JPH0459011A - Method and device for treating gas - Google Patents
Method and device for treating gasInfo
- Publication number
- JPH0459011A JPH0459011A JP2162151A JP16215190A JPH0459011A JP H0459011 A JPH0459011 A JP H0459011A JP 2162151 A JP2162151 A JP 2162151A JP 16215190 A JP16215190 A JP 16215190A JP H0459011 A JPH0459011 A JP H0459011A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- activated carbon
- carbon honeycomb
- honeycomb
- drug
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 120
- 239000000428 dust Substances 0.000 claims abstract description 16
- 239000000126 substance Substances 0.000 claims abstract description 11
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052794 bromium Inorganic materials 0.000 claims abstract description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 13
- 238000003672 processing method Methods 0.000 claims description 7
- 150000007522 mineralic acids Chemical group 0.000 claims description 3
- 150000007524 organic acids Chemical class 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 239000003814 drug Substances 0.000 claims 3
- 229940079593 drug Drugs 0.000 claims 3
- 125000001246 bromo group Chemical group Br* 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 229910052709 silver Inorganic materials 0.000 claims 1
- 229910052719 titanium Inorganic materials 0.000 claims 1
- 229910052720 vanadium Inorganic materials 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 64
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 15
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 abstract description 7
- 239000002253 acid Substances 0.000 abstract description 6
- 229910000037 hydrogen sulfide Inorganic materials 0.000 abstract description 5
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 abstract description 4
- 150000001299 aldehydes Chemical class 0.000 abstract description 4
- 229930195735 unsaturated hydrocarbon Natural products 0.000 abstract description 4
- 229930195733 hydrocarbon Natural products 0.000 abstract description 2
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 2
- 239000003921 oil Substances 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 241000264877 Hippospongia communis Species 0.000 description 38
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 239000007864 aqueous solution Substances 0.000 description 7
- 238000009423 ventilation Methods 0.000 description 6
- 229910002090 carbon oxide Inorganic materials 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 235000012055 fruits and vegetables Nutrition 0.000 description 4
- 238000004817 gas chromatography Methods 0.000 description 4
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 3
- 230000009965 odorless effect Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 238000004887 air purification Methods 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 230000001877 deodorizing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 150000002736 metal compounds Chemical class 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910017464 nitrogen compound Inorganic materials 0.000 description 2
- 150000002830 nitrogen compounds Chemical class 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 150000003464 sulfur compounds Chemical class 0.000 description 2
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 1
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical class [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- DRHKJLXJIQTDTD-OAHLLOKOSA-N Tamsulosine Chemical compound CCOC1=CC=CC=C1OCCN[C@H](C)CC1=CC=C(OC)C(S(N)(=O)=O)=C1 DRHKJLXJIQTDTD-OAHLLOKOSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 150000002019 disulfides Chemical class 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 235000012907 honey Nutrition 0.000 description 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 229910000043 hydrogen iodide Inorganic materials 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229960002715 nicotine Drugs 0.000 description 1
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- AHAQCSJJKQQPOC-UHFFFAOYSA-N nitric acid hydrofluoride Chemical compound [N+](=O)(O)[O-].F.[N+](=O)(O)[O-] AHAQCSJJKQQPOC-UHFFFAOYSA-N 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/04—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Treating Waste Gases (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は脱臭、空気浄化７青果物の鮮度保持なとのため
のガスの処理法およびそのためのガスの処理装置に関す
るものである。さらに詳しくは、冷蔵庫、冷蔵室、コン
テナ、ショウケース、自動車、病院、老人ホーム、会議
室、事務所、家庭。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a gas processing method for deodorizing, air purification, preserving the freshness of fruits and vegetables, and a gas processing apparatus therefor. More specifically, refrigerators, cold rooms, containers, showcases, automobiles, hospitals, nursing homes, conference rooms, offices, and homes.
ホテル、飲食店、地下駐車場、地下室なとの脱臭空気浄
化および青果物の鮮度保持なとを行うためのガスの処理
法およびガスの処理装置に関するものである。The present invention relates to a gas processing method and a gas processing device for deodorizing air purification in hotels, restaurants, underground parking lots, basements, and maintaining the freshness of fruits and vegetables.
