JP2017035645A - Adsorbent, method for producing adsorbent, filter for air cleaning and air cleaning machine - Google Patents
Adsorbent, method for producing adsorbent, filter for air cleaning and air cleaning machine Download PDFInfo
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- 239000003463 adsorbent Substances 0.000 title claims abstract description 102
- 238000004140 cleaning Methods 0.000 title claims description 34
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000011148 porous material Substances 0.000 claims abstract description 120
- 238000005507 spraying Methods 0.000 claims abstract description 82
- 239000000463 material Substances 0.000 claims abstract description 58
- 239000007921 spray Substances 0.000 claims abstract description 44
- 239000008187 granular material Substances 0.000 claims description 141
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 109
- 239000002245 particle Substances 0.000 claims description 91
- 239000011941 photocatalyst Substances 0.000 claims description 67
- 239000004408 titanium dioxide Substances 0.000 claims description 50
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 32
- 229910052751 metal Inorganic materials 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 27
- 229910021536 Zeolite Inorganic materials 0.000 claims description 14
- 230000000844 anti-bacterial effect Effects 0.000 claims description 14
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 14
- 239000010457 zeolite Substances 0.000 claims description 14
- 239000004113 Sepiolite Substances 0.000 claims description 11
- 229910052624 sepiolite Inorganic materials 0.000 claims description 11
- 235000019355 sepiolite Nutrition 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 8
- 238000007751 thermal spraying Methods 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000000741 silica gel Substances 0.000 claims description 7
- 229910002027 silica gel Inorganic materials 0.000 claims description 7
- 239000000126 substance Substances 0.000 abstract description 85
- 238000001179 sorption measurement Methods 0.000 abstract description 69
- 230000001699 photocatalysis Effects 0.000 abstract description 39
- 238000000354 decomposition reaction Methods 0.000 abstract description 22
- 239000011248 coating agent Substances 0.000 abstract description 20
- 238000000576 coating method Methods 0.000 abstract description 20
- 230000001877 deodorizing effect Effects 0.000 abstract description 8
- 229920006395 saturated elastomer Polymers 0.000 abstract description 3
- 239000002250 absorbent Substances 0.000 abstract 1
- 230000002745 absorbent Effects 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 16
- 230000000694 effects Effects 0.000 description 16
- 238000000034 method Methods 0.000 description 15
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 230000007423 decrease Effects 0.000 description 9
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 8
- 229910052709 silver Inorganic materials 0.000 description 8
- 239000004332 silver Substances 0.000 description 8
- 229910021529 ammonia Inorganic materials 0.000 description 7
- 235000014113 dietary fatty acids Nutrition 0.000 description 7
- 239000000194 fatty acid Substances 0.000 description 7
- 229930195729 fatty acid Natural products 0.000 description 7
- 150000004665 fatty acids Chemical class 0.000 description 7
- 229910052759 nickel Inorganic materials 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000000057 synthetic resin Substances 0.000 description 7
- 229920003002 synthetic resin Polymers 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 230000035699 permeability Effects 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000010419 fine particle Substances 0.000 description 5
- 239000008188 pellet Substances 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 238000010285 flame spraying Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000000474 nursing effect Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 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
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 239000005751 Copper oxide Substances 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 239000005083 Zinc sulfide Substances 0.000 description 2
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 2
- 238000004887 air purification Methods 0.000 description 2
- CXKCTMHTOKXKQT-UHFFFAOYSA-N cadmium oxide Inorganic materials [Cd]=O CXKCTMHTOKXKQT-UHFFFAOYSA-N 0.000 description 2
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 2
- CFEAAQFZALKQPA-UHFFFAOYSA-N cadmium(2+);oxygen(2-) Chemical compound [O-2].[Cd+2] CFEAAQFZALKQPA-UHFFFAOYSA-N 0.000 description 2
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 2
- NNLOHLDVJGPUFR-UHFFFAOYSA-L calcium;3,4,5,6-tetrahydroxy-2-oxohexanoate Chemical compound [Ca+2].OCC(O)C(O)C(O)C(=O)C([O-])=O.OCC(O)C(O)C(O)C(=O)C([O-])=O NNLOHLDVJGPUFR-UHFFFAOYSA-L 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 229910000431 copper oxide Inorganic materials 0.000 description 2
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 239000010903 husk Substances 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910003437 indium oxide Inorganic materials 0.000 description 2
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 229910052981 lead sulfide Inorganic materials 0.000 description 2
- 229940056932 lead sulfide Drugs 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000013335 mesoporous material Substances 0.000 description 2
- 150000002736 metal compounds Chemical class 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229910052976 metal sulfide Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 2
- 229910000484 niobium oxide Inorganic materials 0.000 description 2
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 2
- 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 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910001923 silver oxide Inorganic materials 0.000 description 2
- 238000003980 solgel method Methods 0.000 description 2
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 description 2
- YPMOSINXXHVZIL-UHFFFAOYSA-N sulfanylideneantimony Chemical compound [Sb]=S YPMOSINXXHVZIL-UHFFFAOYSA-N 0.000 description 2
- GKCNVZWZCYIBPR-UHFFFAOYSA-N sulfanylideneindium Chemical compound [In]=S GKCNVZWZCYIBPR-UHFFFAOYSA-N 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 229910001887 tin oxide Inorganic materials 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 description 2
- 229910001930 tungsten oxide Inorganic materials 0.000 description 2
- 229910001935 vanadium oxide Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 229910052984 zinc sulfide Inorganic materials 0.000 description 2
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- -1 and the like Substances 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002144 chemical decomposition reaction Methods 0.000 description 1
- 238000010288 cold spraying Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004298 light response Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012229 microporous material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000013076 target substance Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Abstract
Description
本発明は、アンモニアや低級脂肪酸等の気化している化学物質を短時間で効果的に吸着、分解し脱臭可能な吸着剤とその製造方法、該吸着剤を用いることによりホテル、介護施設、病院等の各種施設におけるアンモニアや低級脂肪酸等を急速に吸着し脱臭することができる空気清浄用フィルタ及び空気清浄機に関する。 The present invention relates to an adsorbent capable of effectively adsorbing, decomposing and deodorizing vaporized chemical substances such as ammonia and lower fatty acids in a short time, a method for producing the adsorbent, a hotel, a nursing facility, and a hospital by using the adsorbent. The present invention relates to an air purifying filter and an air purifier capable of rapidly adsorbing and deodorizing ammonia, lower fatty acids, and the like in various facilities.
従来、（特許文献１）や（特許文献２）等のように、ゼオライト、シリカゲル、セピオライトなどのミクロポーラス材料乃至メソポーラス材料からなる素材に光触媒粒子をゾルゲル法でディッピングしたり、スプレーなどでコーティングしたり、或いは５ｎｍ程度の非常に細かい光触媒微粒子を混ぜた液体に素材を浸漬したりして、素材の細孔内表面に光触媒微粒子を担持させた吸着剤が知られている。
また、（特許文献３）には、ファンと集塵フィルタとを有する集塵部と、粒子状の光触媒を充填した触媒層と触媒層に短波長の光を照射するＬＥＤとを有する脱臭部と、からなる空気清浄機が開示されている。
Conventionally, as in (Patent Document 1) and (Patent Document 2), photocatalyst particles are dipped by a sol-gel method on a material made of microporous material or mesoporous material such as zeolite, silica gel, sepiolite, or coated by spraying. Alternatively, an adsorbent is known in which a material is immersed in a liquid mixed with very fine photocatalyst particles of about 5 nm so that the photocatalyst particles are supported on the inner surface of the pores of the material.
Further, (Patent Document 3) includes a dust collection unit having a fan and a dust collection filter, a deodorization unit having a catalyst layer filled with a particulate photocatalyst, and an LED that irradiates the catalyst layer with light of a short wavelength. An air purifier consisting of is disclosed.
しかしながら上記従来の技術においては、以下のような課題を有していた。
（１）（特許文献１）等のように、ゾルゲル法でディッピングしたり、スプレーなどでコーティングしたりした場合、ポーラス素材の細孔の大半が溶剤で塞がれ、ポーラス素材における化学物質の吸着能力が低下してしまうという課題を有していた。また、光触媒粒子が溶剤膜に埋没し溶剤膜表面から露出する面積が狭く、気化した化学物質の光触媒粒子による分解効果が十分に発揮できないという課題を有していた。
（２）（特許文献２）等のように、市販されている５〜１０ｎｍの光触媒粒子を混ぜた液体にメソポーラス素材を浸漬して細孔内表面に光触媒微粒子を担持させた場合、細孔内部に侵入した光触媒粒子が、ポーラス素材の細孔入口を塞いだり、細孔内面に付着したりしてポーラス素材における化学物質の吸着能力が低下するうえ、細孔内部に進入した光触媒には光が当たらず、光触媒による化学物質の分解性能が十分に発揮できないという課題を有していた。
（３）（特許文献３）では、空気清浄機の脱臭部として、粒子状の光触媒を充填した触媒層を有しており、粒子状の光触媒については、多孔質状とすることが望ましく、吸着剤粉末と光触媒粉末から構成することが望ましいことが記載されている。
しかし、詳細な説明には、「粒子状触媒は、粒径０．１μｍのアナターゼ型ＴｉＯ2粉末４重量部と、粒径０．５μｍの活性炭粉末１重量部、及び少量のバインダからなり、粒径４±１ｍｍの多孔質のものである」との記載しかなく、具体的にどのようにして多孔質状に形成しているのか不明であるが、ＴｉＯ2粉末がバインダに埋没したり、活性炭の細孔内部に侵入したりして、粒子状触媒表面での露出面積が不足し、光触媒粒子による化学物質の分解効率低下や性能低下が発生することや、活性炭の細孔内部に侵入したＴｉＯ2粉末やバインダ粉末が細孔の入口を塞いだり、細孔内面に付着したりして、活性炭における化学物質の吸着能力の低下が発生することが考えられ、化学物質の吸着、分解性能の効率性、安定性に欠けるという課題を有していた。
However, the above conventional techniques have the following problems.
(1) When dipped by the sol-gel method or coated with a spray as in (Patent Document 1) etc., most of the pores of the porous material are blocked with a solvent, and the adsorption of chemical substances in the porous material It had the subject that ability fell. Further, the photocatalyst particles are buried in the solvent film and the area exposed from the surface of the solvent film is narrow, and there is a problem that the decomposition effect of the vaporized chemical substance by the photocatalyst particles cannot be sufficiently exhibited.
(2) When the mesoporous material is immersed in a liquid in which commercially available 5-10 nm photocatalyst particles are mixed and the photocatalyst fine particles are supported on the pore inner surface as in (Patent Document 2) The photocatalyst particles that have entered the pores block the pore inlet of the porous material or adhere to the inner surface of the pores, reducing the adsorption ability of chemical substances on the porous material, and light entering the photocatalyst entering the pores. It did not hit and had the subject that the decomposition | disassembly performance of the chemical substance by a photocatalyst cannot fully be exhibited.
(3) (Patent Document 3) has a catalyst layer filled with a particulate photocatalyst as a deodorizing part of an air cleaner, and the particulate photocatalyst is desirably made porous. It is described that it is desirable to comprise the agent powder and the photocatalyst powder.
However, for the detailed explanation, “The particulate catalyst is composed of 4 parts by weight of anatase TiO 2 powder having a particle size of 0.1 μm, 1 part by weight of activated carbon powder having a particle size of 0.5 μm, and a small amount of binder. It is only described as “a porous material having a diameter of 4 ± 1 mm”, and it is unclear how it is specifically formed into a porous shape, but TiO 2 powder is buried in a binder or activated carbon. TiO that penetrated into the pores of activated carbon, and the exposed area on the surface of the particulate catalyst was insufficient, resulting in degradation of chemical decomposition efficiency and performance due to photocatalyst particles. (2) It is possible that the adsorption capacity of the chemical substance on the activated carbon may decrease due to the powder or binder powder blocking the pore entrance or adhering to the inner surface of the pore. The problem of lack of stability and stability It was.
