, for example, 10 nm or more and 50 nm or less.
- a water-soluble metal complex or a water-soluble metal salt such as iron, copper, chromium, or nickel may be contained in the slurry.
- These water-soluble metal complexes and water-soluble metal salts react with water when sprayed to become the above-mentioned hydroxide, oxyoxide or oxide, and are supported on the photocatalyst particles as a sensitizer.
- water-soluble metal complex examples include [Cu (NH 3 ) 4 ] 2+ , [Fe (CN) 6 ] 4 ⁇ , [Fe (CN) 6 ] 3 ⁇ , and the like.
- salt examples include FeCl 3 , Fe 2 (SO 4 ) 3 , Fe (NO 3 ) 3 , CuSO 4 , Cu (NO 3 ) 2 , CuCl 2 , Ni (NO 3 ) 2 , NiCl 2 , NiSO 4 , Cr (NO 3 ) 3 and the like.
- the content of the water-soluble metal complex and the water-soluble metal salt in the slurry is 0.05 parts by mass or more and 0.5 parts by mass as the metal component amount with respect to 100 parts by mass of the metal component amount (for example, titanium component amount) in the photocatalyst particles. It can be as follows.
- water is usually used, but other organic solvents such as alcohols and mixtures of water and organic solvents can also be used.
- the slurry can further contain a surfactant in order to enhance dispersibility.
- a surfactant include anionic surfactants such as polycarboxylic acid-based polymer surfactants and nonionic surfactants.
- content of surfactant 0.5 mass part or more and 3 mass parts or less are preferable with respect to 100 mass parts of particle
- the slurry can be prepared by supplying particles containing a photocatalyst and a dispersion medium to a container and stirring them. In addition, you may perform ultrasonic irradiation with stirring instead of stirring.
- thermal spraying process the slurry containing particles containing the photocatalyst prepared in the slurry adjustment process is sprayed onto the substrate surface.
- this thermal spraying can be performed by a known method, it is preferable to perform high-speed thermal spraying at a low temperature using a high-speed thermal spraying apparatus.
- high-speed thermal spraying apparatus By performing such spraying, for example, when anatase-type titanium dioxide particles are used as the photocatalyst particles, transformation to the rutile type during spraying is suppressed, and a sprayed coating with high catalytic activity can be obtained.
- an example of the high-speed spraying apparatus will be described with reference to FIG.
- a high-speed spraying device 30 shown in FIG. 4 mainly includes a spraying gun 31 and a slurry mixing unit 32 attached to the tip of the spraying gun 31.
- the slurry mixing unit 32 includes a cylindrical frame guide portion 33 (barrel) through which a thermal spray frame ejected from the tip of the thermal spray gun 31 passes, and the slurry (including a photocatalyst) in the thermal spray frame passing through the frame guide portion 33. And a slurry jet nozzle 34 for jetting the slurry into the thermal spray frame.
- the slurry stored in the slurry tank 36 is supplied to the slurry mixing unit 32 by the pump 35 while ejecting the spray frame from the spray gun 31 using the high-speed spray device 30.
- the thermal spray frame is formed by mixing a high-pressure combustion support gas (for example, air + oxygen) and a fuel gas (for example, kerosene) in a combustion chamber in the thermal spray gun 31, and igniting the mixed gas. Further, a substrate is arranged at the spray destination of the thermal spray frame.
- the slurry (particles including a photocatalyst, etc.) can collide with the substrate at a high speed on the flow of the thermal spray frame ejected from the tip of the frame guide portion 33, and a thermal spray coating is formed on the substrate. can do.
- the flame temperature is preferably 700 ° C. or higher and 2,000 ° C. or lower, and more preferably 750 ° C. or higher and 1,500 ° C. or lower.
- the frame ejection speed is preferably 800 m / sec or more and 2,000 m / sec or less.
- the temperature of the thermal spray flame is less than 700 ° C., the flame temperature becomes too low, and it becomes difficult to stably form a coating on the substrate surface.
