KR20030001655A - Coupling system of low-temperature catalyst and photocatalyst for indoor air quality control - Google Patents
Coupling system of low-temperature catalyst and photocatalyst for indoor air quality control Download PDFInfo
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- KR20030001655A KR20030001655A KR1020010036456A KR20010036456A KR20030001655A KR 20030001655 A KR20030001655 A KR 20030001655A KR 1020010036456 A KR1020010036456 A KR 1020010036456A KR 20010036456 A KR20010036456 A KR 20010036456A KR 20030001655 A KR20030001655 A KR 20030001655A
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- filter
- photocatalyst
- air
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- 239000003054 catalyst Substances 0.000 title claims abstract description 41
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 33
- 230000008878 coupling Effects 0.000 title abstract 2
- 238000010168 coupling process Methods 0.000 title abstract 2
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- 238000003908 quality control method Methods 0.000 title 1
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
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- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 claims description 22
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- 238000000034 method Methods 0.000 claims description 10
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- 239000011572 manganese Substances 0.000 claims description 9
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 229910052749 magnesium Inorganic materials 0.000 claims description 5
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- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 4
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 241000894006 Bacteria Species 0.000 abstract description 12
- 239000012855 volatile organic compound Substances 0.000 abstract description 10
- 239000000428 dust Substances 0.000 abstract description 7
- 238000000746 purification Methods 0.000 abstract description 2
- 239000011362 coarse particle Substances 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 18
- 230000001877 deodorizing effect Effects 0.000 description 16
- 230000001699 photocatalysis Effects 0.000 description 10
- 241000233866 Fungi Species 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000000126 substance Substances 0.000 description 8
- 229910004298 SiO 2 Inorganic materials 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 6
- 238000000465 moulding Methods 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
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- 150000002894 organic compounds Chemical class 0.000 description 4
- 229910052763 palladium Inorganic materials 0.000 description 4
- 229910052697 platinum Inorganic materials 0.000 description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 4
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 3
- 230000000844 anti-bacterial effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 3
- 238000013032 photocatalytic reaction Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 239000002386 air freshener Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
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- 150000002739 metals Chemical class 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- -1 methylmeraptan Chemical compound 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000001443 photoexcitation Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 229910052712 strontium Inorganic materials 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 229910000608 Fe(NO3)3.9H2O Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000004817 gas chromatography Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- 238000005342 ion exchange Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
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- HCJLVWUMMKIQIM-UHFFFAOYSA-M sodium;2,3,4,5,6-pentachlorophenolate Chemical compound [Na+].[O-]C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl HCJLVWUMMKIQIM-UHFFFAOYSA-M 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2068—Other inorganic materials, e.g. ceramics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0471—Surface coating material
- B01D2239/0485—Surface coating material on particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
- B01D2279/50—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for air conditioning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
- B01D2279/65—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for the sterilisation of air
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Epidemiology (AREA)
- General Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Analytical Chemistry (AREA)
- Biomedical Technology (AREA)
- Geology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
Description
본 발명은 실내의 실온에서도 악취의 제거능이 우수하고 반영구적으로 사용할 수 있는 저온 하니컴형 탈취촉매에 난분해성 악취와 휘발성 유기화합물(VOCs)의 제거능이 우수하고 먼지 등에 안정하며 항균 성능을 가진 광촉매를 조합시킴으로써 성능과 수명을 크게 향상시킨 고성능 실내 공기정화 시스템, 광촉매 필터 및 저온 촉매를 이용한 탈취필터 제조에 관한 것이다.The present invention combines a high-temperature honeycomb deodorization catalyst that can be used semi-permanently even at room temperature in the room, and a photocatalyst having excellent anti-decomposable odor and volatile organic compounds (VOCs) removal ability, stable to dust, and antibacterial performance. The present invention relates to a high performance indoor air purification system, a photocatalyst filter, and a deodorization filter using a low temperature catalyst, which greatly improves performance and lifespan.