本発明は上記従来の課題を解決するもので、気化した化学物質等を光触媒機能で分解して脱臭すると共に、分解能力を超えた化学物質等は細孔に吸着して脱臭することができ、細孔における化学物質等の吸着能力が飽和した際には、太陽光などに晒すことにより、細孔内の化学物質を光触媒機能で分解して吸着能力を回復させ、化学物質等の吸着能力を維持し続けることができ、化学物質等の吸着、分解の効率性、確実性、安定性に優れる分解性能の高い吸着剤の提供、ミクロポア乃至メソポアの細孔を有するポーラス材料で形成された粒状素材の細孔入口を実質的に塞ぐことなく素材表面を光触媒粒子で覆うことができ、粒状素材が有する本来の高い吸着能力と合わせて長期間にわたって吸着性能を維持することができる吸着剤の製造方法の提供、該吸着剤を用いることにより、ホテル、介護施設、病院等の各種施設におけるアンモニア臭や低級脂肪酸臭等を急速吸着・脱臭することができ、速効性、信頼性に優れる高機能な空気清浄用フィルタ及び空気清浄機の提供を目的とする。 The present invention solves the above-mentioned conventional problems, and decomposes and deodorizes the vaporized chemical substance etc. with a photocatalytic function, and the chemical substance etc. exceeding the decomposition ability can be adsorbed to the pores and deodorized, When the adsorption capacity of chemical substances, etc. in the pores is saturated, exposure to sunlight, etc., decomposes the chemical substances in the pores with the photocatalytic function to restore the adsorption capacity, thereby improving the adsorption capacity of chemical substances, etc. Adsorption of chemical substances, etc. that can be maintained, provision of adsorbents with high decomposition performance that is excellent in decomposition efficiency, certainty, and stability, granular materials formed of porous materials having micropores or mesopore pores Method of adsorbent that can cover the surface of the material with photocatalyst particles without substantially blocking the pore inlet of the material, and can maintain the adsorption performance for a long period of time together with the original high adsorption ability of the granular material By providing the adsorbent, it is possible to quickly adsorb and deodorize ammonia odor, lower fatty acid odor, etc. in various facilities such as hotels, nursing homes, hospitals, etc. The purpose is to provide filters and air cleaners.
上記従来の課題を解決するために、本発明の吸着剤、吸着剤の製造方法と空気清浄用フィルタ及び空気清浄機は、以下の構成を有している。
本発明の請求項１に記載の吸着剤は、ミクロポア乃至メソポアの細孔を有するポーラス材料で形成された粒状素材と、光触媒粒子を含む溶射材料を前記粒状素材の外表面に溶射して形成された溶射皮膜と、を備え、前記粒状素材の外表面に溶射付着した前記光触媒粒子と前記粒状素材の外表面との間、及び重なって溶射付着した前記光触媒粒子間には前記細孔より大きな隙間が形成された構成を有している。
この構成により、以下のような作用、効果が得られる。
（１）ミクロポア乃至メソポアの細孔を有するポーラス材料で形成された粒状素材と、光触媒粒子を含む溶射材料を粒状素材の外表面に溶射して形成された溶射皮膜を備えることにより、バインダ等を用いずに、粒状素材の外表面に直接溶射された光触媒粒子で粒状素材の表面全体を被覆できると共に、粒状素材の外表面に溶射付着した光触媒粒子と粒状素材の外表面との間、及び重なって溶射付着した光触媒粒子間には細孔より大きな隙間が形成されているため、溶射皮膜の光触媒機能で分解しきれない化学物質や湿気がこれらの隙間を通って粒状素材の細孔に進入し吸着されるので、ミクロポア乃至メソポアの細孔を有するポーラス材料で形成された粒状素材が有する高い吸着能力と合わせて長期間にわたって吸着性能を維持することができ、化学物質等の吸着の確実性、安定性に優れる。
（２）粒状素材の外表面に光触媒粒子が溶射されて溶射皮膜が形成されているので、太陽光、紫外線ランプ、蛍光灯などに晒すことにより、粒状素材の外表面において溶射皮膜の光触媒機能で化学物質等を分解することができると共に、粒状素材の細孔内に捕捉された溶射皮膜（粒状素材の外表面）近傍の化学物質等も分解して、細孔内の化学物質等を徐々に粒状素材の外表面側に移動させて分解することができ、粒状素材の吸着能力を回復させ、初期の吸着能力を維持し続けることができ、化学物質等の吸着、分解の効率性、確実性、安定性に優れる。
In order to solve the above conventional problems, an adsorbent, an adsorbent manufacturing method, an air cleaning filter, and an air purifier according to the present invention have the following configurations.
The adsorbent according to claim 1 of the present invention is formed by spraying a granular material formed of a porous material having micropores or mesopores pores and a thermal spray material containing photocatalyst particles on the outer surface of the granular material. A gap larger than the pores between the photocatalyst particles sprayed on the outer surface of the granular material and the outer surface of the granular material, and between the photocatalyst particles deposited by thermal spraying. Is formed.
With this configuration, the following operations and effects can be obtained.
(1) By providing a granular material formed of a porous material having micropore or mesopore pores, and a thermal spray coating formed by spraying a thermal spray material containing photocatalyst particles on the outer surface of the granular material, a binder or the like is provided. Without being used, the entire surface of the granular material can be covered with the photocatalyst particles sprayed directly on the outer surface of the granular material, and the photocatalyst particles adhered to the outer surface of the granular material and the outer surface of the granular material overlap with each other. Since there are gaps larger than the pores between the photocatalyst particles sprayed and adhered, chemical substances and moisture that cannot be decomposed by the photocatalytic function of the thermal spray coating enter the pores of the granular material through these gaps. Because it is adsorbed, the adsorption performance can be maintained over a long period of time together with the high adsorption capacity of the granular material formed of a porous material having micropores or mesopores. Can, certainty of adsorption of such chemicals, excellent stability.
(2) Since the photocatalyst particles are sprayed on the outer surface of the granular material to form a sprayed coating, the photocatalytic function of the sprayed coating on the outer surface of the granular material can be achieved by exposure to sunlight, ultraviolet lamps, fluorescent lamps, etc. It can decompose chemical substances, etc., and also decomposes chemical substances in the vicinity of the thermal spray coating (outer surface of the granular material) trapped in the pores of the granular material, gradually reducing the chemical substances in the pores. It can be moved to the outer surface side of the granular material and decomposed, the adsorption capacity of the granular material can be recovered and the initial adsorption capacity can be maintained, the adsorption of chemical substances, the efficiency of decomposition, the certainty Excellent stability.
ここで、粒状素材を形成するミクロポア乃至メソポアの細孔を有するポーラス材料としては、セピオライトやゼオライト等の鉱物系多孔質物質や活性炭、シリカゲル等が好適に用いられる。これらは単独で用いてもよいし、複数混合して用いてもよい。活性炭の種類は適宜、選択することができるが、もみ殻を原料とするもみ殻活性炭は、ミクロポアとマクロポアが多いヤシ殻活性炭に比べメソポアが多く、吸着性に優れるので好ましい。
粒状素材の寸法形状としては、直径が２ｍｍ〜４ｍｍ、長さが５ｍｍ〜１０ｍｍ程度のペレット状に形成されたものが好適に用いられる。
粒状素材の直径が２ｍｍより小さくなるか、長さが５ｍｍより短くなるにつれ、粒状素材への溶射加工が困難になる傾向があり、直径が４ｍｍより大きくなるか、長さが１０ｍｍより長くなるにつれ、通気性がよくなる反面、吸着性が低下し易くなる傾向があり、いずれも好ましくない。
吸着剤は、通気性を有する紙製や布製の袋、合成繊維製のネット（網状袋体）、合成樹脂製若しくは金属製の容器等で形成された吸着剤保持体に充填する等して使用することができる。
尚、吸着剤の充填率は、吸着剤の用途や吸着剤保持体の形態等に応じて、適宜、選択することができる。
Here, mineral porous materials such as sepiolite and zeolite, activated carbon, silica gel and the like are suitably used as the porous material having micropores or mesopores pores forming the granular material. These may be used alone or in combination. The type of activated carbon can be selected as appropriate, but rice husk activated carbon using rice husk as a raw material is preferable because it has more mesopores and superior adsorbability compared to coconut shell activated carbon with many micropores and macropores.
As the dimensional shape of the granular material, those formed into pellets having a diameter of 2 mm to 4 mm and a length of about 5 mm to 10 mm are preferably used.
As the diameter of the granular material becomes smaller than 2 mm or the length becomes shorter than 5 mm, the thermal spraying process on the granular material tends to become difficult, and as the diameter becomes larger than 4 mm or the length becomes longer than 10 mm. On the other hand, the air permeability is improved, but the adsorptivity tends to be lowered, which is not preferable.
The adsorbent is used by filling an adsorbent holder formed of a paper or cloth bag with air permeability, a synthetic fiber net (net-like bag), a synthetic resin or metal container, etc. can do.
The filling rate of the adsorbent can be appropriately selected according to the use of the adsorbent, the form of the adsorbent holder, and the like.
光触媒粒子としては、二酸化チタンや酸化亜鉛，酸化タングステン，酸化カドミウム，酸化インジウム，酸化銀，酸化マンガン，酸化銅，酸化鉄，酸化スズ，酸化バナジウム，酸化ニオブ，酸化ジルコニウム等の金属酸化物半導体、硫化カドミウム，硫化亜鉛，硫化インジウム，硫化鉛，硫化銅，硫化モリブデン，硫化タングステン，硫化アンチモン，硫化ビスマス等の金属硫化物半導体、チタン酸ストロンチウム、セレン化カドミウム、タンタル酸カリウム及びこれらの混合物を使用することができる。中でも、二酸化チタンは安価であり、化学的安定性に優れ、かつ高い触媒活性を有しているので好ましい。
二酸化チタンには、結晶構造の違いによりアナターゼ（Ａｎａｔａｓｅ）型やルチル（Ｒｕｔｉｌｅ）型等が存在するが、結晶構造は特に限定されず、一方のみを用いてもよいし、これらの混合物を用いてもよい。尚、光触媒機能を重視する場合にはアナターゼ型の二酸化チタンを使用することが好ましく、コスト面を重視する場合にはルチル型の二酸化チタンを使用することが好ましい。
また、二酸化チタンの結晶格子中に、硫黄，炭素，窒素等をドープしたり、溶射皮膜に増感剤である鉄，銅，クロム、ニッケル等の金属錯体又は金属塩から選ばれる少なくとも１以上の化合物を混合又は担持させたりすることにより可視光応答型の溶射皮膜としてもよい。
Photocatalyst particles include metal oxide semiconductors such as titanium dioxide, zinc oxide, tungsten oxide, cadmium oxide, indium oxide, silver oxide, manganese oxide, copper oxide, iron oxide, tin oxide, vanadium oxide, niobium oxide, zirconium oxide, Use metal sulfide semiconductors such as cadmium sulfide, zinc sulfide, indium sulfide, lead sulfide, copper sulfide, molybdenum sulfide, tungsten sulfide, antimony sulfide, bismuth sulfide, strontium titanate, cadmium selenide, potassium tantalate and mixtures thereof can do. Among these, titanium dioxide is preferable because it is inexpensive, has excellent chemical stability, and has high catalytic activity.
Titanium dioxide has an anatase type, a rutile type, etc. depending on the crystal structure, but the crystal structure is not particularly limited, and only one of them may be used, or a mixture thereof may be used. Also good. In addition, it is preferable to use anatase type titanium dioxide when importance is attached to the photocatalytic function, and it is preferable to use rutile type titanium dioxide when importance is attached to the cost.