［従来技術およびその問題点〕
従来より、脱臭、空気浄化、青果物の鮮度保持などを行
うために１粒状活性炭の充填層に被処理ガスを流通する
ガスの処理法および装置か知られている。そしてこの脱
臭、空気浄化、青果物の鮮度保持などを行うための対象
（被処理）ガスには硫化水素、メルカプタン類、スルフ
イツト類などのイオウ化合物、アンモニア、アミン類な
との窒素化合物、アセチレン、エチレンなとの不飽和炭
化水素類、窒素酸化物、−酸化炭素、シアン化水素なと
の被酸化性ガス、その他アルデヒ１４類、カルボン酸類
なとか含まれる。これらの臭気成分。[Prior Art and its Problems] Conventionally, gas processing methods and devices have been known in which a gas to be treated is passed through a packed bed of granular activated carbon in order to deodorize, purify the air, maintain the freshness of fruits and vegetables, and the like. The target gases used to deodorize, purify the air, maintain the freshness of fruits and vegetables, etc. include hydrogen sulfide, sulfur compounds such as mercaptans and sulfites, nitrogen compounds such as ammonia and amines, acetylene, and ethylene. These include unsaturated hydrocarbons, nitrogen oxides, carbon oxides, hydrogen cyanide, and other oxidizable gases, as well as 14 aldehydes and carboxylic acids. These odor components.
環境汚染成分は、通常大気中に極低濃度で存在し、活性
炭単独では単なる物理吸着であり、除去速度および除去
容量が非常に小さく、そのため大量の活性炭が必要であ
り、また通気抵抗か大きいため、通気のための電気代か
かさみ、さらに劣化した粒状活性炭の交換も厄介である
。Environmental pollutants usually exist in the atmosphere at extremely low concentrations, and activated carbon alone can only physically adsorb them, resulting in very low removal rate and removal capacity, which requires a large amount of activated carbon, and also because of high ventilation resistance. In addition to increasing electricity costs for ventilation, it is also troublesome to replace deteriorated granular activated carbon.
［発明か解決しようとする課題］
本発明は前記問題点を解決するもので、特に通気抵抗が
少ない簡便な手段で、ガス中の微量成分を効率よく除去
しようとするものである。[Problems to be Solved by the Invention] The present invention is intended to solve the above-mentioned problems, and particularly aims to efficiently remove trace components in gas by a simple means with low ventilation resistance.
［課題を解決するための手段］
すなわち、本発明は
■）被処理ガスを除塵フィルター、活性炭ハニカム、薬
品担持活性炭ハニカムの順に接触さ七ることを特徴とす
るガスの処理法、および
２）被処理ガスの導入部からガス排出部に至るガス流路
内に除塵フィルター、活性炭ハニカムおよび薬品担持活
性炭ハニカムをこの順に配置したことを特徴とするガス
の処理装置、
である。[Means for Solving the Problems] That is, the present invention provides: 1) a gas treatment method characterized in that a gas to be treated is brought into contact with a dust removal filter, an activated carbon honeycomb, and a drug-supported activated carbon honeycomb in this order; A gas processing device characterized in that a dust removal filter, an activated carbon honeycomb, and a drug-supporting activated carbon honeycomb are arranged in this order in a gas flow path from a processing gas introduction section to a gas discharge section.
本発明のガスの処理法においては、被処理ガスは除塵フ
ィルター、活性炭ハニカム、薬品担持活性炭ハニツノム
の順に接触させることによって行われる。In the gas treatment method of the present invention, the gas to be treated is brought into contact with a dust removal filter, an activated carbon honeycomb, and a drug-supported activated carbon honeycomb in this order.
上記除塵フィルターは除塵のため用いられている市販の
フィルターでよく、特に限定されないが、本発明の特性
からして、ガスの流れか均一なものが好ましい。除塵フ
ィルターとしては帯電フィルターを用いるのか好ましい
。帯電フィルターとしては、通気抵抗か許される範囲で
厚くかつ均一なものか望まれる。この除塵フィルターに
よりガス中の塵埃なと微粒固形物を除くことかできる。The above-mentioned dust removal filter may be a commercially available filter used for dust removal, and is not particularly limited, but in view of the characteristics of the present invention, it is preferable that the filter has a uniform flow of gas. It is preferable to use a charged filter as the dust removal filter. As a charged filter, it is desirable that it be as thick and uniform as possible in terms of ventilation resistance. This dust filter can remove dust and fine solid matter from the gas.
例えば、タバコの煙にコチン、タール、−酸化炭素、シ
アン化水素などを含有する）を処理する場合に、帯電フ
ィルターを用いると塵埃の化ニコチン、タール類を有効
に除去することができる。For example, when treating tobacco smoke (containing cotine, tar, carbon oxide, hydrogen cyanide, etc.), using a charged filter can effectively remove nicotine dust and tar.