일반적으로 취기 제어는 악취 물질의 농도를 저하시켜 냄새의 강도를 줄이는 방법과 악취를 다른 냄새로 바꾸거나 다른 냄새로서 마스킹시켜 기분 나쁘지 않게 하는 방법으로 분류할 수 있다. 최근의 탈취 기술은 공기청정기, 방향제, 에어컨이나 난방기 및 냉장고 등에 탈취 능력이 뛰어난 탈취필터, 오존 및 탈취 촉매 등을 사용하는 추세이다. 탈취 필터의 경우 주로 활성탄이나 제올라이트를 흡착제로 사용하고 있다. 최근에 개발되어 시판되고 있는 저압력 손실 탈취 필터의 경우, 압력 손실을 낮게 유지하기 위해 필터 형상을 6각형 셀모양의 종이 하니컴으로 만들고, 부착력이 큰 점착제를 셀 내벽에 도포한 다음 그 위에 담배 냄새에 유효한 무처리 파쇄상의 활성탄 탈취제를 담지시켜 사용하고 있다. 현재 시판중인 공기청정기의 경우 대부분 공기중의 부유분진을 항균필터와 전기집진장치 또는 헤파필터에 흡착시키고, 악취 등 가스상태의 오염물질은 활성탄 필터로 흡착 제거하는 구조로 되어있다. 이러한 구조를 가진 공기청정기의 경우 복잡한 구조와 필터 흡착량의 한계에의해 장기적으로 사용할 경우 필터를 청소해 주거나 활성탄을 주기적으로 교체해야 하는 번거로움이 있다. 흡착 필터에 의한 제거 방법외에 오존이나 다기능성 촉매, 플라즈마에 의한 악취 제거 방법들이 모색되고 있다. 이중 오존을 이용하여 악취를 제거하는 방법은 일본 등에서 이미 상품화가 되어 사용되고 있으나, 오존 농도가 높으면 호흡기를 다치게 하는등 인체에 유해한 작용을 하기 때문에 적용의 한계가 있다. 이 문제를 해결한 것으로 PPCP 및 SPCP로 불려지는 새로운 플라즈마 기술에 촉매를 결합시킨 고도의 탈취방식이 최근 개발 중인 것으로 알려져 있다.In general, odor control can be classified into a method of reducing the concentration of malodorous substances to reduce the intensity of the odor and a method of changing the odor to another odor or masking it with another odor to make it unpleasant. Recent deodorization technology is a trend to use a deodorizing filter, ozone and deodorizing catalyst having excellent deodorizing ability in air purifiers, air fresheners, air conditioners or heaters and refrigerators. In the case of the deodorizing filter, activated carbon or zeolite is mainly used as an adsorbent. In the case of the recently developed low pressure loss deodorizing filter, in order to keep the pressure loss low, the filter shape is made of hexagonal cell-shaped paper honeycomb, and the adhesive with high adhesion is applied to the inner wall of the cell, and then there is a cigarette smell on it. It is used to carry an effective untreated shredded activated carbon deodorant. Most commercial air cleaners are designed to adsorb suspended particulates in the air to antibacterial filters, electrostatic precipitators, or hepa filters, and to remove and remove gaseous contaminants such as odors with activated carbon filters. In the case of the air cleaner having such a structure, the filter has to be cleaned or the activated carbon needs to be replaced periodically in the long term due to the complicated structure and the limitation of the filter adsorption amount. In addition to the removal method using an adsorption filter, methods for removing odor by ozone, a multifunctional catalyst, and plasma have been sought. The method of removing odor by using ozone is already commercialized and used in Japan, but there is a limit of application because the ozone concentration has a harmful effect on the human body such as hurting the respiratory system. In order to solve this problem, it is known that a high degree of deodorization method incorporating a catalyst into a new plasma technology called PPCP and SPCP is being developed recently.
탈취촉매의 경우 일본과 우리나라에서 냉장고, 가스 렌지 등에 하니컴 형태로 시판되어 사용되고 있으며, 수명이 흡착제나 방향제 등에 비해 길지만, 한 두 가지 형태의 악취제거에만 성능이 있고 전반적으로 성능이 낮다는 단점이 있다. 저온 탈취촉매를 필터로써 공기청정기나 냉장고 및 가스 렌지 등에 적용하기 위해서는 저압력 손실의 하니컴 형태로 만들어야 하는데 성형기술의 어려움 때문에 우리나라에서는 몇 개의 업체 정도가 이 기술을 보유하고 있다.Deodorization catalysts are commercially available in the form of honeycomb in refrigerators and gas stoves in Japan and Korea, and have a longer lifespan than adsorbents and air fresheners. . In order to apply low-temperature deodorization catalyst as a filter to air cleaner, refrigerator and gas stove, it has to be made in the form of honeycomb of low pressure loss. Due to the difficulty of molding technology, several companies have this technology in Korea.
최근에 일본 등 선진국에서 강력한 산화작용으로 휘발성 유기화합물, 세균 및 악취 제거를 할 수 있는 광촉매를 이용하는 연구가 활발히 진행되고 있으며 일부 제품으로 시판되고 있다.Recently, researches using photocatalysts capable of removing volatile organic compounds, bacteria and odors by strong oxidation in advanced countries such as Japan have been actively conducted and are being marketed as some products.
광촉매 반응은 우선 전자(e-)와 정공(h+)을 생성하는 광여기 반응이 일어나고 하이드로실 라디칼이나 슈퍼옥사이드 라디칼과 같은 강한 산화력을 갖는 라디칼을 생성한 다음, 유기물이나 세균과 반응하여 이들을 제거하는 메카니즘으로 구성된다. 또한 광여기 반응에 의해 생성된 전자와 정공은 유기화합물이나 세균과 직접적으로 반응하여 최종적으로 물과 이산화탄소로 남게 되어 탈취 및 살균작용을 하게된다.Photocatalysis is first electron (e -) and holes (h +) a happening photoexcitation reaction to produce a hydro-chamber generates a radical or radicals having a strong oxidizing power, such as superoxide radicals, and remove them to react with the organic material and bacteria It consists of a mechanism. In addition, the electrons and holes generated by the photoexcitation reaction directly react with organic compounds or bacteria, and finally remain as water and carbon dioxide to deodorize and sterilize.
이러한 광촉매를 이용한 공기청정기가 최근에 우리나라에서도 몇 회사에서 시판되고 있으나 저농도의 휘발성 유기화합물 제거에 국한되고 악취제거에는 성능이 높지 않을 뿐 아니라 전기집진장치의 부착으로 값이 고가이며 전기를 과소비하는 단점이 있어 사용에 한계가 있고, 가격이나 성능 면에서 소비자의 관심을 끌지 못하고 있는 실정이다.Air cleaners using photocatalysts have recently been marketed by several companies in Korea, but they are limited to the removal of volatile organic compounds in low concentrations and are not high in removing odors. They are also expensive due to the installation of electrostatic precipitators and consume too much electricity. Because of this, there is a limit to use, and the situation is not attracting the attention of consumers in terms of price and performance.