In addition, at least one or more selected from metal complexes or metal salts such as iron, copper, chromium, nickel, etc., which are doped with sulfur, carbon, nitrogen, etc., or sensitizers on the thermal spray coating, in the crystal lattice of titanium dioxide It is good also as a visible light response type thermal spray coating by mixing or carrying a compound.
溶射皮膜を形成する方法としては、溶射であれば特に限定されず、フレーム溶射，高速フレーム溶射，ガス式溶射、アーク溶射，プラズマ溶射，線爆溶射等の電気式溶射、コールドスプレー法等の方法を用いることができる。中でも、高速フレーム溶射は、溶射材料が半溶融状態で溶射されて熱の影響を受け難く、また、音速の数倍の速度で吹き付けるので、溶射材料が粒状素材に食い込んでアンカー効果が得られ易いため、密着性の高い溶射皮膜を形成することでき好ましい。溶射皮膜を形成する方法は、例えば、ステンレス網を加工した有底筒状容器に多数の粒状素材を収納し、該筒状容器を回転させながら側周面方向から溶射材料を溶射することで、効率よく一度に多数の粒状素材表面に溶射皮膜を形成することができる。
尚、ミクロポアの径は２ｎｍ以下、メソポアの径は２ｎｍ〜５０ｎｍであるが、粒状素材の外表面に形成される溶射皮膜には、ミクロポア乃至メソポアの細孔より大きな隙間があり、化学物質等がこの隙間を通って粒状素材の細孔に進入し確実に吸着される。
よって、溶射皮膜の光触媒機能による分解能力を超える量の化学物質等が存在している場合や、夜間等で溶射皮膜の光触媒機能が発揮されない場合等は、粒状素材が有する高い吸着能力で化学物質等を確実に吸着することができ、化学物質等の吸着、分解の安定性、持続性に優れる。
The method for forming the thermal spray coating is not particularly limited as long as it is thermal spraying. Flame spraying, high-speed flame spraying, gas spraying, arc spraying, plasma spraying, wire spraying, and other electric spraying methods, cold spraying methods, etc. Can be used. Above all, high-speed flame spraying is sprayed in a semi-molten state and is not easily affected by heat, and sprayed at a speed several times the speed of sound, the sprayed material penetrates into the granular material, and an anchor effect is easily obtained. Therefore, it is preferable because a thermal spray coating having high adhesion can be formed. The method for forming the sprayed coating is, for example, by storing a large number of granular materials in a bottomed cylindrical container processed stainless steel, and spraying the sprayed material from the side surface direction while rotating the cylindrical container, A sprayed coating can be efficiently formed on the surface of many granular materials at once.
The diameter of the micropore is 2 nm or less, and the diameter of the mesopore is 2 nm to 50 nm. However, the sprayed coating formed on the outer surface of the granular material has a gap larger than the pores of the micropore or the mesopore, and chemical substances, etc. It enters the pores of the granular material through this gap and is reliably adsorbed.
Therefore, if there is a chemical substance in an amount that exceeds the decomposition capability of the thermal spray coating due to the photocatalytic function, or if the photocatalytic function of the thermal spray coating is not demonstrated at night, etc., the chemical material will have a high adsorption capacity that the granular material has. Can be adsorbed reliably, and is excellent in the adsorption and decomposition stability of chemical substances.
請求項２に記載の発明は、請求項１に記載の吸着剤であって、前記粒状素材の主成分が、ゼオライト、セピオライト、活性炭、シリカゲルの何れか一種又は二種以上の混合物である構成を有している。
この構成により、請求項１の作用、効果に加え、以下のような作用、効果が得られる。
（１）粒状素材の主成分が、ゼオライト、セピオライト、活性炭、シリカゲルの何れか一種又は二種以上の混合物であることにより、化学物質と共に吸着される水分によってボロボロになるようなことが無く耐久性があり、太陽光に晒したり、電子レンジ等を用いて加熱したりして乾燥することで、臭い吸着性能や除湿性能が回復して繰り返し使用することができ、耐久性、長寿命性、省資源性に優れる。
（２）親水性のゼオライト又はセピオライトと、疎水性の活性炭を組合せた場合、周囲の湿度の影響を受け難く、高湿度でも吸着性能を維持することができ、性能安定性、汎用性に優れる。
Invention of Claim 2 is the adsorption agent of Claim 1, Comprising: The structure in which the main component of the said granular material is any one of zeolite, sepiolite, activated carbon, and silica gel, or a mixture of 2 or more types. Have.
With this configuration, the following operations and effects can be obtained in addition to the operations and effects of the first aspect.
(1) The main component of the granular material is any one of zeolite, sepiolite, activated carbon, and silica gel, or a mixture of two or more. It can be used repeatedly after being exposed to sunlight or heated using a microwave oven, etc. to recover odor adsorption performance and dehumidification performance. Excellent resource.
(2) When hydrophilic zeolite or sepiolite is combined with hydrophobic activated carbon, it is hardly affected by ambient humidity, can maintain adsorption performance even at high humidity, and has excellent performance stability and versatility.
ここで、ゼオライト、セピオライト、活性炭の混合割合は適宜、選択することができる。
尚、混合物としては、粉末状のゼオライト、セピオライト、活性炭の二種以上の材料を混合しスラリー状にした素材を造粒機で成形したものが好適に用いられる。
Here, the mixing ratio of zeolite, sepiolite, and activated carbon can be selected as appropriate.
In addition, as a mixture, what shape | molded the raw material which mixed the powdery zeolite, sepiolite, and 2 or more types of materials, and was made into the slurry form with the granulator is used suitably.
請求項３に記載の発明は、請求項１又は２に記載の吸着剤であって、前記溶射材料の主成分が、粒径が１０μｍ〜１００μｍの二酸化チタンである構成を有している。
この構成により、請求項１又は２の作用、効果に加え、以下のような作用、効果が得られる。
（１）溶射材料の主成分が、粒径が１０μｍ〜１００μｍの二酸化チタンであることにより、ミクロポア乃至メソポアの細孔を有するポーラス材料で形成された粒状素材における直径５０ｎｍ未満の細孔が溶射後の二酸化チタン粒子で塞がれることがなく、ミクロポア乃至メソポアの細孔よりも大きな隙間を有するので、二酸化チタンによって分解されなかた化学物質等も粒状素材の細孔に確実に進入させて吸着させることができると共に、粒状素材の表面の細孔内に捕捉された化学物質や細孔から放出された化学物質等を二酸化チタンで効率的に分解して高い吸着能力を維持し続けることができ、化学物質等の吸着、分解の効率性、確実性、安定性に優れる。
Invention of Claim 3 is an adsorption agent of Claim 1 or 2, Comprising: The main component of the said thermal spray material has the structure which is a titanium dioxide with a particle size of 10 micrometers-100 micrometers.
With this configuration, the following actions and effects can be obtained in addition to the actions and effects of the first or second aspect.
(1) Since the main component of the thermal spray material is titanium dioxide having a particle size of 10 μm to 100 μm, pores having a diameter of less than 50 nm in the granular material formed of a porous material having micropores to mesopores are sprayed. Since it is not clogged with titanium dioxide particles and has gaps larger than micropore or mesopore pores, chemical substances that have not been decomposed by titanium dioxide can surely enter and adsorb into the pores of the granular material. In addition, it is possible to efficiently decompose the chemical substances trapped in the pores on the surface of the granular material and the chemical substances released from the pores with titanium dioxide to maintain a high adsorption capacity. Excellent adsorption, decomposition efficiency, certainty, and stability of substances.
ここで、溶射材料の主成分である二酸化チタンは、粒径が１０ｎｍ〜１０００ｎｍの二酸化チタンの粒子又はその集合体を１０μｍ〜１００μｍの粒径まで粗大化（造粒）したものが好適に用いられる。粗大化（造粒）した二酸化チタンの粒径が１０μｍより小さくなるにつれ、溶射後の各々の二酸化チタンの粒径が微細化し、粒状素材の細孔が二酸化チタンで覆われ易くなり、粒状素材の表面に溶射付着した二酸化チタンと粒状素材の表面との間や、重なって溶射付着した二酸化チタンの微粒子間に形成される隙間が減少して、化学物質が粒状素材の細孔に入り込み難くなって吸着性能が低下し易くなる傾向があり、１００μｍより大きくなるにつれ、溶射被膜の表面比率が高くなり、粒状素材の吸着能力が抑制され易くなる傾向があり、いずれも好ましくない。
二酸化チタンの粒子を粗大化（造粒）する方法は適宜、選択することができるが、水及び／又はアルコールやアセトン等の有機系溶液に二酸化チタンの粒子を混合してスラリー化する方法が好適に用いられる。尚、生成したスラリーに超音波を照射したり、バインダーとして合成樹脂、ガラス或いはアルミニウム、亜鉛、すず、ニッケル等を含む低融点金属等の粉末を加えたりしてもよい。
Here, as the titanium dioxide which is the main component of the thermal spray material, titanium dioxide particles having a particle diameter of 10 nm to 1000 nm or aggregates thereof are coarsened (granulated) to a particle diameter of 10 μm to 100 μm. . As the particle size of the coarsened (granulated) titanium dioxide becomes smaller than 10 μm, the particle size of each titanium dioxide after spraying becomes finer, and the pores of the granular material are easily covered with titanium dioxide. The gaps formed between the surface of the titanium dioxide sprayed on the surface and the surface of the granular material and between the fine particles of the titanium dioxide deposited by thermal spraying are reduced, making it difficult for chemicals to enter the pores of the granular material. There is a tendency that the adsorption performance tends to be lowered, and as it becomes larger than 100 μm, the surface ratio of the sprayed coating tends to increase, and the adsorption ability of the granular material tends to be suppressed, both of which are not preferable.
A method of coarsening (granulating) the titanium dioxide particles can be selected as appropriate, but a method of mixing the titanium dioxide particles with water and / or an organic solution such as alcohol or acetone to make a slurry is preferable. Used for. In addition, you may irradiate the produced | generated slurry to an ultrasonic wave, or you may add powders, such as a synthetic resin, glass, or low melting metal containing aluminum, zinc, tin, nickel, etc. as a binder.
請求項４に記載の発明は、請求項１乃至３の内いずれか１項に記載の吸着剤であって、前記溶射材料に含まれる前記光触媒粒子に抗菌性金属が担持された構成を有している。
この構成により、請求項１乃至３の内いずれか１項の作用、効果に加え、以下のような作用、効果が得られる。
（１）溶射材料に含まれる光触媒粒子に抗菌性金属が担持されているので、吸着剤を押入れ、冷蔵庫、下駄箱、靴内部などの脱臭剤として用いた場合に、吸着剤表面に黴や雑菌等が発生せず、脱臭効果を維持することができ、脱臭性能の安定性、長寿命性に優れる。
Invention of Claim 4 is the adsorption agent of any one of Claims 1 thru | or 3, Comprising: It has the structure by which the antimicrobial metal was carry | supported by the said photocatalyst particle contained in the said thermal spray material. ing.
With this configuration, in addition to the function and effect of any one of claims 1 to 3, the following function and effect can be obtained.
(1) Since antibacterial metal is supported on the photocatalyst particles contained in the thermal spray material, when the adsorbent is pushed in and used as a deodorizer for refrigerators, shoe boxes, shoe interiors, etc. The deodorizing effect can be maintained, and the stability of the deodorizing performance and the long life are excellent.