本発明で用いられる活性炭ハニカムは、活性炭含量か約
３０重量％以上のもので、種々の結合剤を含有していて
もよく、その比表面積は通常２００ｍ２／９．好ましく
は４００ｍ２７ｇ以」−１特に好ましくは５００ｍ２／
ｇ以上である。またそのセル数は３０−１５００個／】
ｎ２、好ましくは５０〜１０００個／１ｎ２で、その厚
みは５ｍｍ以上のものが好ましい。この活性炭ハニカム
により、ガス中の、油類、炭化水素類、硫化水素、窒素
酸化物。The activated carbon honeycomb used in the present invention has an activated carbon content of about 30% by weight or more, may contain various binders, and has a specific surface area of usually 200 m2/9. Preferably 400m27g or more”-1 Particularly preferably 500m2/
g or more. Also, the number of cells is 30-1500/]
n2, preferably 50 to 1000 pieces/1n2, and the thickness is preferably 5 mm or more. This activated carbon honeycomb removes oils, hydrocarbons, hydrogen sulfide, and nitrogen oxides from gas.
イオウ酸化物、メルカプタン、ジスルフィッド類など、
物理吸着によって活性炭に吸着されるものを除去するこ
とかできる。Sulfur oxides, mercaptans, disulfides, etc.
What is adsorbed on activated carbon can be removed by physical adsorption.
本発明において用いられる薬品担持活性炭ノ＼ニカムに
担持さぜる薬品は被処理ガス中に含まれるガスの種類に
よって適宜選択するのがよい。The chemical to be supported on the chemical-supported activated carbon/nicum used in the present invention is preferably selected depending on the type of gas contained in the gas to be treated.
被処理ガスかアンモニア、アミン類などの塩基性物質を
含有する場合は、担持薬品として無機酸および／または
有機酸を用い、被処理ガスかエチレン、アセチレンなと
の低級不飽和炭化水素類を含有する場合は、担持薬品と
して臭素を用いるのがよい。また、被処理ガスか窒素酸
化物、−酸化炭素、シアン化水素、低級アルデヒド類な
とを含有する場合は、担持薬品として白金族元素の化合
物を用いるのが好ましい。If the gas to be treated contains basic substances such as ammonia or amines, use an inorganic acid and/or organic acid as a supporting chemical, and the gas to be treated may contain lower unsaturated hydrocarbons such as ethylene or acetylene. In this case, it is preferable to use bromine as a supporting chemical. Furthermore, when the gas to be treated contains nitrogen oxides, -carbon oxides, hydrogen cyanide, lower aldehydes, etc., it is preferable to use a compound of a platinum group element as the supporting chemical.
本発明において、無機酸としてはリン酸、硫酸などが挙
げられ、有機酸としては、シュウ酸、クエン酸、リンゴ
酸などか挙げられる。In the present invention, examples of inorganic acids include phosphoric acid and sulfuric acid, and examples of organic acids include oxalic acid, citric acid, and malic acid.
これらの酸は、水溶液の形で、前記の活性炭ハカムに散
布、含浸または浸漬することによって担持してもよく、
また活性炭ハニカムを製造する際に、酸水溶液の形て、
原料として練合して成型することもてきる。必要に応し
て乾燥してもよい。These acids may be supported in the form of an aqueous solution by spraying, impregnating or immersing the activated carbon in the form of an aqueous solution.
In addition, when manufacturing activated carbon honeycomb, in the form of an acid aqueous solution,
It can also be kneaded as a raw material and molded. It may be dried if necessary.
活性炭ハニカムに対する酸担持量は１〜６０重量％、好
ましくは２〜５０重量％、特に好ましくは５〜４０重量
％である。The amount of acid supported on the activated carbon honeycomb is 1 to 60% by weight, preferably 2 to 50% by weight, particularly preferably 5 to 40% by weight.
本発明において臭素担持活性炭ハニカムは活性炭ハニノ
ノムに液体状の臭素を散布、含浸、浸漬するか気体状の
臭素を活性炭ハニカムに接触させることによって得られ
る。活性炭ハニカムに対する臭素の担持量は１〜３０重
量％、好ましくは２〜２０重量％、特に好ましくは５〜
１５重量％である。本発明において白金族元素としては
例えは白金 イリジウム、オスミウム、パラジウム、ロ
ジウム、ルテニウム、金が挙げられ、これら白金族元素
化合物の活性炭ハニカムに対する担持量（Ｊ白金族元素
としてＯ，１〜２０重量％、好ましくは０．２５〜１５
重量％、特に好ましくは０．５〜１０重量％である。In the present invention, the bromine-supported activated carbon honeycomb can be obtained by spraying, impregnating or immersing activated carbon honeycomb with liquid bromine, or by bringing gaseous bromine into contact with the activated carbon honeycomb. The amount of bromine supported on the activated carbon honeycomb is 1 to 30% by weight, preferably 2 to 20% by weight, particularly preferably 5 to 30% by weight.