본 발명은 상기한 바와 같이 종래 기술의 여러 문제점들을 개선하기 위하여 안출된 것으로, 본 발명의 목적은 공기중의 휘발성 유기화합물이나 일반세균 및 곰팡이균을 제거하는데 우수한 활성을 가진 광촉매 유니트(unit)와 실온에서 메틸메르갑탄, 트리메틸아민과 같은 악취물질에 대한 제거 능이 우수한 탈취촉매를 하니컴 형태로 성형한 탈취필터를 결합한 공기청정시스템을 제공하는데 그 목적이 있다.The present invention has been made to solve the problems of the prior art as described above, and an object of the present invention is to provide a photocatalyst unit having excellent activity in removing volatile organic compounds, general bacteria and fungi in the air; An object of the present invention is to provide an air cleaning system in which a deodorizing catalyst having excellent removal ability against odorous substances such as methyl meraptan and trimethylamine at room temperature is combined with a deodorizing filter formed in a honeycomb form.
본 발명의 다른 목적은 광촉매 졸을 금속 플레이트, 금속 메쉬, 유리구슬, 광 섬유 등에 견고하게 코팅하고, 이들 담지체를 광촉매 반응기 내부에 일정한 공기 유로를 형성하는 나선형인 금속 판에 고정하여 비표면적의 증가와 함께 높은 광촉매 효율을 제공하는데 있다.Another object of the present invention is to firmly coat a photocatalyst sol on a metal plate, metal mesh, glass beads, optical fibers, etc., and fix the carrier to a spiral metal plate that forms a constant air flow path within the photocatalytic reactor. With increasing photocatalyst efficiency.
본 발명의 또 다른 목적은 단순히 흡착으로만 악취물질을 제거할 수 있는 활성탄으로 제조된 종래의 탈취필터에 비하여 악취물질의 흡착뿐만 아니라 촉매작용에 의한 제거를 할 수 있는 탈취촉매를 25 ∼ 400 CPSI (Cell Per Square Inch)의 셀 크기 정도의 크기가 작고 셀 사이의 두께가 얇으면서도 강도와 성능이 유지되는 하니컴 형태의 탈취필터로 성형하여 본 발명시스템의 높은 성능과 긴 수명을 제공하는데 있다.Another object of the present invention is 25 ~ 400 CPSI deodorizing catalyst which can remove not only the odorous substances by adsorption but also catalytic removal as compared to the conventional deodorization filter made of activated carbon that can remove odorous substances by simply adsorption. (Cell Per Square Inch) is a small size of the cell size and the thickness between the cells, while forming a honeycomb-type deodorizing filter that maintains the strength and performance while providing a high performance and long life of the system of the present invention.
상기 목적을 달성하기 위한 본 발명의 형태에 따르면, 본체(1)와 본체후방에 위치하여 오염된 공기를 송풍시키는 팬(8)과 모터(9), 흡입부의 흡입그릴(2) 뒤에 설치된 프리필터(3)를 통해 일차적으로 큰 입자를 제거한 후에 미세 입자를 제거하기 위한 집진필터(4), 그리고 휘발성 유기화합물 분해와 병원성 세균이나 곰팡이등을 제거하는 광촉매부(5), 트리메틸아민과 메틸메르갑탄 같은 악취를 저온에서 제거하는 저온 탈취촉매 필터(7)등으로 구성되는 것을 특징으로 하는 공기정화 시스템이 제공된다.According to an aspect of the present invention for achieving the above object, a pre-filter installed in the rear of the main body 1 and the main body, the fan 8, the motor 9, and the suction grille 2 of the suction part which blows contaminated air. (3) a dust collecting filter for removing fine particles after removing large particles primarily, and a photocatalyst for removing volatile organic compounds and removing pathogenic bacteria and fungi (5), trimethylamine and methylmeraptan An air purifying system is provided, comprising a low temperature deodorization catalyst filter 7 or the like which removes the same odor at a low temperature.
본 발명의 다른 형태에 따르면, 광촉매 TiO2졸을 여러 기재에 견고하게 코팅하기 위하여 무기 바인더와 TiO2배합 비율을 20 : 80 ∼ 60 : 40 중량%로 하고, Fe, Al, Si, Cu, Ni, Mg, Ag, Au, Cr, Sr, V, Ca, Zn, Pd, Pt 및 Rh 등으로부터 하나 이상의 금속을 소량 첨가하여 한 층이나 다층 구조로 제조하는 것을 특징으로 하는 광촉매 반응 장치가 포함된 공기 정화 시스템을 제공할 수 있다.According to another aspect of the present invention, in order to solidly coat the photocatalyst TiO 2 sol on various substrates, the mixing ratio of the inorganic binder and TiO 2 is 20:80 to 60:40 wt%, and Fe, Al, Si, Cu, Ni Air containing a photocatalytic reaction device, characterized in that a single layer or multilayer structure is added by adding a small amount of at least one metal from Mg, Ag, Au, Cr, Sr, V, Ca, Zn, Pd, Pt and Rh Purification systems can be provided.