ここで、抗菌性金属としては、銀，銅，亜鉛，ニッケル，コバルト，アルミニウム，鉄やこれらの化合物等を使用することができる。これら抗菌性金属を加えて、抗菌性を高める場合、溶射皮膜の総量に対し、０．１質量％〜１０質量％含めることが好ましい。
溶射皮膜中の抗菌性金属の量が０．１質量％より少なくなるにつれ、抗菌性の向上が見られなくなる傾向があり、１０質量％より多くなるにつれ、光触媒粒子の量が減り、光触媒機能が低下すると共に、粒状素材の表面の細孔内に捕捉された化学物質や細孔から放出された化学物質が単位時間当りに溶射皮膜中の光触媒粒子に接触できる量が低下し、光触媒機能による分解性能が低下し易くなる傾向があり、いずれも好ましくない。
Here, as the antibacterial metal, silver, copper, zinc, nickel, cobalt, aluminum, iron, or a compound thereof can be used. When adding these antibacterial metals and improving antibacterial property, it is preferable to include 0.1 mass%-10 mass% with respect to the total amount of a sprayed coating.
As the amount of the antibacterial metal in the thermal spray coating is less than 0.1% by mass, the antibacterial improvement tends to be lost, and as the amount exceeds 10% by mass, the amount of the photocatalyst particles decreases and the photocatalytic function is improved. At the same time, the amount of chemical substances trapped in the pores on the surface of the granular material and the chemical substances released from the pores can contact the photocatalyst particles in the thermal spray coating per unit time is reduced, and decomposition by the photocatalytic function There is a tendency that the performance tends to be lowered, both of which are not preferable.
本発明の請求項５に記載の発明は、請求項１乃至４の内いずれか１項に記載の吸着剤の製造方法であって、ミクロポア乃至メソポアの細孔を有するポーラス材料で形成された粒状素材の外表面に光触媒粒子を含む溶射材料を溶射し前記粒状素材の外表面に溶射付着した前記光触媒粒子と前記粒状素材の外表面との間、及び重なって溶射付着する前記光触媒粒子間には前記細孔より大きな隙間を有する溶射皮膜を形成する溶射皮膜形成工程を備えた構成を有している。
この構成により、以下のような作用、効果が得られる。
（１）ミクロポア乃至メソポアの細孔を有するポーラス材料で形成された粒状素材の外表面に光触媒粒子を含む溶射材料を溶射し粒状素材の外表面に溶射付着した光触媒粒子と粒状素材の外表面との間、及び重なって溶射付着する光触媒粒子間には細孔より大きな隙間を有する溶射皮膜を形成する溶射皮膜形成工程を有することにより、ミクロポア乃至メソポアの細孔を有するポーラス材料で形成された粒状素材の細孔入口を実質的に塞ぐことなく素材表面を光触媒粒子で覆うことができ、ミクロポア乃至メソポアの細孔を有するポーラス材料が有する本来の高い吸着能力を維持しつつ、光触媒機能を付与することができ、量産性、品質の安定性に優れる。
（２）溶射皮膜形成工程で粒状素材の外表面に溶射材料を溶射して溶射皮膜を形成することにより、溶射材料の一部分が粒状素材に食い込み易く、密着性の高い溶射皮膜が得られ、溶射材料に含まれる金属化合物の光触媒機能を長期間にわたって発揮することができ、長寿命性、高品質性に優れる。
Invention of Claim 5 of this invention is a manufacturing method of the adsorption agent of any one of Claim 1 thru | or 4, Comprising: The granular material formed with the porous material which has the pore of a micropore or a mesopore A thermal spray material containing photocatalyst particles is sprayed on the outer surface of the material and sprayed and adhered to the outer surface of the granular material. It has the structure provided with the thermal spray coating formation process which forms the thermal spray coating which has a clearance gap larger than the said pore.
With this configuration, the following operations and effects can be obtained.
(1) Photocatalyst particles sprayed on the outer surface of the granular material by spraying a thermal spray material containing photocatalyst particles on the outer surface of the granular material formed of a porous material having micropores or mesopores, and the outer surface of the granular material Between the photocatalyst particles that overlap and spray adhere to each other, and by forming a thermal spray coating process having a gap larger than the pores, a granular material formed of a porous material having micropores or mesopore pores The surface of the material can be covered with photocatalyst particles without substantially blocking the pore inlet of the material, and the photocatalytic function is imparted while maintaining the original high adsorption ability possessed by the porous material having micropores or mesopores. Can be mass-produced and has excellent quality stability.
(2) A thermal spray coating is formed by spraying a thermal spray material on the outer surface of the granular material in the thermal spray coating formation process, so that a part of the thermal spray material can easily bite into the granular material and a thermal spray coating with high adhesion is obtained. The photocatalytic function of the metal compound contained in the material can be exhibited over a long period of time, and it has excellent long life and high quality.
ここで、溶射皮膜を形成する際の溶射フレームの温度は７００℃〜２，０００℃が好ましい。溶射フレームの温度が７００℃より低くなるにつれ、溶射する光触媒粒子への入熱が不足し易く、粒状素材の表面に安定した溶射皮膜が形成され難くなる傾向があり、２０００℃より高くなるにつれ、溶射する光触媒粒子に過剰に入熱され易くなり、特に光触媒粒子として二酸化チタンを使用する場合にはアナターゼ型からルチル型へと変態する量が増加して、光触媒機能が低下し易くなる傾向があり、いずれも好ましくない。溶射皮膜を形成する際の溶射フレームの温度が７００℃〜２，０００℃であることにより、粒状素材の表面を光触媒粒子で安定的に被覆して、光触媒機能を十分に発揮することができ、溶射皮膜の均質性、光触媒機能の安定性に優れる。
また、溶射皮膜を形成する際の溶射材料の噴出速度は８００ｍ/秒〜２，０００ｍ/秒が好ましい。溶射材料の噴出速度が８００ｍ/秒より遅くなるにつれ、溶射材料が熱の影響を受け易く、また、溶射材料が粒状素材に食い込み難くなって密着性が低下し易くなる傾向があり、２，０００ｍ/秒より速くなるにつれ、粒状素材が破壊され易くなる傾向があり、いずれも好ましくない。溶射皮膜を形成する際の溶射材料の噴出速度が８００ｍ/秒〜２，０００ｍ/秒であることにより、溶射材料が半溶融状態で溶射されて熱の影響を受け難く、また、音速の数倍の速度で吹き付けることにより、溶射材料が粒状素材に食い込んでアンカー効果が得られ易く、密着性の高い溶射皮膜を形成することでき、溶射皮膜の安定性、耐久性に優れる。
Here, the temperature of the thermal spray frame when forming the thermal spray coating is preferably 700 ° C. to 2,000 ° C. As the temperature of the thermal spray frame becomes lower than 700 ° C, heat input to the photocatalyst particles to be sprayed tends to be insufficient, and a stable thermal spray coating tends to be hardly formed on the surface of the granular material, and as the temperature becomes higher than 2000 ° C, It tends to be excessively heat input to the photocatalyst particles to be sprayed, especially when titanium dioxide is used as the photocatalyst particles, the amount of transformation from anatase type to rutile type increases and the photocatalytic function tends to be lowered. Neither is preferred. When the temperature of the thermal spray frame when forming the thermal spray coating is 700 ° C. to 2,000 ° C., the surface of the granular material can be stably covered with the photocatalyst particles, and the photocatalytic function can be sufficiently exerted, Excellent thermal spray coating uniformity and photocatalytic function stability.
Further, the spraying speed of the thermal spray material when forming the thermal spray coating is preferably 800 m / second to 2,000 m / second. As the spraying speed of the thermal spray material becomes lower than 800 m / sec, the thermal spray material is easily affected by heat, and the thermal spray material is less likely to bite into the granular material, and the adhesion tends to be lowered, and 2,000 m As it becomes faster than / sec, the granular material tends to be easily broken, which is not preferable. Since the spraying speed of the sprayed material when forming the sprayed coating is 800 m / sec to 2,000 m / sec, the sprayed material is sprayed in a semi-molten state and hardly affected by heat, and is several times the speed of sound. By spraying at a speed of, the sprayed material can easily bite into the granular material and an anchor effect can be easily obtained, and a sprayed coating with high adhesion can be formed, and the stability and durability of the sprayed coating are excellent.
請求項６に記載の発明は、空気清浄用フィルタであって、複数の開口部を有する吸着剤保持体の中に請求項１乃至４の内いずれか１項に記載の吸着剤が充填された構成を有している。
この構成により、以下のような作用、効果が得られる。
（１）複数の開口部を有する吸着剤保持体の中に吸着剤が充填されているので、空気清浄用フィルタを通過する空気中に含まれる化学物質等を効率的に吸着、分解することができ、機能性、空気清浄の効率性、確実性に優れる。
（２）吸着剤保持体の中に充填される吸着剤の粒状素材の外表面に光触媒粒子が溶射されて溶射皮膜が形成されているので、太陽光、紫外線ランプ、蛍光灯などに晒すことにより、粒状素材の外表面において溶射皮膜の光触媒機能で化学物質等を分解することができると共に、粒状素材の細孔内に捕捉された溶射皮膜（粒状素材の外表面）近傍の化学物質等も分解して、細孔内の化学物質等を徐々に粒状素材の外表面側に移動させて分解することができ、粒状素材の吸着能力を回復させ、初期の吸着能力を維持し続けることができ、長寿命性、空気清浄機能の安定性に優れる。
The invention according to claim 6 is an air cleaning filter, wherein the adsorbent according to any one of claims 1 to 4 is filled in an adsorbent holder having a plurality of openings. It has a configuration.
With this configuration, the following operations and effects can be obtained.
(1) Since the adsorbent holding body having a plurality of openings is filled with the adsorbent, it is possible to efficiently adsorb and decompose chemical substances contained in the air passing through the air cleaning filter. It has excellent functionality, air cleaning efficiency and certainty.
(2) Since the photocatalyst particles are sprayed on the outer surface of the adsorbent granular material filled in the adsorbent holder, and a sprayed coating is formed, it can be exposed to sunlight, ultraviolet lamps, fluorescent lamps, etc. In addition, chemical substances can be decomposed by the photocatalytic function of the thermal spray coating on the outer surface of the granular material, and chemical substances etc. near the thermal spray coating (outer surface of the granular material) trapped in the pores of the granular material are also decomposed. Then, the chemical substances in the pores can be gradually moved to the outer surface side of the granular material and decomposed, the adsorption capacity of the granular material can be recovered, and the initial adsorption capacity can be maintained, Excellent long life and stability of air cleaning function.
ここで、吸着剤保持体は金属製でも合成樹脂製でもよい。吸着剤保持体を金属で形成する場合、空気清浄用フィルタの表裏を金網等の網体で覆うことにより、内部に吸着材を充填して封入することができる。また、吸着剤保持体として合成樹脂製の網状袋体等に吸着材を充填する場合、金属製の金網やエキスパンドメタル等で表裏を覆うことにより、吸着剤保持体を補強して形状を保つことができ、空気清浄用フィルタの保形性、取扱い性に優れる。
尚、吸着剤保持体が金属製の場合、材質は特に限定されず、鉄、銅、銀、金、アルミニウム、ニッケル、ステンレス、タングステン、モリブデン等を用いることができる。
吸着剤保持体の開孔率は５０％〜９０％のものが好適に用いられる。吸着剤保持体の開孔率が５０％より小さくなるにつれ、吸着剤の露出が小さくなり、単位時間当たりに吸着剤の細孔に進入できる空気の量が少なくなって、化学物質等の吸着量が低下し易くなる傾向があり、９０％より大きくなるにつれ、吸着剤保持体の構造強度が弱くなり、外力等による破損等が発生し易くなる傾向があり、いずれも好ましくない。
吸着剤保持体の１つの開口部の大きさは、吸着剤が脱落せず、通気性と、吸着剤に太陽光等を照射して光触媒機能により吸着能力を回復させるための透光性を有していればよい。
Here, the adsorbent holder may be made of metal or synthetic resin. When the adsorbent holder is made of metal, the inside and outside of the air cleaning filter can be filled with an adsorbent by enclosing the front and back of the air cleaning filter with a net such as a wire mesh. In addition, when filling an adsorbent into a mesh bag made of synthetic resin as an adsorbent holder, the shape of the adsorbent holder is reinforced by covering the front and back with a metal wire net or expanded metal. The air purifying filter has excellent shape retention and handling.