It is 15% by weight. In the present invention, platinum group elements include, for example, platinum, iridium, osmium, palladium, rhodium, ruthenium, and gold. , preferably 0.25-15
% by weight, particularly preferably from 0.5 to 10% by weight.
白金族元素化合物担持活性炭ハニー）ツムは、活性炭ハ
ニカムに白金族元素化合物の塩酸、ヨウ化水素、臭化水
素、フッ酸２硝酸、硫酸なとの水溶液を散布、含浸、浸
漬することによって得られ、また、活性炭ハニカムを製
造する際に、これらの白金族元素化合物の酸水溶液の形
で原料と練合して成型することによっても得られる。必
要に応じて乾燥または焼成してもよい。その際の温度は
４０〜５００’Ｃ，好ましくは５０〜４００ ’Ｏ１特
に好ましくは６０〜３５０”Ｃであり、その際の雰囲気
は減圧下、常圧下、加圧下のいずれでもよく、空気、窒
素、炭酸ガス、燃焼ガスなとの存在下で行うことかでき
る。担持薬品として、白金族元素の化合物とさらにＴｉ
、 Ｖ、針、 Ｍｎ、Ｆｅ、 Ｃｏ、 Ｎｉ、 ＣｕＡ
ｇの化合物のうち少なくとも１種以上とを同時に用いる
ことによって、ガスの処理効果か一層向上する。この場
合も白金族元素化合物単独を担持した薬品担持活性炭ハ
ニカムと全く同じ方法で製造することができる。この場
合、白金族元素化合物に対するこれら金属化合物の添加
比率（金属／元素重量比率）は０．１〜５００、好まし
くは０゜５〜２５０、より好ましくは１〜１００である
。Activated carbon honey containing platinum group element compounds is obtained by spraying, impregnating, and immersing activated carbon honeycombs in an aqueous solution of platinum group element compounds such as hydrochloric acid, hydrogen iodide, hydrogen bromide, hydrofluoric acid dinitric acid, and sulfuric acid. In addition, when producing an activated carbon honeycomb, these platinum group element compounds can also be obtained by kneading them with raw materials in the form of an acid aqueous solution and molding them. It may be dried or fired if necessary. The temperature at that time is 40 to 500'C, preferably 50 to 400'O1, particularly preferably 60 to 350'C, and the atmosphere at that time may be under reduced pressure, normal pressure, or pressurized air, nitrogen, , carbon dioxide gas, combustion gas, etc.As supporting chemicals, compounds of platinum group elements and Ti
, V, needle, Mn, Fe, Co, Ni, CuA
By simultaneously using at least one of the compounds in g, the gas treatment effect can be further improved. In this case as well, it can be produced in exactly the same manner as the chemical-supported activated carbon honeycomb that supports only a platinum group element compound. In this case, the addition ratio of these metal compounds to the platinum group element compound (metal/element weight ratio) is from 0.1 to 500, preferably from 0.5 to 250, more preferably from 1 to 100.
また必要に応して乾燥または焼成する。その場合の温度
は４０〜５００°Ｃ１好ましくは５０〜４００’Ｃ，特
に好ましくは６０〜３５０°Ｃであり、その際の雰囲気
は減圧下、常圧下、加圧下のいずれでもよく、空気、窒
素、炭酸ガス、燃焼ガスなとの存在下で行うことかでき
る。タバコの煙を処理しようとする場合は、白金族元素
化合物単独またはこれと上記金属化合物の双方を担持し
た活性炭ハニカムを用いることにより、−酸化炭素、シ
アン化水素全除去することができる。It is also dried or fired if necessary. The temperature in that case is 40 to 500°C, preferably 50 to 400'C, particularly preferably 60 to 350°C, and the atmosphere at that time may be under reduced pressure, normal pressure, or pressurized, such as air or nitrogen. It can be carried out in the presence of carbon dioxide, carbon dioxide, combustion gas, etc. When cigarette smoke is to be treated, carbon oxide and hydrogen cyanide can be completely removed by using an activated carbon honeycomb carrying a platinum group element compound alone or both the platinum group element compound and the above-mentioned metal compound.