본 발명의 또 다른 형태에 따르면, 공기 청정기에 광촉매 시스템과 결합하는 저온 탈취촉매 필터에 있어서, 세라믹 담지체와 1종 이상의 금속산화물이 담지된탈취촉매에 유·무기 바인더를 첨가하여 압출 성형한 하니컴 형태의 필터로써 저온에서 메틸메르캅탄, 트리메틸아민, 황화 수소 등의 악취 가스를 산화 분해 제거하는 것을 특징으로 하는 저온 탈취촉매 필터가 포함된 공기 정화 시스템을 제공할 수 있다.According to still another aspect of the present invention, in a low temperature deodorization catalyst filter which is combined with a photocatalyst system in an air purifier, honeycomb extruded by adding an organic and inorganic binder to a deodorization catalyst on which a ceramic support and at least one metal oxide are supported. It is possible to provide an air purification system including a low temperature deodorization catalyst filter, which is characterized by oxidatively removing odor gases such as methyl mercaptan, trimethylamine, hydrogen sulfide and the like at low temperature.
도 1은 본 발명에 의한 공기 정화시스템의 종단면도.1 is a longitudinal sectional view of an air purification system according to the present invention;
도 2는 본 발명에 의한 공기 정화시스템을 분리하여 나타낸 사시도.Figure 2 is a perspective view showing a separate air purification system according to the present invention.
도 3는 본 발명에 의한 공기 정화시스템에 설치된 광촉매 반응기 및 광반응기 내부에 설치된 나선형 금속 플레이트에 의한 공기 유로를 나타내는 개략 사시도3 is a schematic perspective view showing an air flow path by a photocatalyst reactor installed in an air purification system according to the present invention and a spiral metal plate installed inside the photoreactor;
도 4A 내지 도 4D는 본 발명에 의한 광촉매 반응기 내부에 설치되는 광촉매 담지체의 예를 나타내는 개략 사시도.4A to 4D are schematic perspective views showing an example of a photocatalyst carrier installed in the photocatalytic reactor according to the present invention.
도 5는 본 발명에 의한 탈취촉매 필터를 나타내는 개략 사시도.5 is a schematic perspective view showing a deodorizing catalyst filter according to the present invention.
도면의 주요 부분에 대한 부호의 설명Explanation of symbols for the main parts of the drawings
1 : 본체 2 : 흡입그릴1 body 2 suction grill
3 : 프리필터 4 : 집진필터3: prefilter 4: dust collecting filter
5 : 광촉매 유니트 6 : 자외선 램프5: photocatalytic unit 6: ultraviolet lamp
7 : 탈취필터 8 : 팬7: deodorizing filter 8: fan
9 : 모터 10 : 배출그릴9: motor 10: discharge grill
12 : 광촉매 반응기 13 : 반사체12 photocatalytic reactor 13 reflector
14 : 나선형 금속 플레이트14: spiral metal plate
상기 목적을 달성하기 위하여 본 발명은, 공기 정화 시스템의 외관을 구성하는 본체(1)를 구비한다. 본 시스템의 전면부에는 흡입그릴(2)과 본체의 후방에는 배출그릴(10)이 설치되어 있으며 시스템의 배출그릴 앞에 위치하여 있는 모터(9)에 연결된 팬(8)에 의해 오염된 공기가 유입되고 난 후 배출된다. 이러한 오염된 공기가 프리필터와 집진필터를 통하여 광촉매 유니트(5)로 유입되면 광반응기 내부에 설치되어 있는 나선형 금속 플레이트(14)에 의해 유로가 형성되고, 금속 플레이트 위에 광촉매가 코팅된 유리 구슬(18)이나 금속 메쉬(19) 및 광 섬유(20)에 의하여 휘발성 유기화합물과 일반 세균, 곰팡이 균이 거의 완전히 제거되고 트리메틸아민이나 메틸메르갑탄과 같은 악취물질이 일부 제거된다. 또한 잔류하고 있는 트리메틸아민이나 메틸메르갑탄, 황화수소, 암모니아 등은 저온 탈취촉매가 하니컴 형태로 성형된 탈취필터에서 거의 완전히 제거된다.In order to achieve the above object, the present invention includes a main body (1) constituting the appearance of the air purification system. The suction grill (2) is installed at the front of the system and the discharge grill (10) is installed at the rear of the main body, and the air contaminated by the fan (8) connected to the motor (9) located in front of the discharge grill of the system is introduced. After it is discharged. When the contaminated air enters the photocatalytic unit 5 through the prefilter and the dust collecting filter, a flow path is formed by the spiral metal plate 14 installed inside the photoreactor, and the glass beads coated with the photocatalyst on the metal plate ( 18) or the metal mesh 19 and the optical fiber 20 almost completely remove volatile organic compounds, common bacteria and fungi, and some odorous substances such as trimethylamine and methylmeraptan. The remaining trimethylamine, methylmeraptan, hydrogen sulfide, ammonia and the like are almost completely removed from the deodorization filter in which the low temperature deodorization catalyst is formed into a honeycomb form.