When the adsorbent holder is made of metal, the material is not particularly limited, and iron, copper, silver, gold, aluminum, nickel, stainless steel, tungsten, molybdenum, or the like can be used.
An adsorbent holder having a hole area ratio of 50% to 90% is preferably used. As the opening rate of the adsorbent holder becomes smaller than 50%, the exposure of the adsorbent becomes smaller, the amount of air that can enter the pores of the adsorbent per unit time decreases, and the adsorption amount of chemical substances, etc. Tends to be reduced, and as it exceeds 90%, the structural strength of the adsorbent holder tends to be weakened, and damage due to external force or the like tends to occur.
The size of one opening of the adsorbent holder has air permeability that prevents the adsorbent from falling off, and translucency for irradiating the adsorbent with sunlight or the like to restore the adsorption capacity by the photocatalytic function. If you do.
本発明の請求項７に記載の空気清浄機は、請求項６に記載の空気清浄用フィルタを備えた構成を有している。
この構成により、以下のような作用、効果が得られる。
（１）吸着剤が充填された空気清浄用フィルタにより、アンモニア臭や低級脂肪酸臭等を急速に吸着、脱臭することができ、空気清浄の速効性、信頼性に優れる。
（２）空気清浄用フィルタに充填された吸着剤を構成する粒状素材がミクロポア乃至メソポアの細孔を有するポーラス材料で形成されていることにより、溶射皮膜の光触媒機能で分解しきれない化学物質や湿気が粒状素材の細孔に進入して吸着されるので、高い吸着能力を有し、化学物質等の吸着性に優れる。
（３）空気清浄用フィルタに充填された吸着剤を構成する粒状素材の外表面に光触媒粒子が溶射されて溶射皮膜が形成されているので、太陽光、紫外線ランプ、蛍光灯などに晒すことにより、粒状素材の外表面において溶射皮膜の光触媒機能で化学物質等を分解することができると共に、粒状素材の細孔内に捕捉された溶射皮膜（粒状素材の外表面）近傍の化学物質等も分解して、細孔内の化学物質等を徐々に粒状素材の外表面側に移動させて分解することができ、粒状素材の吸着能力を回復させ、初期の吸着能力を維持し続けることができ、化学物質等の吸着、分解の効率性、確実性、安定性に優れる。
The air cleaner according to claim 7 of the present invention has a configuration including the air purifying filter according to claim 6.
With this configuration, the following operations and effects can be obtained.
(1) The air purifying filter filled with the adsorbent can rapidly adsorb and deodorize ammonia odor, lower fatty acid odor, and the like, and is excellent in air purification speediness and reliability.
(2) Since the granular material constituting the adsorbent filled in the air cleaning filter is formed of a porous material having micropores or mesopore pores, chemical substances that cannot be completely decomposed by the photocatalytic function of the thermal spray coating Since moisture enters and is adsorbed into the pores of the granular material, it has a high adsorption capacity and is excellent in adsorbability of chemical substances and the like.
(3) Since the photocatalyst particles are sprayed on the outer surface of the granular material constituting the adsorbent filled in the air cleaning filter to form a sprayed coating, it is exposed to sunlight, ultraviolet lamps, fluorescent lamps, etc. In addition, chemical substances can be decomposed by the photocatalytic function of the thermal spray coating on the outer surface of the granular material, and chemical substances etc. near the thermal spray coating (outer surface of the granular material) trapped in the pores of the granular material are also decomposed. Then, the chemical substances in the pores can be gradually moved to the outer surface side of the granular material and decomposed, the adsorption capacity of the granular material can be recovered, and the initial adsorption capacity can be maintained, Excellent adsorption, decomposition efficiency, certainty and stability of chemical substances.
ここで、空気清浄機とは、いわゆる一般的な空気清浄機を始め、空気清浄機能を有する脱臭機、エアコン、加湿器などの各種機器を総称したものをいう。
空気清浄機の内部に空気清浄用フィルタと対向させて光照射部を設けることにより、空気清浄用フィルタに充填された吸着剤に必要な光を照射して光触媒粒子の光触媒機能を発揮させることができる。光照射部の光源としては、ＣＣＦＬ（冷陰極蛍光管）、ＬＥＤ等が好適に用いられる。
尚、光照射部は常に光を照射している必要はなく、手動で光照射の有無を切り替えてもよいし、タイマー等を用いて所定の時間間隔で自動的に光照射の有無を切り替えてもよい。溶射皮膜の光触媒機能が発揮されない場合でも、粒状素材が有する高い吸着能力で化学物質等を確実に吸着することができ、必要に応じて光照射部から光を照射して、光触媒機能で化学物質等を分解できるためである。
また、空気清浄機には、本願の空気清浄用フィルタ以外の各種フィルタを組合せて使用することができ、その数や配置等は適宜、選択することができる。空気清浄機の設置場所や発生する化学物質の種類等に応じて、機能の異なる各種フィルタを組合せることにより、確実かつ効率的に空気の浄化を行うことができる。
Here, the air cleaner is a generic term for various devices such as a so-called general air cleaner, a deodorizer having an air cleaning function, an air conditioner, and a humidifier.
By providing a light irradiation part facing the air cleaning filter inside the air purifier, the photocatalyst function of the photocatalyst particles can be exhibited by irradiating the adsorbent filled in the air cleaning filter with the necessary light. it can. As the light source of the light irradiation unit, CCFL (cold cathode fluorescent tube), LED, or the like is preferably used.
Note that the light irradiation unit does not always have to irradiate light, and may manually switch the presence or absence of light irradiation, or automatically switch the presence or absence of light irradiation at predetermined time intervals using a timer or the like. Also good. Even if the photocatalytic function of the thermal spray coating is not exerted, it is possible to reliably adsorb chemical substances etc. with the high adsorption ability of the granular material, and if necessary, irradiate light from the light irradiation part, and the chemical substance with photocatalytic function It is because it can decompose | disassemble etc.
In addition, various filters other than the air cleaning filter of the present application can be used in combination in the air cleaner, and the number, arrangement, etc. thereof can be selected as appropriate. By combining various filters having different functions according to the installation location of the air cleaner, the type of generated chemical substance, and the like, air can be purified reliably and efficiently.
以下、本発明の実施の形態における吸着剤、吸着剤の製造方法と空気清浄用フィルタ及び空気清浄機について、図面を参照しながら説明する。尚、本発明は以下に説明する実施の形態に限定されるものではない。
（実施の形態１）
図１は実施の形態１の吸着剤の表面部を示す要部断面模式図である。
図１中、１は本発明の実施の形態１における吸着剤、２はゼオライトでペレット状に形成されミクロポア乃至メソポアの細孔２ａを有する吸着剤１の粒状素材、３は光触媒粒子である二酸化チタン粒子３ａと抗菌性金属の銀粒子３ｂが粒状素材２の外表面に溶射されて形成された溶射皮膜、３ｃは粒状素材２の外表面に溶射付着した二酸化チタン粒子３ａと粒状素材２の外表面との間、及び重なって溶射付着した二酸化チタン粒子３ａ間に形成された細孔２ａより大きな隙間である。
この吸着剤１は、通気性を有する紙製や布製の袋、合成繊維製のネット（網状袋体）、合成樹脂製若しくは金属製の容器等で形成された吸着剤保持部材に充填する等して使用することができる。
Hereinafter, an adsorbent, an adsorbent manufacturing method, an air cleaning filter, and an air purifier according to an embodiment of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below.
(Embodiment 1)
FIG. 1 is a schematic cross-sectional view of the relevant part showing the surface portion of the adsorbent of the first embodiment.
In FIG. 1, 1 is an adsorbent according to Embodiment 1 of the present invention, 2 is a granular material of adsorbent 1 formed in a pellet form with zeolite and having micropores or mesopores 2a, and 3 is titanium dioxide which is a photocatalyst particle. Thermal spray coating formed by spraying particles 3a and silver particles 3b of antibacterial metal on the outer surface of the granular material 2, 3c is titanium dioxide particles 3a deposited on the outer surface of the granular material 2, and the outer surface of the granular material 2 And larger gaps than the pores 2a formed between the titanium dioxide particles 3a that are deposited by thermal spraying.
The adsorbent 1 is filled in an adsorbent holding member formed of a paper or cloth bag having air permeability, a net made of synthetic fiber (a net bag), a synthetic resin or a metal container, or the like. Can be used.
本実施の形態では、粒状素材２としてゼオライトを用いたが、粒状素材２はこれに限定されるものではなく、ミクロポア乃至メソポアの細孔を有するポーラス材料で形成することができる。例えば、セピオライト、活性炭、シリカゲル等を用いてもよいし、これらを複数混合して用いてもよい。
特に、親水性のゼオライト又はセピオライトと、疎水性の活性炭を組合せた場合、周囲の湿度の影響を受け難く、高湿度でも吸着性能を維持することができ、性能安定性、汎用性に優れる。
尚、粒状素材２は直径が２ｍｍ〜４ｍｍ、長さが５ｍｍ〜１０ｍｍ程度のペレット状に形成した。
粒状素材の直径が２ｍｍより小さくなるか、長さが５ｍｍより短くなるにつれ、粒状素材への溶射加工が困難になる傾向があり、直径が４ｍｍより大きくなるか、長さが１０ｍｍより長くなるにつれ、通気性がよくなる反面、吸着性が低下し易くなる傾向があることがわかったためである。
In the present embodiment, zeolite is used as the granular material 2, but the granular material 2 is not limited to this, and can be formed of a porous material having micropores or mesopores. For example, sepiolite, activated carbon, silica gel or the like may be used, or a plurality of these may be used in combination.
In particular, when a hydrophilic zeolite or sepiolite is combined with hydrophobic activated carbon, it is hardly affected by ambient humidity, can maintain adsorption performance even at high humidity, and is excellent in performance stability and versatility.
The granular material 2 was formed in a pellet shape having a diameter of 2 mm to 4 mm and a length of about 5 mm to 10 mm.
As the diameter of the granular material becomes smaller than 2 mm or the length becomes shorter than 5 mm, the thermal spraying process on the granular material tends to become difficult, and as the diameter becomes larger than 4 mm or the length becomes longer than 10 mm. This is because it has been found that the air permeability is improved, but the adsorptivity tends to be lowered.
本実施の形態では、溶射皮膜３を形成する溶射材料の主成分（光触媒粒子）として、化学的安定性に優れ、かつ高い触媒活性を有する二酸化チタンを用いた。
尚、溶射材料の主成分である二酸化チタンは、粒径が１０ｎｍ〜１０００ｎｍの二酸化チタンの粒子又はその集合体を１０μｍ〜１００μｍの粒径まで粗大化（造粒）して溶射を行った。これにより、溶射後の二酸化チタン３ａの平均粒径は１．５μｍ程度となり、粒状素材２の５０ｎｍ以下の細孔２ａを実質的に塞ぐことなく溶射被膜３を形成することができた。粗大化（造粒）した二酸化チタンの粒径が１０μｍより小さくなるにつれ、溶射後の各々の二酸化チタンの粒径が微細化し、粒状素材２の細孔２ａが二酸化チタン３ａで覆われ易くなり、粒状素材２の表面に溶射付着した二酸化チタン３ａと粒状素材２の表面との間や、重なって溶射付着した二酸化チタン３ａの微粒子間に形成される隙間３ｃが減少して、化学物質や湿気が粒状素材２の細孔２ａに入り込み難くなって吸着性能が低下し易くなる傾向があり、１００ｎｍより大きくなるにつれ、溶射被膜の表面比率が高くなり、粒状素材の吸着能力が抑制され易くなる傾向があることがわかったためである。
In the present embodiment, titanium dioxide having excellent chemical stability and high catalytic activity is used as the main component (photocatalyst particles) of the thermal spray material forming the thermal spray coating 3.