本発明において、被処理ガスの温度は、−５０〜１００
°Ｃ２好ましくは一３０〜８０°Ｃ１特に好ましくは一
２０〜６５°Ｃである。被処理ガスを活性炭ハニカムお
よび薬品担持活性炭ハニカムに接触させる場合、ガスの
線流速は１〜２００ｃｍ／ｓｅｃ、好ましくは２−１５
０ ｃｍ／ｓ ｅ ｃ、特に好ましくは５〜ｌｏＯｃｍ
／ｓｅｃであり、空間速度は２０−５００．０００ｈ
ｒ−’、好ましくは５０−２５０，０００ｈｒ−’、特
に好ましくは１００−１５０．０００１〕ｒ−’である
。In the present invention, the temperature of the gas to be treated is -50 to 100
°C2 is preferably -30 to 80 °C1, particularly preferably -20 to 65 °C. When the gas to be treated is brought into contact with the activated carbon honeycomb and the drug-supported activated carbon honeycomb, the linear flow velocity of the gas is 1 to 200 cm/sec, preferably 2 to 15 cm/sec.
0 cm/sec, particularly preferably 5 to loOcm
/sec, and the space velocity is 20-500.000h
r-', preferably 50-250,000 hr-', particularly preferably 100-150.0001]r-'.
本発明のガスの処理装置は、上記の除塵フィルター、活
性炭ハニカム、薬品担持活性炭ハニツノムをこの順に配
置したものであるが、被処理ガスを流通するために通常
ファンが設けられている。ファンの設置位置は除塵フィ
ルター、活性炭／Ｘニカムおよび薬品担持活性炭ハニカ
ムの前後またはこれらの間のいずれでもよいか、ファン
の汚れを防ぐためには薬品担持活性炭ハニカムの後に配
置するのが好ましい。The gas processing device of the present invention has the above-described dust filter, activated carbon honeycomb, and drug-supported activated carbon honeycomb arranged in this order, and is usually provided with a fan to circulate the gas to be treated. The fan may be installed before or after the dust filter, the activated carbon/X nicomb, and the drug-supported activated carbon honeycomb, or it is preferably placed after the drug-supported activated carbon honeycomb in order to prevent the fan from becoming dirty.
第１図は本発明のガスの処理方法を実施する装置の一実
施例を示す構成説明図である。ガスの処理装置ＩＡはガ
ス導入部２から排出部７に至るガス流路内に帯電フィル
ター３．活性炭ハニカム４薬品担持活性炭ハニカム５お
よびファン６かこの順にイ′Ｊ設されている。FIG. 1 is a configuration explanatory diagram showing one embodiment of an apparatus for implementing the gas processing method of the present invention. The gas processing device IA includes a charged filter 3. An activated carbon honeycomb 4, a drug-supporting activated carbon honeycomb 5, and a fan 6 are installed in this order.
ファンを駆動するには電池を用いるのか簡便である。ま
たファンの駆動および停止はタイマーまたはセンサーと
関連させてもよい。It is convenient to use batteries to drive the fan. Also, the activation and stopping of the fan may be associated with a timer or sensor.
［実施例］
以下に実施例を記載して本発明をより具体的に説明する
。[Example] The present invention will be described in more detail with reference to Examples below.
実施例１
第１図のガスの処理装置ＩＡを用い、これを第２図に示
すような空間８（内容積２７０Ｑの容器）内にセラ［・
シた。Example 1 Using the gas processing apparatus IA shown in FIG. 1, a cellar [.
Shita.
ガスの処理装置１Ａに帯電フィルターとして住友スリー
エム（株）製Ｇ−１１０の７６ｍｍ１のもの１枚、活性
炭ハニカムとしてＢＥＴ被表面積８００ ｍ２／ｇ、セ
ル数３００個／】ｏ２、厚さ１５ｍｍのもの１枚、薬品
担持活性炭ハニカムとして前記の活性炭ハニカムにリン
酸を２５重量％担持したもの１枚、ファンとしてミネベ
ア（株）製のＦｌｏｗｍａｘ ３１１０ＰＳを使用した
。The gas treatment device 1A was equipped with one charged filter made by Sumitomo 3M Ltd. G-110 of 76 mm1, and an activated carbon honeycomb with a BET surface area of 800 m2/g, number of cells 300 cells/]O2, and a thickness of 15 mm. One sheet of the above-described activated carbon honeycomb with 25% by weight of phosphoric acid was used as the drug-supported activated carbon honeycomb, and Flowmax 3110PS manufactured by Minebea Co., Ltd. was used as the fan.