본 시스템을 구성하는 광촉매 유니트에서는 광조사에 의해 생성되는 전자와 정공, 하이드록시 라디칼과 슈퍼옥사이드 라디칼등에 의해 유기화합물이 완전 산화 분해되어 최종적으로는 이산화탄소와 물을 생성한다. 여기서 상기 광촉매는 TiO2이며 이를 여러 기재에 견고하게 코팅하기 위해서는 무기바인더인 SiO2를 첨가해야하며, 광활성 증진을 위해 Fe, Al, Si, CU, Ni, Mg, Ag, Au, Cr, Sr, V, Ca, Zn, Pd, Pt 및 Rh 등으로부터 하나 이상의 금속을 선택하여 소량 첨가해야 한다. 상세히 설명하면 광촉매로써 사용되는 TiO2와 무기 바인더로써 사용되는 SiO2의 배합비율은 바람직하게는 20 : 80 ∼ 90 : 10 중량%이며, 더욱 바람직하게는 30 : 70 ∼ 40 : 60 중량%의 배합비율을 갖는다. 또한 광촉매 활성 증진을 위한 TiO2에 대한 금속첨가량은 바람직하게는 0.001 ∼ 40 중량%이며 더욱 바람직하게는 0.01 ∼ 20 중량%이다.In the photocatalyst unit constituting the system, organic compounds are completely oxidized and decomposed by electrons and holes generated by light irradiation, hydroxy radicals and superoxide radicals, and finally carbon dioxide and water are generated. Here, the photocatalyst is TiO 2 and in order to coat it on various substrates, SiO 2 , an inorganic binder, must be added, and Fe, Al, Si, CU, Ni, Mg, Ag, Au, Cr, Sr, One or more metals from V, Ca, Zn, Pd, Pt and Rh must be selected and added in small amounts. In detail, the blending ratio of TiO 2 used as the photocatalyst and SiO 2 used as the inorganic binder is preferably 20:80 to 90:10 wt%, more preferably 30:70 to 40:60 wt%. Has a ratio. In addition, the amount of metal added to TiO 2 for enhancing photocatalytic activity is preferably 0.001 to 40% by weight, more preferably 0.01 to 20% by weight.
본 발명에서 구현하고자하는 공기 청정 시스템용 저온 탈취촉매 하니컴 필터에서 담지체로는 활성탄, 알루미나, 실리카, 알루미노 실리케이트, 타이타니아 및 제올라이트(ZSM-5) 등이 사용될 수 있다. 보다 바람직하게는 제올라이트(ZSM-5), 알루미나 및 타이타니아가 적절하다. 촉매의 성능을 향상시키기 위하여 담지체에 도입되는 활성금속으로는 Pt, Pd, Au, Ag, Ni, Fe, Zn, Cu, Mn, Mg 및 Ca등을 사용할 수 있다. 보다 바람직하게는 비용이 저렴하고 촉매를 장기간 사용해도 활성 저하가 적으며 대장균등에 대한 항균 기능이 있는 Ag, Mn 및 Cu를 사용한다.Activated carbon, alumina, silica, aluminosilicate, titania and zeolite (ZSM-5) may be used as a support in the low temperature deodorization catalyst honeycomb filter for an air cleaning system to be implemented in the present invention. More preferably zeolite (ZSM-5), alumina and titania are suitable. Pt, Pd, Au, Ag, Ni, Fe, Zn, Cu, Mn, Mg and Ca may be used as the active metal introduced into the support to improve the performance of the catalyst. More preferably, Ag, Mn, and Cu, which are inexpensive, have a low activity deterioration even after long-term use of the catalyst, and have antibacterial function against E. coli, are used.
상기 본 발명의 저온 탈취촉매 필터에 있어서, 담지체로는 제올라이트(ZSM-5), 알루미나 및 타이타니아가 바람직하고 활성금속으로는 은, 망간 및 구리 중 하나 이상이 포함되어야 하고 은이 0.1 내지 20 중량%, 망간이 0.2 내지 30 중량% 및 구리가 0.2 내지 30중량%를 포함하는 것을 특징으로 한다. 본 발명에서 촉매의 제조는 상기의 담지체를 물이나 유기 용매에 넣고, 상기의 활성금속 중 하나 이상을 포함하는 수용액 또는 유기 용액을 서서히 또는 직접 도입하는 단계, 이 혼합물을 수분 - 수 시간 동안 스터링이나 기타의 방법에 의하여 격렬히 혼합하는 단계, 혼합 후 물이나 유기 용매를 증발시키거나 여과 등의 방법으로 제거하여 활성 금속을 담지체에 함침 또는 이온교환시키는 단계, 함침된 시료를 50 ℃ ∼ 150 ℃ 정도에서 수 시간 동안 건조하는 단계 및 건조된 시료를 공기 존재 하에 300 ℃∼500 ℃에서 수 시간 동안 소성시키는 단계와 탈취기능을 향상시키기 위하여 활성탄, Pt, Pd, Ni, Fe, Zn, Mg 및 Ca등의 첨가물을 혼합하거나 도입하는 단계를 포함하는 것을 특징으로 한다. 저온 탈취촉매 필터 성형은 유·무기 바인더를 첨가하여 진공 성형 압출로 성형할 수 있다.In the low-temperature deodorization catalyst filter of the present invention, the support is preferably zeolite (ZSM-5), alumina and titania, and the active metal should include at least one of silver, manganese and copper, and 0.1 to 20% by weight of silver, Manganese is characterized in that it comprises 0.2 to 30% by weight and copper is 0.2 to 30% by weight. The preparation of the catalyst in the present invention comprises the steps of placing the carrier in water or an organic solvent and slowly or directly introducing an aqueous solution or an organic solution containing at least one of the above active metals, and stirring the mixture for several minutes to several hours. Or vigorously mixing by water or other method, impregnating or ion-exchanging the active metal in the carrier by evaporating water or organic solvent after mixing or removing by filtration or the like. Drying for several hours at a degree and calcining the dried sample for several hours at 300 ° C. to 500 ° C. in the presence of air and for improving deodorization function of activated carbon, Pt, Pd, Ni, Fe, Zn, Mg and Ca Characterized in that it comprises the step of mixing or introducing an additive, such as. Low temperature deodorization catalyst filter molding can be molded by vacuum molding extrusion by adding an organic and inorganic binder.