In addition, the titanium dioxide which is a main component of the thermal spray material was sprayed by coarsening (granulating) titanium dioxide particles having a particle size of 10 nm to 1000 nm or aggregates thereof to a particle size of 10 μm to 100 μm. Thereby, the average particle diameter of the titanium dioxide 3a after thermal spraying became about 1.5 μm, and the thermal spray coating 3 could be formed without substantially blocking the pores 2a of 50 nm or less of the granular material 2. As the particle size of the coarsened (granulated) titanium dioxide becomes smaller than 10 μm, the particle size of each titanium dioxide after spraying becomes finer, and the pores 2a of the granular material 2 are easily covered with the titanium dioxide 3a. The gap 3c formed between the titanium dioxide 3a sprayed and adhered to the surface of the granular material 2 and the surface of the granular material 2 or between the fine particles of the titanium dioxide 3a deposited and sprayed on top of each other is reduced, so that chemical substances and moisture are generated. It tends to be difficult to enter the pores 2a of the granular material 2 and the adsorption performance tends to be lowered, and as it becomes larger than 100 nm, the surface ratio of the sprayed coating increases, and the adsorption capacity of the granular material tends to be easily suppressed. It was because it was found that there was.
溶射皮膜３を形成する際の溶射フレームの温度は７００℃〜２，０００℃とした。
溶射フレームの温度が７００℃より低くなるにつれ、溶射する二酸化チタン３ａへの入熱が不足し易く、粒状素材２の表面に安定した溶射皮膜が形成され難くなる傾向があり、２０００℃より高くなるにつれ、溶射する二酸化チタン３ａに過剰に入熱され易くなり、アナターゼ型からルチル型へと変態する量が増加して、光触媒機能が低下し易くなる傾向があることがわかったためである。
溶射材料の噴出速度は８００ｍ/秒〜２，０００ｍ/秒とした。
溶射材料の噴出速度が８００ｍ/秒より遅くなるにつれ、溶射材料が熱の影響を受け易く、また、溶射材料が粒状素材に食い込み難くなって密着性が低下し易くなる傾向があり、２，０００ｍ/秒より速くなるにつれ、粒状素材が破壊され易くなる傾向があることがわかったためである。
The temperature of the thermal spray frame when forming the thermal spray coating 3 was set to 700 ° C. to 2,000 ° C.
As the temperature of the thermal spray frame becomes lower than 700 ° C., heat input to the sprayed titanium dioxide 3a tends to be insufficient, and a stable thermal spray coating tends to be hardly formed on the surface of the granular material 2, and becomes higher than 2000 ° C. This is because it has been found that excessive heat is easily applied to the thermally sprayed titanium dioxide 3a, the amount of transformation from anatase type to rutile type tends to increase, and the photocatalytic function tends to decrease.
The spraying speed of the thermal spray material was set to 800 m / second to 2,000 m / second.
As the spraying speed of the thermal spray material becomes lower than 800 m / sec, the thermal spray material is easily affected by heat, and the thermal spray material is less likely to bite into the granular material, and the adhesion tends to be lowered, and 2,000 m It is because it became clear that a granular material tends to be easily broken as it becomes faster than / sec.
本実施の形態では、二酸化チタン３ａに、抗菌性金属として銀を担持して抗菌性を高めた。このとき、溶射被膜３における銀粒子の平均粒径は１０μｍ程度であった。尚、抗菌性金属は、溶射皮膜３の総量に対し、０．１質量％〜１０質量％の割合で含めることができ、銀以外に銅，亜鉛，ニッケル，コバルト，アルミニウム，鉄やこれらの化合物等を用いてもよい。
溶射皮膜３中の抗菌性金属の量が０．１質量％より少なくなるにつれ、抗菌性の向上が見られなくなる傾向があり、１０質量％より多くなるにつれ、二酸化チタン３ａ（光触媒粒子）の量が減り、光触媒機能が低下すると共に、粒状素材２の細孔２ａ内に捕捉された化学物質や細孔２ａから放出された化学物質が単位時間当りに溶射皮膜３中の二酸化チタン３ａに接触できる量が低下し、光触媒機能による分解性能が低下し易くなる傾向があることがわかったためである。
In the present embodiment, the titanium dioxide 3a is supported with silver as an antibacterial metal to enhance antibacterial properties. At this time, the average particle diameter of the silver particles in the sprayed coating 3 was about 10 μm. In addition, an antibacterial metal can be included in the ratio of 0.1 mass%-10 mass% with respect to the total amount of the thermal spray coating 3, and other than silver, copper, zinc, nickel, cobalt, aluminum, iron, and these compounds Etc. may be used.
As the amount of the antibacterial metal in the thermal spray coating 3 is less than 0.1% by mass, the antibacterial improvement tends to be lost, and as the amount exceeds 10% by mass, the amount of titanium dioxide 3a (photocatalyst particles) is increased. The photocatalytic function is reduced, and the chemical substance trapped in the pores 2a of the granular material 2 and the chemical substance released from the pores 2a can contact the titanium dioxide 3a in the thermal spray coating 3 per unit time. This is because it has been found that the amount tends to decrease and the decomposition performance due to the photocatalytic function tends to decrease.
また、二酸化チタン３ａの結晶格子中に、硫黄，炭素，窒素等をドープしたり、溶射皮膜３に増感剤である鉄，銅，クロム、ニッケル等の金属錯体又は金属塩から選ばれる少なくとも１以上の化合物を混合又は担持させたりして可視光応答型の溶射皮膜としてもよい。
尚、溶射材料に用いる光触媒粒子として、二酸化チタン以外に酸化亜鉛，酸化タングステン，酸化カドミウム，酸化インジウム，酸化銀，酸化マンガン，酸化銅，酸化鉄，酸化スズ，酸化バナジウム，酸化ニオブ，酸化ジルコニウム等の金属酸化物半導体、硫化カドミウム，硫化亜鉛，硫化インジウム，硫化鉛，硫化銅，硫化モリブデン，硫化タングステン，硫化アンチモン，硫化ビスマス等の金属硫化物半導体、チタン酸ストロンチウム、セレン化カドミウム、タンタル酸カリウム及びこれらの混合物を使用することができる。
Further, at least one selected from a metal complex or metal salt such as iron, copper, chromium, nickel or the like as a sensitizer in the thermal spray coating 3 is doped in the crystal lattice of the titanium dioxide 3a. The above compounds may be mixed or supported to form a visible light responsive thermal spray coating.
In addition to titanium dioxide, photocatalyst particles used for thermal spray materials include zinc oxide, tungsten oxide, cadmium oxide, indium oxide, silver oxide, manganese oxide, copper oxide, iron oxide, tin oxide, vanadium oxide, niobium oxide, zirconium oxide, etc. Metal oxide semiconductors, cadmium sulfide, zinc sulfide, indium sulfide, lead sulfide, copper sulfide, molybdenum sulfide, tungsten sulfide, antimony sulfide, bismuth sulfide, and other metal sulfide semiconductors, strontium titanate, cadmium selenide, potassium tantalate And mixtures thereof can be used.
以上のように構成された実施の形態１の吸着剤は、以下の作用を有する。
（１）ミクロポア乃至メソポアの細孔を有するポーラス材料で形成された粒状素材と、光触媒粒子を含む溶射材料を粒状素材の外表面に溶射して形成された溶射皮膜を備えることにより、バインダ等を用いずに、粒状素材の外表面に直接溶射された光触媒粒子で粒状素材の表面全体を被覆できると共に、粒状素材の外表面に溶射付着した光触媒粒子と粒状素材の外表面との間、及び重なって溶射付着した光触媒粒子間には細孔より大きな隙間が形成されているため、溶射皮膜の光触媒機能で分解しきれない化学物質や湿気がこれらの隙間を通って粒状素材の細孔に進入し吸着されるので、ミクロポア乃至メソポアの細孔を有するポーラス材料で形成された粒状素材が有する高い吸着能力と合わせて長期間にわたって吸着性能を維持することができ、化学物質等の吸着の確実性、安定性に優れる。
（２）粒状素材の外表面に光触媒粒子が溶射されて溶射皮膜が形成されているので、太陽光、紫外線ランプ、蛍光灯などに晒すことにより、粒状素材の外表面において溶射皮膜の光触媒機能で化学物質等を分解することができると共に、粒状素材の細孔内に捕捉された溶射皮膜（粒状素材の外表面）近傍の化学物質等も分解して、細孔内の化学物質等を徐々に粒状素材の外表面側に移動させて分解することができ、粒状素材の吸着能力を回復させ、初期の吸着能力を維持し続けることができ、化学物質等の吸着、分解の効率性、確実性、安定性に優れる。
（３）粒状素材の主成分が、ゼオライト、セピオライト、活性炭、シリカゲルの何れか一種又は二種以上の混合物であることにより、化学物質と共に吸着される水分によってボロボロになるようなことが無く耐久性があり、太陽光に晒したり、電子レンジ等を用いて加熱したりして乾燥することで、臭い吸着性能や除湿性能が回復して繰り返し使用することができ、耐久性、長寿命性、省資源性に優れる。
（４）溶射材料の主成分が、粒径が１０μｍ〜１００μｍの二酸化チタンであることにより、ミクロポア乃至メソポアの細孔を有するポーラス材料で形成された粒状素材における直径５０ｎｍ未満の細孔が溶射後の二酸化チタン粒子で塞がれることがなく、ミクロポア乃至メソポアの細孔よりも大きな隙間を有するので、二酸化チタンによって分解されなかた化学物質等も粒状素材の細孔に確実に進入させて吸着させることができると共に、粒状素材の表面の細孔内に捕捉された化学物質や細孔から放出された化学物質等を二酸化チタンで効率的に分解して高い吸着能力を維持し続けることができ、化学物質等の吸着、分解の効率性、確実性、安定性に優れる。
（５）溶射材料に含まれる光触媒粒子に抗菌性金属が担持されているので、吸着剤を押入れ、冷蔵庫、下駄箱、靴内部などの脱臭剤として用いた場合に、吸着剤表面に黴や雑菌等が発生せず、脱臭効果を維持することができ、脱臭性能の安定性、長寿命性に優れる。
The adsorbent of the first embodiment configured as described above has the following action.
(1) By providing a granular material formed of a porous material having micropore or mesopore pores, and a thermal spray coating formed by spraying a thermal spray material containing photocatalyst particles on the outer surface of the granular material, a binder or the like is provided. Without being used, the entire surface of the granular material can be covered with the photocatalyst particles sprayed directly on the outer surface of the granular material, and the photocatalyst particles adhered to the outer surface of the granular material and the outer surface of the granular material overlap with each other. Since there are gaps larger than the pores between the photocatalyst particles sprayed and adhered, chemical substances and moisture that cannot be decomposed by the photocatalytic function of the thermal spray coating enter the pores of the granular material through these gaps. Because it is adsorbed, the adsorption performance can be maintained over a long period of time together with the high adsorption capacity of the granular material formed of a porous material having micropores or mesopores. Can, certainty of adsorption of such chemicals, excellent stability.
(2) Since the photocatalyst particles are sprayed on the outer surface of the granular material to form a sprayed coating, the photocatalytic function of the sprayed coating on the outer surface of the granular material can be achieved by exposure to sunlight, ultraviolet lamps, fluorescent lamps, etc. It can decompose chemical substances, etc., and also decomposes chemical substances in the vicinity of the thermal spray coating (outer surface of the granular material) trapped in the pores of the granular material, gradually reducing the chemical substances in the pores. It can be moved to the outer surface side of the granular material and decomposed, the adsorption capacity of the granular material can be recovered and the initial adsorption capacity can be maintained, the adsorption of chemical substances, the efficiency of decomposition, the certainty Excellent stability.