また、空間内の中心に強制撹拌用のファンを設置して以
下のテストを実施した。In addition, we installed a fan for forced stirring in the center of the space and conducted the following tests.
まず、空間にＨ２Ｓ、ＣＨ３ＳＨ，ＮＨ３および（ＣＨ
３）３Ｎをそれぞれ含有する標準ガスを所定量注入し、
空間内を５分間強制撹拌した後、空間内の中心部のガス
をサンプリングして、ガスクロ分析した。各成分の濃度
はＩ−１２５が１５０ ｐ ｌ） １）ＣＨ３ＳＨが８
０ｐｐｂ、ＮＨ３かｌ ５００ ｐ ｐ ｂ。First, H2S, CH3SH, NH3 and (CH
3) Inject a predetermined amount of standard gas containing 3N,
After the space was forcibly stirred for 5 minutes, the gas in the center of the space was sampled and subjected to gas chromatography analysis. The concentration of each component is 150 pl for I-125) 1) 8 for CH3SH
0 ppb, NH3 or l 500 p p b.
（ＣＨ＋）３Ｎが５０ ｐ ｐ ｂであった。この状態
で空間内のガスの処理装置ＩＡの運転を開始した（ファ
ンの実風量４ Ｏｆｆ ／分）。５時間後に空間内のガ
スを分析した。Ｈ２Ｓ、ＣＨ３ＳＨおよび（ＣＨ３）３
Ｎの濃度はいずれも０．１ｐｐｂ以下、ＮＨ３の濃度は
］ ＯＯｐ ｐ １．１１以下であり、ガスは無臭であ
った。(CH+)3N was 50 p p b. In this state, the operation of the gas processing device IA in the space was started (actual air flow rate of the fan: 4 Off /min). The gas in the space was analyzed after 5 hours. H2S, CH3SH and (CH3)3
The concentration of N was 0.1 ppb or less in all cases, the concentration of NH3 was 1.11 or less, and the gas was odorless.
実施例２
実施例１と同様に実験した。ただし、薬品担持活性炭ハ
ニカムとしては、ＢＥＴ表面積８００ｍ２／ｇ、セル数
３００個／ｉｎ２．厚さ１５ｍｍの活性炭ハニカムにＰ
ｄ（ｊ１２の５重量％ＨＮ○３水溶液を均一に散布し、
１４０°Ｃて空気中で処理したもの１枚（Ｐｄとしての
含量２０ ｍｇ／ｇ−ハニカム）を用いた。また、空間
にＣＯの標準ガスを所定量注入し、空間内を５分間強制
撹拌した後、空間内の中心部のガスをリーンプリングし
てガスクロ分析した。ＣＯの濃度は２５０ｐｐｍであっ
た。この状態で空間内のガスの処理装置ＩＡの運転を開
始した（ファンの実風量４００．７分）。ｃｏ濃度は３
０分後６８ｐｐｍ、１時間後２１ｐｐｍ、２時間後３ｐ
ｐｍであった。Example 2 An experiment was conducted in the same manner as in Example 1. However, as a drug-supported activated carbon honeycomb, the BET surface area is 800 m2/g, the number of cells is 300 cells/in2. P on activated carbon honeycomb with a thickness of 15 mm
d (Spread 5 wt% HN○3 aqueous solution of j12 uniformly,
One honeycomb treated in air at 140°C (Pd content 20 mg/g) was used. Further, a predetermined amount of a standard gas of CO was injected into the space, and after the space was forcibly stirred for 5 minutes, the gas in the center of the space was subjected to lean pulling and gas chromatography analysis. The concentration of CO was 250 ppm. In this state, the operation of the gas processing device IA in the space was started (actual air flow rate of the fan: 400.7 minutes). The co concentration is 3
68ppm after 0 minutes, 21ppm after 1 hour, 3p after 2 hours
It was pm.