이하 실시예 및 비교예를 첨부된 도면과 표를 참조하여 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and the accompanying examples.
도 1내지과 도 5는 본 발명에 의한 공기정화시스템을 설명하기 위하여 나타낸 도면이다. 먼저 도 1과 도 2를 설명하면 도 1은 공기정화시스템을 나타내는 종단면도이며 도 2는 간략한 분해사시도이다. 본 시스템 외관을 구성하는 본체와 입구그릴과 배출그릴이 본체의 전방과 후방에 각각 위치하며, 1 차적으로 큰 입자를 차단하기 위하여 프리필터(3)을 설치하고 미세한 입자를 차단하기 위하여 집진필터를 부착하였다. 또한 광반응에 의한 유기화합물, 일반세균, 곰팡이 균을 제거할 수 있는 광촉매 유니트(5)가 있으며 그 내부에 자외선 램프(6)가 장착되었다. 또한 저온탈취 촉매를 하니컴 형태로 성형한 탈취필터(7)가 있어 단순 흡착 및 촉매반응에의한 악취물질의 우수한 제거능을 갖도록 하며 마지막으로 오염된 공기를 유입 및 배출하도록 송풍장치를 부착하였다. 따라서 종래에 사용하던 공기정화기의 탈취필터에 비하여 수명이 길고 우수한 성능을 가지며 광촉매에 의해 살균 작용을 가능하게 함으로써 높은 공기정화 효율을 나타낸다.1 to 5 are diagrams for explaining the air purification system according to the present invention. First, Figures 1 and 2, Figure 1 is a longitudinal cross-sectional view showing an air purification system, Figure 2 is a simplified exploded perspective view. The main body, the inlet grill and the exhaust grill, which constitute the exterior of the system, are located at the front and the rear of the main body, respectively, and the prefilter 3 is installed to block large particles primarily, and a dust collecting filter is used to block fine particles. Attached. In addition, there is a photocatalyst unit 5 capable of removing organic compounds, general bacteria, and fungi by photoreaction, and an ultraviolet lamp 6 is installed therein. In addition, there is a deodorization filter (7) formed in the form of honeycomb low temperature deodorization catalyst to have an excellent removal ability of odorous substances by simple adsorption and catalytic reaction, and finally a blower is attached to the inlet and discharge of contaminated air. Therefore, compared with the deodorization filter of the air purifier used in the prior art has a long life and excellent performance, it shows a high air purification efficiency by enabling the sterilization action by the photocatalyst.
도 3 내지 도 4D는 본 발명에 의한 공기 정화시스템에 설치된 광촉매 반응기와 광반응기 내부에 설치된 나선형 금속 플레이트에 의한 공기 유로 및 광촉매 담치체의 예를 나타내는 개략 사시도이다. 집진 필터에 의해 미세한 입자가 제거된 오염된 공기는 광반응기 내부로 유입되며, 이때 유입된 공기는 광반응기 내부에 TiO2가 코팅되고 나선형으로 장착된 금속 플레이트(14)에 의해 일정한 유로가 형성되며 오염된 공기에 포함된 유기화합물이나 세균은 나선형 유로를 따라 광촉매에 의해 제거된다. 광촉매 반응의 효율을 높이기 위하여 반사체를 반응기 내벽에 설치할 뿐만 아니라 금속 플레이트 표면에 도 4B 내지 도 4D에서 나타낸 바와 같이 광촉매가 코팅된 유리구슬(18)과 금속 매쉬(19), 광 섬유(20)를 부착하였다.3 to 4D are schematic perspective views showing an example of an air flow path and a photocatalyst carrier having a photocatalytic reactor installed in an air purification system according to the present invention and a spiral metal plate provided inside the photoreactor. The contaminated air from which fine particles are removed by the dust collecting filter is introduced into the photoreactor, and the introduced air is formed with a constant flow path by a metal plate 14 coated with a TiO 2 and spirally mounted inside the photoreactor. Organic compounds or bacteria contained in the contaminated air are removed by the photocatalyst along the spiral flow path. In order to increase the efficiency of the photocatalytic reaction, not only the reflector is installed on the inner wall of the reactor, but also the glass beads 18, the metal mesh 19, and the optical fiber 20 coated with the photocatalyst on the metal plate surface as shown in FIGS. 4B to 4D. Attached.
도 5는 탈취필터의 간략한 사시도이며 상기에서 설명한 바와 같이 저온탈취촉매를 하니컴 형태로 성형한 것으로. 탈취필터는 기본적인 프레임(16)과 프레임 외부에 코팅된 저온 탈취 촉매층(17), 그리고 탈취 필터에 흡착한 악취물질을 완전 제거하고자 할 경우 열을 공급해주는 열선 등으로 이루어져 있다.Figure 5 is a simplified perspective view of the deodorizing filter and as described above is a low temperature deodorizing catalyst molded in the form of honeycomb. The deodorization filter is composed of a basic frame 16, a low temperature deodorization catalyst layer 17 coated on the outside of the frame, and a heating wire for supplying heat when completely removing odorous substances adsorbed on the deodorization filter.