(3) The main component of the granular material is any one of zeolite, sepiolite, activated carbon, and silica gel, or a mixture of two or more thereof, so that it does not become tattered by moisture adsorbed with the chemical substance and is durable. It can be used repeatedly after being exposed to sunlight or heated using a microwave oven, etc. to recover odor adsorption performance and dehumidification performance. Excellent resource.
(4) Since the main component of the thermal spray material is titanium dioxide having a particle size of 10 μm to 100 μm, pores having a diameter of less than 50 nm in a granular material formed of a porous material having micropores to mesopores are sprayed. Since it is not clogged with titanium dioxide particles and has gaps larger than micropore or mesopore pores, chemical substances that have not been decomposed by titanium dioxide can surely enter and adsorb into the pores of the granular material. In addition, it is possible to efficiently decompose the chemical substances trapped in the pores on the surface of the granular material and the chemical substances released from the pores with titanium dioxide to maintain a high adsorption capacity. Excellent adsorption, decomposition efficiency, certainty, and stability of substances.
(5) Since antibacterial metal is supported on the photocatalyst particles contained in the thermal spray material, when the adsorbent is pushed in and used as a deodorant in the refrigerator, shoebox, shoe interior, etc., the surface of the adsorbent is free of wrinkles and bacteria The deodorizing effect can be maintained, and the stability of the deodorizing performance and the long life are excellent.
以上のように構成された実施の形態１の吸着剤の製造方法は、以下の作用を有する。
（１）ミクロポア乃至メソポアの細孔を有するポーラス材料で形成された粒状素材の外表面に光触媒粒子を含む溶射材料を溶射し粒状素材の外表面に溶射付着した光触媒粒子と粒状素材の外表面との間、及び重なって溶射付着する光触媒粒子間には細孔より大きな隙間を有する溶射皮膜を形成する溶射皮膜形成工程を有することにより、ミクロポア乃至メソポアの細孔を有するポーラス材料で形成された粒状素材の細孔入口を実質的に塞ぐことなく素材表面を光触媒粒子で覆うことができ、ミクロポア乃至メソポアの細孔を有するポーラス材料が有する本来の高い吸着能力を維持しつつ、光触媒機能を付与することができ、量産性、品質の安定性に優れる。
（２）溶射皮膜形成工程で粒状素材の外表面に溶射材料を溶射して溶射皮膜を形成することにより、溶射材料の一部分が粒状素材に食い込み易く、密着性の高い溶射皮膜が得られ、溶射材料に含まれる金属化合物の光触媒機能を長期間にわたって発揮することができ、長寿命性、高品質性に優れる。
The method for manufacturing the adsorbent according to Embodiment 1 configured as described above has the following effects.
(1) Photocatalyst particles sprayed on the outer surface of the granular material by spraying a thermal spray material containing photocatalyst particles on the outer surface of the granular material formed of a porous material having micropores or mesopores, and the outer surface of the granular material Between the photocatalyst particles that overlap and spray adhere to each other, and by forming a thermal spray coating process having a gap larger than the pores, a granular material formed of a porous material having micropores or mesopore pores The surface of the material can be covered with photocatalyst particles without substantially blocking the pore inlet of the material, and the photocatalytic function is imparted while maintaining the original high adsorption ability possessed by the porous material having micropores or mesopores. Can be mass-produced and has excellent quality stability.
(2) A thermal spray coating is formed by spraying a thermal spray material on the outer surface of the granular material in the thermal spray coating formation process, so that a part of the thermal spray material can easily bite into the granular material and a thermal spray coating with high adhesion is obtained. The photocatalytic function of the metal compound contained in the material can be exhibited over a long period of time, and it has excellent long life and high quality.
（実施の形態２）
図２は実施の形態２の空気清浄用フィルタを示す正面模式図である。
図２中、５は実施の形態２の空気清浄用フィルタ、６は表裏が複数の開口部７ａを有する金属製の網体７で覆われ内部に実施の形態１の吸着剤１が充填された吸着剤保持体、８は断面コ字型に形成され網体７の外周を囲繞する吸着剤保持体６の金属製の枠体である。
枠体８の下面側に網体７をスポット溶接等で固定し、吸着材１を充填した後、枠体８の上面側に網体７をスポット溶接等で固定して覆うことにより、表裏の網体７と枠体８で囲まれた吸着剤保持体６の中に吸着材１を封入することができる。
吸着剤保持体６を形成する網体７の材質としては、鉄、銅、銀、金、アルミニウム、ニッケル、ステンレス、タングステン、モリブデン等の金属が好適に用いられる。
尚、吸着剤保持体６として合成樹脂製の網状袋体等に吸着材１を充填する場合、吸着材１が充填された網状袋体等の表裏を金属製の金網やエキスパンドメタル等で覆い、外周を枠体８で囲むことにより、吸着剤保持体６を補強して形状を保つことができ、空気清浄用フィルタ５の保形性、取扱い性に優れる。
を用いてもよいし、合成樹脂を用いてもよい。
(Embodiment 2)
FIG. 2 is a schematic front view showing the air cleaning filter of the second embodiment.
In FIG. 2, 5 is an air cleaning filter according to the second embodiment, and 6 is covered with a metal net 7 having a plurality of openings 7a on the front and back sides and filled with the adsorbent 1 according to the first embodiment. An adsorbent holder 8 is a metal frame of the adsorbent holder 6 that is formed in a U-shaped cross section and surrounds the outer periphery of the net body 7.
After the mesh body 7 is fixed to the lower surface side of the frame body 8 by spot welding or the like and the adsorbent 1 is filled, the mesh body 7 is fixed and covered to the upper surface side of the frame body 8 by spot welding or the like. The adsorbent 1 can be enclosed in the adsorbent holder 6 surrounded by the net body 7 and the frame body 8.
As a material of the net body 7 that forms the adsorbent holder 6, metals such as iron, copper, silver, gold, aluminum, nickel, stainless steel, tungsten, and molybdenum are preferably used.
In the case where the adsorbent 1 is filled into a synthetic resin mesh bag or the like as the adsorbent holder 6, the front and back of the mesh bag filled with the adsorbent 1 is covered with a metal wire mesh or expanded metal, By surrounding the outer periphery with the frame body 8, the adsorbent holding body 6 can be reinforced and the shape can be maintained, and the air purifying filter 5 is excellent in shape retention and handling.
May be used, or a synthetic resin may be used.
吸着剤保持体６の開孔率は５０％〜９０％とした。吸着剤保持体６の開孔率が５０％より小さくなるにつれ、吸着剤１の露出が小さくなり、単位時間当たりに吸着剤１の細孔２ａに進入できる空気の量が少なくなって、化学物質等の吸着量が低下し易くなる傾向があり、９０％より大きくなるにつれ、吸着剤保持体６の構造強度が弱くなり、外力等による破損等が発生し易くなる傾向があることがわかったためである。
吸着剤保持体６における網体７の１つの開口部７ａの大きさは、吸着剤１が脱落せず、通気性と、吸着剤１に太陽光等を照射して光触媒機能により吸着能力を回復させるための透光性を有していればよい。
The porosity of the adsorbent holder 6 was set to 50% to 90%. As the porosity of the adsorbent holder 6 becomes smaller than 50%, the exposure of the adsorbent 1 decreases, and the amount of air that can enter the pores 2a of the adsorbent 1 per unit time decreases. It has been found that the adsorbed amount tends to decrease, and as it becomes larger than 90%, the structural strength of the adsorbent holding body 6 is weakened, and damage due to external force and the like tends to occur. is there.
The size of one opening 7a of the net body 7 in the adsorbent holder 6 is such that the adsorbent 1 does not fall off, the air permeability, and the adsorbent 1 is irradiated with sunlight or the like to recover the adsorption capacity by the photocatalytic function. What is necessary is just to have translucency for making it do.
以上のように構成された実施の形態２における空気清浄用フィルタを備えた空気清浄機について説明する。
図３は実施の形態２の空気清浄用フィルタを備えた空気清浄機の構成を示す要部側面模式図である。
図３中、１０は実施の形態２における空気清浄用フィルタ５を備えた空気清浄機、１１は空気清浄用フィルタ５の下流側に配設されたアルミ繊維フィルタ等のポストフィルタ、１２はポストフィルタ１１の下流側に配設され空気清浄機１０の内部に空気を吸入するファンである。
図３において、空気清浄機１０を運転するとファン１２が回転して室内の空気と共に空気中に含まれる塵埃や微粒子、化学物質等の処理対象物質が空気清浄機１０の内部に吸入される。
このとき、空気清浄機１０の最上流側（空気流入側）に空気清浄用フィルタ５が配設されていることにより、アンモニアや低級脂肪酸等の化学物質が短時間で効果的に吸着、分解される。空気清浄用フィルタ１を通過した空気は下流側のポストフィルタ１１で塵埃や微粒子が捕集、保持され、浄化された空気が空気清浄機１０の吹出口から吐出される。
空気清浄機１０の内部には空気清浄用フィルタ５と対向させて光照射部を設けることが好ましい。空気清浄用フィルタ５に充填された吸着剤１に必要な光を照射して光触媒粒子の光触媒機能を発揮させることができるためである。光照射部の光源としては、ＣＣＦＬ（冷陰極蛍光管）、ＬＥＤ等が好適に用いられる。光照射部は常に光を照射している必要はなく、手動で光照射の有無を切り替えてもよいし、タイマー等を用いて所定の時間間隔で自動的に光照射の有無を切り替えてもよい。
尚、空気清浄機１０の構成は本実施の形態に限定されるものではなく、さらに異なる機能を有する１乃至複数のフィルタを組合せて使用することができる。
本実施の形態では、空気清浄機１０について説明したが、空気清浄用フィルタ１は、空気清浄機能を有する脱臭機、エアコン、加湿器などの各種機器のフィルタとして用いることができる。
The air cleaner provided with the air purifying filter in Embodiment 2 configured as described above will be described.
FIG. 3 is a schematic side view of a main part showing the configuration of the air cleaner provided with the air cleaning filter of the second embodiment.
In FIG. 3, 10 is an air purifier provided with the air purifying filter 5 according to the second embodiment, 11 is a post filter such as an aluminum fiber filter disposed downstream of the air purifying filter 5, and 12 is a post filter. 11 is a fan that is disposed downstream of the air cleaner 11 and sucks air into the air purifier 10.
In FIG. 3, when the air cleaner 10 is operated, the fan 12 rotates and the processing target substances such as dust, fine particles, and chemical substances contained in the air are sucked into the air cleaner 10 together with the indoor air.
At this time, the air purifying filter 5 is disposed on the most upstream side (air inflow side) of the air purifier 10 so that chemical substances such as ammonia and lower fatty acids are effectively adsorbed and decomposed in a short time. The The air that has passed through the air cleaning filter 1 collects and holds dust and fine particles in the downstream post filter 11, and the purified air is discharged from the air outlet of the air cleaner 10.
It is preferable to provide a light irradiation part inside the air cleaner 10 so as to face the air cleaning filter 5. This is because the adsorbent 1 filled in the air cleaning filter 5 can be irradiated with necessary light to exhibit the photocatalytic function of the photocatalyst particles. As the light source of the light irradiation unit, CCFL (cold cathode fluorescent tube), LED, or the like is preferably used. The light irradiation unit does not always have to irradiate light, and the light irradiation may be switched manually, or the light irradiation may be switched automatically at a predetermined time interval using a timer or the like. .
In addition, the structure of the air cleaner 10 is not limited to this Embodiment, Furthermore, the 1 thru | or several filter which has a different function can be used in combination.
Although the air cleaner 10 has been described in the present embodiment, the air cleaning filter 1 can be used as a filter for various devices such as a deodorizer, an air conditioner, and a humidifier having an air cleaning function.