実施例３
実施例１と同様に実験した。たたし、薬品担持活性炭ハ
ニカムとしてはＢＥＴ比表面積８００ｍ２／ｇ、セル数
３００個／】ｎ２、厚さ１５ｍｍの活性炭ハニカムにＰ
ｄ （ＮＯ３） ２−Ｃｕ ＳＯ，の５重量％ＨＮＯ３
−５６重量％Ｈ２Ｓｏ、水溶液を均に散布し、１００°
Ｃで空気中で処理したもの１枚（Ｐｄとしての含量２０
ｍｇ／ｇ−ハニカム、Ｃｕとしての含！２０ｍｇ／ｇ−
ハニカム）を用いた。Example 3 An experiment was carried out in the same manner as in Example 1. However, as a drug-supported activated carbon honeycomb, P was applied to an activated carbon honeycomb with a BET specific surface area of 800 m2/g, number of cells 300/]n2, and a thickness of 15 mm.
d (NO3) 2-Cu SO, 5 wt% HNO3
- Spray 56 wt% H2So, aqueous solution evenly and hold at 100°
One sheet treated with C in air (content as Pd 20
mg/g-honeycomb, content as Cu! 20mg/g-
Honeycomb) was used.
また空間内にＣ２Ｈ，およびＣＨ３ＮＨ２をそれぞれ含
有する標準ガスを所定量注入し、空間内を５分間強制撹
拌した後、空間内の中心部のガスをサンプリングして、
ガスクロ分析した。各成分の濃度はＣ２Ｈ，か９０ ｐ
ｐｍ、ＣＨ３ＮＨ２が５０ｐｐｂであった。この状態
で空間内のガスの処理装置ｌＡの運転を開始した（ファ
ンの実風量４０ａ／分）。５時間後空間内のガスを分析
したところＣ２Ｈ。In addition, a predetermined amount of standard gas containing C2H and CH3NH2 was injected into the space, the space was forcibly stirred for 5 minutes, and then the gas in the center of the space was sampled.
Gas chromatography analysis was performed. The concentration of each component is C2H, or 90 p
pm and CH3NH2 were 50 ppb. In this state, the operation of the gas processing device 1A in the space was started (actual air flow rate of the fan was 40 a/min). After 5 hours, the gas in the space was analyzed and found to be C2H.
の濃度はｌｐｐｍ以下、ＣＨ３ＮＨ２の濃度は１ｐｐｂ
以下で無臭であった。The concentration of CH3NH2 is less than 1ppm, and the concentration of CH3NH2 is 1ppb.
It was odorless.
実施例４
実施例１と同様に実施した。ただし薬品担持活性炭ハニ
カムとしてはＢＥＴ比表面積８００ｍ２／９、セル数３
００個／１ｎ２、厚さ１５ｍｍの活性炭ハニカムにＢｒ
２を１０重量％担持したもの１枚を用いた。Example 4 The same procedure as in Example 1 was carried out. However, as a drug-supported activated carbon honeycomb, the BET specific surface area is 800 m2/9 and the number of cells is 3.
00 pieces/1n2, Br on activated carbon honeycomb with a thickness of 15mm
One sheet carrying 10% by weight of 2 was used.
また空間内にＣ２Ｈ４，（ＣＨ３）２５．（ＣＨ３）２
ＮＩ（をそれぞれ含有する標準ガスを所定量注入し、空
間内を５分間強制撹拌した後、空間内の中心部のガスを
サンプリングして、ガスクロ分析した。Also, C2H4, (CH3)25. (CH3)2
A predetermined amount of standard gas containing NI was injected, the space was forcibly stirred for 5 minutes, and then the gas in the center of the space was sampled and subjected to gas chromatography analysis.
各成分の濃度はＣ２Ｈ４か８０ ｐ ｐ ｍ、 （ＣＨ
３）２５か８５１）Ｉ）ｂ、（ＣＨ３）２ＮＨが５５１
） Ｉ） ｂであった。この状態で空間内のガスの処理
装置１Ａの運転を開始した（ファンの実風量４０Ｑ／分
）。５時間後空間内のガスを分析したところＣ２Ｈ，の
濃度はｌｐｐｍ以下、（ＣＨ３）２５および（ＣＨ３）
２ＮＨの濃度はＯ，１ｐｐｂ以下で、無臭であった。The concentration of each component is C2H4 or 80 ppm, (CH
3) 25 or 851) I) b, (CH3)2NH is 551
) I) It was b. In this state, the operation of the gas processing device 1A in the space was started (actual air flow rate of the fan was 40Q/min). When the gas in the space was analyzed after 5 hours, the concentration of C2H, (CH3)25 and (CH3) was less than 1 ppm.
The concentration of 2NH was less than 1 ppb of O, and was odorless.