<실시예 1 - 6 > 공기 청정 시스템에서 저온 탈취촉매 필터의 악취 제거율<Example 1-6> Odor removal rate of the low temperature deodorization catalyst filter in an air cleaning system
실시예 1 - 6의 악취의 제거 실험 방법은 악취 가스 200 ppm을 포함하는 공기의 공간 속도가 40,000/h가 되도록 연속으로 주입하여 나오는 공기중의 악취를 가스크로마토그래프로 분석한다. 반응 전후의 악취 농도를 비교하여 저온 탈취촉매 하니컴 필터의 제거율을 다음식과 같이 구하였다.The odor removal experiment method of Examples 1-6 analyzes the odor in the air which is continuously injected so that the space velocity of air containing 200 ppm of odor gas may be 40,000 / h, with a gas chromatography. By comparing the odor concentration before and after the reaction, the removal rate of the low temperature deodorization catalyst honeycomb filter was calculated as follows.
제거율(%) = {(반응기 전의 농도 - 반응기 후의 농도)/반응기 전의 농도} x100.% Removal rate = {(concentration before reactor minus concentration after reactor) / concentration before reactor} x100.
실시예 1 - 6의 탈취촉매 필터의 제조는 금속 중량(촉매에서 괄호안의 숫자는 금속의 중량%를 나타냄)을 변화시켜 공함침법으로 제조된 탈취촉매를 120℃에서 12시간 동안 건조기에서 건조된 후, 400℃에서 3시간 동안 공기 흐름 하에서 소성하였고, 유·무기 바인더를 사용하여 진공 성형 압출기로 성형하여 제조하였다.Preparation of the deodorizing catalyst filter of Examples 1 to 6 was carried out by varying the metal weight (the numbers in parentheses in the catalyst indicate the weight percentage of the metal) so that the deodorizing catalyst prepared by the co-impregnation method was dried in a dryer at 120 ° C. for 12 hours. It was calcined under air flow at 400 ° C. for 3 hours, and prepared by molding with a vacuum molding extruder using an organic / inorganic binder.
트리메틸아민의 제거율을 표 1에 나타냈다. 즉 여러 담지체에 은 1 중량%, Cu 2 중량% 및 Mn 5 중량%를 포함한 Ag(1)-Cu(2)-Mn(5) 촉매필터의 담지체의 영향을 알아본 것이다. 제올라이트(ZSM-5) 담지체를 사용했을 경우, 트리메틸아민 제거율이 아주 우수하며, 100℃와 175℃의 온도에서 80% 이상의 제거율을 보였다. TiO2나 Al2O3담지체를 사용한 경우도 트리메틸아민 제거율이 상당히 높다. SiO2담지체를 사용한 Ag(1)-Cu(2)-Mn(5) 촉매는 트리메틸아민 제거율이 별로 높지 않은 것을 볼 수 있다.The removal rate of trimethylamine is shown in Table 1. In other words, the influence of the support of the Ag (1) -Cu (2) -Mn (5) catalyst filter including 1% by weight of silver, 2% by weight of Cu and 5% by weight of Mn in various carriers. When the zeolite (ZSM-5) carrier was used, the trimethylamine removal rate was very good, and the removal rate was 80% or more at temperatures of 100 ° C and 175 ° C. Even when TiO 2 or Al 2 O 3 carriers are used, the trimethylamine removal rate is quite high. It can be seen that the Ag (1) -Cu (2) -Mn (5) catalyst using the SiO 2 carrier is not very high in trimethylamine removal.
같은 실험 방법으로 5℃에서 메틸메르캅탄 제거율로 비교하였다. 표 2는 그 결과를 보여준다The same experimental method was used to compare methyl mercaptan removal rate at 5 ° C. Table 2 shows the results
<실시예 7 ~ 9> TiO2/SiO2함량 비에 따른 광촉매 반응에 의한 아세트 알데히드 및 곰팡이 균 제거 실험.<Examples 7 to 9> Removal of acetaldehyde and fungi by the photocatalytic reaction according to the TiO 2 / SiO 2 content ratio.
증류수 1000 ㎖에 티타늄 이소프로폭사이드를 150 ㎖를 넣고 여기에 60 wt% 질산을 0.1 M로 첨가하고 50℃에서 24시간 교반한다. 이렇게 제조된 산화티탄 졸에 28wt% NH4OH 수용액을 첨가하여 pH를 7이 되게 한 후 얻어진 슬러리를 여과하고 슬러리의 저항이 10 ㏁이 될 때까지 증류수로 세척한다. 세척한 후 얻어진 산화티탄겔을 취하여 증류슈 1000㎖와 혼합한 후 30 wt% 과산화수소를 400㎖를 취하여 혼합한 후 95℃에서 20시간 반응시키면 연노란색의 반투명 산화티탄 졸이 된다. 이를 35℃에서 감압증류하여 10wt%의 산화티탄 졸을 얻었으며 여기에 5 wt%인 SiO2졸용액을 각각 100 ml(실시예 7), 300 ml(실시예 8), 500 ml(실시예 9) 첨가하여 혼합액을 제조하였다.150 ml of titanium isopropoxide was added to 1000 ml of distilled water, and 60 wt% nitric acid was added thereto at 0.1 M and stirred at 50 ° C for 24 hours. 28 wt% NH 4 OH aqueous solution was added to the prepared titanium oxide sol so that the pH was 7, and the obtained slurry was filtered and washed with distilled water until the slurry had a resistance of 10 kPa. After washing, the obtained titanium oxide gel was mixed with 1000 ml of distilled water, 400 ml of 30 wt% hydrogen peroxide was mixed and reacted at 95 ° C. for 20 hours to give a pale yellow translucent titanium oxide sol. This was distilled under reduced pressure at 35 ° C. to obtain 10 wt% of titanium oxide sol, and 100 ml (Example 7), 300 ml (Example 8), and 500 ml (Example 9) of 5 wt% SiO 2 sol solution, respectively. ) Was added to prepare a mixed solution.