以上のように構成された実施の形態２における空気清浄用フィルタは、以下の作用を有する。
（１）複数の開口部を有する吸着剤保持体の中に吸着剤が充填されているので、空気清浄用フィルタを通過する空気中に含まれる化学物質等を効率的に吸着、分解することができ、機能性、空気清浄の効率性、確実性に優れる。
（２）吸着剤保持体の中に充填される吸着剤の粒状素材の外表面に光触媒粒子が溶射されて溶射皮膜が形成されているので、太陽光、紫外線ランプ、蛍光灯などに晒すことにより、粒状素材の外表面において溶射皮膜の光触媒機能で化学物質等を分解することができると共に、粒状素材の細孔内に捕捉された溶射皮膜（粒状素材の外表面）近傍の化学物質等も分解して、細孔内の化学物質等を徐々に粒状素材の外表面側に移動させて分解することができ、粒状素材の吸着能力を回復させ、初期の吸着能力を維持し続けることができ、長寿命性、空気清浄機能の安定性に優れる。
The air cleaning filter according to Embodiment 2 configured as described above has the following operation.
(1) Since the adsorbent holding body having a plurality of openings is filled with the adsorbent, it is possible to efficiently adsorb and decompose chemical substances contained in the air passing through the air cleaning filter. It has excellent functionality, air cleaning efficiency and certainty.
(2) Since the photocatalyst particles are sprayed on the outer surface of the adsorbent granular material filled in the adsorbent holder, and a sprayed coating is formed, it can be exposed to sunlight, ultraviolet lamps, fluorescent lamps, etc. In addition, chemical substances can be decomposed by the photocatalytic function of the thermal spray coating on the outer surface of the granular material, and chemical substances etc. near the thermal spray coating (outer surface of the granular material) trapped in the pores of the granular material are also decomposed. Then, the chemical substances in the pores can be gradually moved to the outer surface side of the granular material and decomposed, the adsorption capacity of the granular material can be recovered, and the initial adsorption capacity can be maintained, Excellent long life and stability of air cleaning function.
以上のように構成された実施の形態２における空気清浄用フィルタを備えた空気清浄機は、以下の作用を有する。
（１）吸着剤が充填された空気清浄用フィルタにより、アンモニア臭や低級脂肪酸臭等を急速脱臭することができ、空気清浄の速効性、信頼性に優れる。
（２）空気清浄用フィルタに充填された吸着剤を構成する粒状素材がミクロポア乃至メソポアの細孔を有するポーラス材料で形成されていることにより、溶射皮膜の光触媒機能で分解しきれない化学物質や湿気が粒状素材の細孔に進入して吸着されるので、高い吸着能力を有し、化学物質等の吸着性に優れる。
（３）空気清浄用フィルタに充填された吸着剤を構成する粒状素材の外表面に光触媒粒子が溶射されて溶射皮膜が形成されているので、太陽光、紫外線ランプ、蛍光灯などに晒すことにより、粒状素材の外表面において溶射皮膜の光触媒機能で化学物質等を分解することができると共に、粒状素材の細孔内に捕捉された溶射皮膜（粒状素材の外表面）近傍の化学物質等も分解して、細孔内の化学物質等を徐々に粒状素材の外表面側に移動させて分解することができ、粒状素材の吸着能力を回復させ、初期の吸着能力を維持し続けることができ、化学物質等の吸着、分解の効率性、確実性、安定性に優れる。
The air cleaner provided with the air cleaning filter according to the second embodiment configured as described above has the following operation.
(1) With an air purifying filter filled with an adsorbent, ammonia odor, lower fatty acid odor and the like can be rapidly deodorized, and the air purifying quick effect and reliability are excellent.
(2) Since the granular material constituting the adsorbent filled in the air cleaning filter is formed of a porous material having micropores or mesopore pores, chemical substances that cannot be completely decomposed by the photocatalytic function of the thermal spray coating Since moisture enters and is adsorbed into the pores of the granular material, it has a high adsorption capacity and is excellent in adsorbability of chemical substances and the like.
(3) Since the photocatalyst particles are sprayed on the outer surface of the granular material constituting the adsorbent filled in the air cleaning filter to form a sprayed coating, it is exposed to sunlight, ultraviolet lamps, fluorescent lamps, etc. In addition, chemical substances can be decomposed by the photocatalytic function of the thermal spray coating on the outer surface of the granular material, and chemical substances etc. near the thermal spray coating (outer surface of the granular material) trapped in the pores of the granular material are also decomposed. Then, the chemical substances in the pores can be gradually moved to the outer surface side of the granular material and decomposed, the adsorption capacity of the granular material can be recovered, and the initial adsorption capacity can be maintained, Excellent adsorption, decomposition efficiency, certainty and stability of chemical substances.
以下、本発明を実施例により具体的に説明する。尚、本発明はこれらの実施例に限定されるものではない。
（比較例１）
直径が２ｍｍ〜４ｍｍ、長さが５ｍｍ〜１０ｍｍ程度のゼオライト製のペレット（粒状素材）をそのまま吸着剤として使用した。
Hereinafter, the present invention will be specifically described by way of examples. The present invention is not limited to these examples.
(Comparative Example 1)
A zeolite pellet (granular material) having a diameter of 2 mm to 4 mm and a length of about 5 mm to 10 mm was used as an adsorbent as it was.
（実施例１）
比較例１と同様の直径が２ｍｍ〜４ｍｍ、長さが５ｍｍ〜１０ｍｍ程度のゼオライト製のペレット（粒状素材）の外表面に、二酸化チタンを含む溶射材料によって溶射皮膜を形成したものを吸着剤として使用した。尚、溶射材料の主成分である二酸化チタンは、粒径が１０ｎｍ〜１０００ｎｍの二酸化チタンの粒子又はその集合体を１０μｍ〜１００μｍの粒径まで粗大化（造粒）したものであり、溶射フレームの温度は７００℃〜２，０００℃、溶射材料の噴出速度は８００ｍ/秒〜２，０００ｍ/秒であった。
Example 1
As an adsorbent, a thermal spray coating formed of a thermal spray material containing titanium dioxide on the outer surface of a zeolite pellet (granular material) having a diameter of 2 mm to 4 mm and a length of about 5 mm to 10 mm, similar to Comparative Example 1. used. Titanium dioxide, which is the main component of the thermal spray material, is obtained by coarsening (granulating) titanium dioxide particles having a particle size of 10 nm to 1000 nm or aggregates thereof to a particle size of 10 μm to 100 μm. The temperature was 700 ° C. to 2,000 ° C., and the spraying speed of the sprayed material was 800 m / sec to 2,000 m / sec.
表１に（比較例１）及び（実施例１）の吸着剤によるアンモニアガスの吸着状況を示す。
本発明は、気化した化学物質等を光触媒機能で分解して脱臭すると共に、分解能力を超えた化学物質や湿気を細孔に吸着して脱臭、除湿すると共に、細孔における化学物質や湿気の吸着能力が飽和した際には、太陽光などに晒すことにより、化学物質を光触媒機能で分解し、細孔に吸着した湿気を放出させて吸着能力を回復させ、化学物質や湿気の吸着能力を維持し続けることができ、化学物質等の吸着、分解の効率性、確実性、安定性に優れる分解性能の高い吸着剤の提供、ミクロポア乃至メソポアの細孔を有するポーラス材料で形成された粒状素材の細孔入口を実質的に塞ぐことなく素材表面を光触媒粒子で覆うことができ、粒状素材が有する本来の高い吸着能力と合わせて長期間にわたって吸着性能を維持することができる吸着剤の製造方法の提供、該吸着剤を用いることにより、ホテル、介護施設、病院等の各種施設におけるアンモニア臭や低級脂肪酸臭等を急速吸着・脱臭することができ、速効性、信頼性に優れる高機能な空気清浄用フィルタ及び空気清浄機の提供を行い、各種施設の環境改善に貢献することができる。 The present invention decomposes and deodorizes vaporized chemical substances etc. with a photocatalytic function, adsorbs chemical substances and moisture exceeding the decomposition ability to the pores to deodorize and dehumidify them, and removes chemical substances and moisture in the pores. When the adsorption capacity is saturated, the chemical substance is decomposed by the photocatalytic function by exposing it to sunlight, etc., and moisture adsorbed in the pores is released to restore the adsorption capacity, thereby improving the adsorption capacity of chemical substances and moisture. Adsorption of chemical substances, etc. that can be maintained, provision of adsorbents with high decomposition performance that is excellent in decomposition efficiency, certainty, and stability, granular materials formed of porous materials having micropores or mesopore pores The surface of the material can be covered with photocatalyst particles without substantially blocking the pore inlets, and the adsorbent can be maintained over a long period of time together with the original high adsorption capacity of the granular material. By providing the method and using the adsorbent, ammonia odor and lower fatty acid odor can be rapidly adsorbed and deodorized in various facilities such as hotels, nursing homes, hospitals, etc. By providing an air purifying filter and an air purifier, it is possible to contribute to improving the environment of various facilities.
１ 吸着剤
２ 粒状素材
２ａ 細孔
３ 溶射皮膜
３ａ 二酸化チタン粒子
３ｂ 銀粒子
３ｃ 隙間
５ 空気清浄用フィルタ
６ 吸着剤保持体
７ 網体
７ａ 開口部
８ 枠体
１０ 空気清浄機
１１ ポストフィルタ
１２ ファン
DESCRIPTION OF SYMBOLS 1 Adsorbent 2 Granular material 2a Fine pore 3 Thermal spray coating 3a Titanium dioxide particle 3b Silver particle 3c Crevice 5 Air cleaning filter 6 Adsorbent holding body 7 Net body 7a Opening part 8 Frame body 10 Air cleaner 11 Post filter 12 Fan
Claims (7)
ミクロポア乃至メソポアの細孔を有するポーラス材料で形成された粒状素材の外表面に光触媒粒子を含む溶射材料を溶射し前記粒状素材の外表面に溶射付着した前記光触媒粒子と前記粒状素材の外表面との間、及び重なって溶射付着する前記光触媒粒子間には前記細孔より大きな隙間を有する溶射皮膜を形成する溶射皮膜形成工程を備えていることを特徴とする吸着剤の製造方法。 A method for producing an adsorbent according to any one of claims 1 to 4,
The photocatalyst particles sprayed on the outer surface of the granular material by spraying a thermal spray material containing photocatalyst particles on the outer surface of the granular material formed of a porous material having micropores or mesopores, and the outer surface of the granular material; And a thermal spray coating forming step of forming a thermal spray coating having a gap larger than the pores between the photocatalyst particles which are deposited in thermal spraying with each other.
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| US10807070B2 (en) | 2017-09-12 | 2020-10-20 | Fuji Xerox Co., Ltd. | Silica titania composite aerogel particle, photocatalyst forming composition, and photocatalyst |
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| US10538434B2 (en) | 2017-09-08 | 2020-01-21 | Fuji Xerox Co., Ltd. | Titanium oxide aerogel particle, photocatalyst forming composition, and photocatalyst |
| US10563018B2 (en) | 2017-09-08 | 2020-02-18 | Fuji Xerox Co., Ltd. | Titanium oxide aerogel particle, photocatalyst-forming composition, and photocatalyst |
| US10807070B2 (en) | 2017-09-12 | 2020-10-20 | Fuji Xerox Co., Ltd. | Silica titania composite aerogel particle, photocatalyst forming composition, and photocatalyst |
| US10807058B2 (en) | 2017-09-12 | 2020-10-20 | Fuji Xerox Co., Ltd. | Silica-titania composite aerogel particle, photocatalyst-forming composition, and photocatalyst |
| JP2019210112A (en) * | 2018-06-06 | 2019-12-12 | 株式会社フジコー | Antibacterial belt and method for manufacturing the same |
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