- the temperature of the thermal spray flame exceeds 2000 ° C., the flame temperature becomes too high.
- anatase type titanium dioxide is used, the amount of titanium dioxide transformed from the anatase type to the rutile type increases, and titanium dioxide.
- the flame temperature is a temperature measured at a position 200 mm from the tip of the thermal spray gun 31 on the thermal spray frame center line.
- the temperature is measured using a thermocouple (for example, alumel / chromel up to 1,000 ° C, tungsten / tungsten rhenium above 1,000 ° C), and the tip of the thermocouple is inserted into the thermal spray frame. Let it be the value that was done.
- the present invention is not limited to the above-described embodiments, and the configuration thereof can be changed without changing the gist of the present invention.
- the number of partition plates and plate materials can be changed as appropriate.
- a single corrugated plate or the like can also be used.
- the photocatalyst may adhere to both surfaces of the plate material.
- the light intake window may be formed on the side plate together with the top plate instead of the top plate.
- the air purification apparatus having the shape shown in FIGS. 1 and 2 was produced, and was installed outdoors by being inclined as shown in FIG.
- the inclination angle ⁇ was 30 °.
- a substrate that has been subjected to a hydrophobic treatment by immersing the following zeolite board in a treatment liquid water repellent: KBM-13 manufactured by Shin-Etsu Silicone Co., Ltd., methyltrimethoxysilane
- the one to which titanium dioxide was attached by high-speed flame spraying was used.
- Zeolite board Composition
- ⁇ Zeolite manufactured by New Tohoku Chemical
- White cement manufactured by Taiheiyo Cement
- ⁇ Perlite Mitsubishi cement
- 4% by mass -Waste paper Newspaper
- 4% by mass Zeolite properties and particle size 0.2 mm or less 80%, 0.1 mm or less 70%
- Bulk specific gravity 0.65 to 0.7 g / cm 3 ⁇ Specific surface area 250-300m 2 / g ⁇ Pore diameter: 6.5 to 7 mm
- Water absorption 60-80% by mass Zeolite composition ⁇ SiO 2: 72.1 wt%, Al 2 O 3: 12.9 wt%, Fe 2 O 3: 0.7 wt%, CaO: 2.6 wt%, K 2 O: 2.1 mass %, Na 2 O: 1.8% by mass, H 2 O: 7.0% by mass, other: 0.8% by mass
- the flow rate of this exhaust gas is adjusted by a flow control valve, and the VOC concentration (ppm) at the time of supply to the air purifier and the VOC at the time of discharge under two conditions of 6.5 m / s and 5.6 m / s. Concentration (ppm) was measured.
- a handy TVOC monitor FTVR-02 manufactured by Figaro Giken was used for the measurement. The measurement results are shown in Table 1.
- the air purification apparatus according to the present invention can be suitably used as an air purification apparatus for factory exhaust gas, piggery, sewage treatment plants, etc. for the purpose of deodorization and deodorization.