<실시예 10><Example 10>
상기 실시예 8에 의한 제조 공정상에서 증류수 1000 ml와 티타늄 이소프로폭사이드 150 ml을 혼합할 때에 Fe(NO3)3·9H2O의 5 g을 함께 혼합하는 공정을 제외하고, 모든 제조 공정은 상기 실시예 8과 같다.Except for mixing 1000 g of distilled water and 150 ml of titanium isopropoxide in the manufacturing process according to Example 8, all manufacturing processes except for mixing 5 g of Fe (NO 3 ) 3 .9H 2 O together Same as Example 8 above.
위의 실시예 7 ∼ 10에 의해 제조된 바인더가 포함된 졸 용액에 나선형 스테인레스 스틸 플레이트를 딥(dip) 코팅하였다. 이때 인장속도는 10 cm/min, 코팅횟수는 1회였으며, 450 ℃에서 1시간 동안 소성한 후에 아세트알데히드 분해실험과 곰팡이균 제거실험을 실시하였다. 아세트알데히드 제거 실험방법은 상기에서 논한 악취 제거 실험 방법과 동일하며 이에 대한 결과를 표 3에 나타내었다. 또한 곰팡이균 제거실험은 광촉매 반응기 내부에 있는 광촉매가 코팅된 스테인레스 표면에 곰팡이균을 영양 배지액과 함께 2 ml을 이식하여 실험하였다. 곰팡이 균의 초기 농도는 2.5 × 105CFU/ml이었다. 이에 대한 결과를 표 4에 나타내었다.A spiral stainless steel plate was dip coated on the sol solution containing the binder prepared by Examples 7 to 10 above. At this time, the tensile speed was 10 cm / min, the number of coating was once, and after firing at 450 ℃ for 1 hour, the acetaldehyde decomposition test and the fungus removal test was carried out. Acetaldehyde removal test method is the same as the odor removal test method discussed above and the results are shown in Table 3. In addition, the fungus removal experiment was carried out by transplanting 2 ml of the fungus bacteria along with the nutrient medium on the photocatalyst-coated stainless surface inside the photocatalytic reactor. The initial concentration of the fungus was 2.5 × 10 5 CFU / ml. The results are shown in Table 4.
표 3의 결과에 나타난 바와같이, 실시예 7의 결과를 살펴보면 SiO2의 함량이낮을 경우 광촉매의 탈리 현상이 나타남을 알 수 있으며 결과적으로 이러한 TiO2의 탈리 현상을 억제하기 위해서는 적당한 SiO2의 양을 첨가해야한다.As shown in the results of Table 3, looking at the results of Example 7, it can be seen that when the content of SiO 2 is low, the photocatalytic desorption phenomenon appears, and as a result, in order to suppress the desorption of TiO 2 , an appropriate amount of SiO 2 Should be added.
표 4의 결과에서도 나타나듯이 수 분내에 모든 곰팡이 균을 제거함으로써 세균에 대한 광촉매의 높은 효과를 기대할 수 있다.As shown in the results of Table 4, the high effect of the photocatalyst on the bacteria can be expected by removing all the fungal bacteria in a few minutes.
이상에서와 같이 본 발명에 따른 광촉매와 저온 탈취촉매가 결합된 공기정화 시스템의 효과를 설명하면 다음과 같다.As described above, the effects of the air purification system combined with the photocatalyst and the low temperature deodorization catalyst according to the present invention are as follows.
우선 광촉매를 사용하여 기존에 공기청정기에 비하여 살균기능이 강화되어 일반 세균이나 곰팡이 균의 완전 제거를 완벽하게 하며, 휘발성 유기화합물의 완전 산화분해가 가능하다는 것이다. 또한, 기존의 탈취필터로 사용하는 원료인 활성탄이라는 고정틀에서 벗어나 저온 탈취 촉매를 사용함으로써 활성탄과 비하여 메틸메르갑탄이나 황화수소, 트리메틸아민 등과 같은 악취 물질을 제거하는 데 우수한 성능을 가지고 있으며 활성탄과 같이 빈번한 탈취필터의 교체를 필요로하지 않는 긴 수명을 갖는다.First of all, the photocatalyst is used to enhance the sterilization function compared to the existing air purifiers, so that the complete removal of general bacteria and fungi is possible, and oxidative decomposition of volatile organic compounds is possible. In addition, by using a low temperature deodorization catalyst from the fixed frame called activated carbon, which is a raw material used as a conventional deodorization filter, it has excellent performance in removing odorous substances such as methyl meraptan, hydrogen sulfide, and trimethylamine, compared to activated carbon. It has a long life that does not require replacement of the deodorizing filter.
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