- Air purification device 11: Box, 12a to 12c: Partition plate, 13: Plate material, 14: Light intake window, 15a to 15d: Side plate, 16: Bottom plate, 17: Air intake port, 18: Air exhaust Outlet, 19: upper fixing member, 20: lower fixing member, 21: inclined base, 22: groove structure, 23: groove structure, 24: duct, 30: high-speed spraying device, 31: spray gun, 32: slurry Mixing part, 33: Frame guide part, 34: Slurry jet nozzle, 35: Pump, 36: Slurry tank
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Abstract
Description
該函体内に配設され、吸着剤及び少なくとも一方の面側に付着する光触媒を有する板材と
を備える空気浄化装置において、
前記函体が光取込窓を有し、
前記板材は、前記一方の面側が前記光取込窓と対向し、かつ前記空気取込口と前記空気排出口との間に形成される空気流通経路に沿って配設されている。
本工程においては、光触媒を含む粒子及び分散媒を容器(例えば、攪拌槽)に供給してスラリーを調製する。
本工程においては、スラリー調整工程で調製した光触媒を含む粒子を含有するスラリーを基板表面に溶射する。この溶射は公知の方法で行うことができるが、高速溶射装置を用い、低温度の高速溶射を行うことが好ましい。このような溶射を行うことで、例えば光触媒粒子としてアナターゼ型の二酸化チタン粒子を用いた場合、溶射の際のルチル型への変態が抑制され、触媒活性の高い溶射皮膜を得ることができる。以下、図4を参照に高速溶射装置の一例を説明する。
ゼオライトボード(組成)
・ゼオライト(新東北化学社製):77質量%
・ホワイトセメント(太平洋セメント社製):15質量%
・パーライト(三井金属鉱業社製):4質量%
・古紙(新聞紙):4質量%
ゼオライト物性
・粒度:0.2mm以下80%、0.1mm以下70%
・嵩比重:0.65~0.7g/cm3
・比表面積250~300m2/g
・細孔径:6.5~7Å
・吸水率:60~80質量%
ゼオライト組成
・SiO2:72.1質量%、Al2O3:12.9質量%、Fe2O3:0.7質量%、CaO:2.6質量%、K2O:2.1質量%、Na2O:1.8質量%、H2O:7.0質量%、その他:0.8質量%
供給する空気として、塗装工程で生じるVOCを含む排ガスを用いた。この排ガスの流量を流量調整弁によって調整し、6.5m/s及び5.6m/sの2条件にて、空気浄化装置への供給の際のVOC濃度(ppm)と、排出の際のVOC濃度(ppm)とを測定した。測定には、フィガロ技研製ハンディTVOCモニターFTVR-02を使用した。測定結果を表1に示す。
Claims (8)
- 空気取込口及び空気排出口を有する函体と、
該函体内に配設され、吸着剤及び少なくとも一方の面側に付着する光触媒を有する板材と
を備える空気浄化装置において、
前記函体が光取込窓を有し、
前記板材は、前記一方の面側が前記光取込窓と対向し、かつ前記空気取込口と前記空気排出口との間に形成される空気流通経路に沿って配設されていることを特徴とする空気浄化装置。 - 請求項1記載の空気浄化装置において、
前記板材が空気流通方向視で波状又はジグザグ状に配設されていることを特徴とする空気浄化装置。 - 請求項1又は2記載の空気浄化装置において、
前記函体が、内面側に露出し、前記吸着剤より比熱の小さい金属部材を有することを特徴とする空気浄化装置。 - 請求項3記載の空気浄化装置において、
前記金属部材が、前記函体の側板及び底板のいずれか一方又は双方であることを特徴とする空気浄化装置。 - 請求項3記載の空気浄化装置において、
前記金属部材が、前記板材を固定する固定部材であることを特徴とする空気浄化装置。 - 請求項1~5のいずれか1項に記載の空気浄化装置において、
前記板材が、前記吸着剤を含む基板を有し、前記光触媒が前記基板の一方の面側への塗布又は溶射により前記一方の面側に付着していることを特徴とする空気浄化装置。 - 請求項1~6のいずれか1項に記載の空気浄化装置において、
前記吸着剤が疎水性を有することを特徴とする空気浄化装置。 - 請求項1~7のいずれか1項に記載の空気浄化装置において、
前記函体が傾斜して配置されることを特徴とする空気浄化装置。
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CN114992762A (zh) * | 2022-06-14 | 2022-09-02 | 哈尔滨医科大学 | 一种基于太阳能供能的紫外线空气消毒机 |
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JP6608205B2 (ja) * | 2015-07-15 | 2019-11-20 | 株式会社フジコー | 脱臭装置 |
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KR102576124B1 (ko) * | 2021-11-10 | 2023-09-08 | 한국생산기술연구원 | 광촉매가 코팅된 탄소면상 발열체 열원 공급 삽입판이 적용된 이산화탄소 전환용 광촉매 기상 반응기 시스템 |
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JP5674749B2 (ja) | 2015-02-25 |
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KR101581398B1 (ko) | 2015-12-30 |
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CN104602794A (zh) | 2015-05-06 |
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