［発明の効果］
本発明によれば、除塵フィルター、活性炭ハニカム、薬
品担持活性炭ハニカムを用い、かつ担持薬品を種々変え
ることによって、ガス中のイオウ化合物、窒素化合物、
不飽和炭化水素、アルデヒド、 ノｒルボン酸、−酸化
炭素、窒素酸化物 シアン化水素なとの微量成分を効率
よく確実に除去でき、除去剤かハニノノム状であるため
、ガスの流れが均一で通気抵抗性か非常に小さく通気の
ための電気代か安く、交換か容易であり、装置か非常に
コンバク［・である。[Effects of the Invention] According to the present invention, sulfur compounds, nitrogen compounds, and
It can efficiently and reliably remove trace components such as unsaturated hydrocarbons, aldehydes, norrbonic acids, -carbon oxides, nitrogen oxides, and hydrogen cyanide.The removal agent has a honeycomb shape, so gas flow is uniform and ventilation resistance is low. The power consumption is very small, the electricity cost for ventilation is cheap, the replacement is easy, and the device is very compact.
第１図は本発明のガスの処理方法を実施する装置の一実
施例を示す構成説明図である。また、第２図は処理すべ
き空間８どガスの処理装置ＩＡとの関係を示す概略図で
ある。
代理人 弁理士 岩 １） 弘
（ほか４名）FIG. 1 is a configuration explanatory diagram showing one embodiment of an apparatus for implementing the gas processing method of the present invention. Further, FIG. 2 is a schematic diagram showing the relationship between the space 8 and the gas to be treated and the treatment device IA. Agent Patent attorney Iwa 1) Hiroshi (and 4 others)
Claims (1)
薬品担持活性炭ハニカムの順に接触させることを特徴と
するガスの処理法 （２）薬品担持活性炭ハニカムに担持された薬品が無機
酸および／または有機酸である請求項（１）記載のガス
の処理法 （３）薬品担持活性炭ハニカムに担持された薬品が臭素
である請求項（１）記載のガスの処理法（４）薬品担持
活性炭ハニカムに担持された薬品が白金族元素の化合物
である請求項（１）記載のガスの処理法 （５）薬品担持活性炭ハニカムに担持された薬品が白金
族元素の化合物とＴｉ，Ｖ，Ｃｒ，Ｍｎ，Ｆｅ，Ｃｏ，
Ｎｉ，Ｃｕ，Ａｇの化合物の少なくとも１種以上の双方
である請求項（１）記載のガスの処理法 （６）除塵フィルターが帯電フィルターである請求項（
１）記載のガスの処理法 （７）被処理ガスの導入部からガス排出部に至るガス流
路内に除塵フィルター、活性炭ハニカムおよび薬品担持
活性炭ハニカムをこの順に配置したことを特徴とするガ
スの処理装置[Claims] (1) The gas to be treated is filtered through a dust removal filter, an activated carbon honeycomb,
(2) A gas processing method characterized by contacting the drug-supported activated carbon honeycomb in this order. (2) The gas processing method according to claim (1), wherein the drug supported on the drug-supported activated carbon honeycomb is an inorganic acid and/or an organic acid. (3) The gas treatment method according to claim (1), wherein the drug supported on the drug-supported activated carbon honeycomb is bromine.(4) Claim: The drug supported on the drug-supported activated carbon honeycomb is a compound of a platinum group element. 1) Gas treatment method described in (5) The chemical supported on the chemical-supported activated carbon honeycomb is a compound of platinum group elements, Ti, V, Cr, Mn, Fe, Co,
(6) The method for treating a gas according to claim (1), wherein the dust removal filter is at least one of Ni, Cu, and Ag compounds. Claim (6) wherein the dust removal filter is a charged filter.
1) The gas treatment method described in (7) A gas treatment method characterized in that a dust removal filter, an activated carbon honeycomb, and a drug-supporting activated carbon honeycomb are arranged in this order in the gas flow path from the inlet of the gas to be treated to the gas outlet. processing equipment
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2162151A JPH0459011A (en) | 1990-06-20 | 1990-06-20 | Method and device for treating gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2162151A JPH0459011A (en) | 1990-06-20 | 1990-06-20 | Method and device for treating gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0459011A true JPH0459011A (en) | 1992-02-25 |
Family
ID=15749008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2162151A Pending JPH0459011A (en) | 1990-06-20 | 1990-06-20 | Method and device for treating gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0459011A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0796176A (en) * | 1993-09-29 | 1995-04-11 | Tousei Kk | Adsorbent of oil substance and adsorption method |
| WO1996022827A1 (en) * | 1995-01-27 | 1996-08-01 | Nippon Shokubai Co., Ltd. | Deodorant material, process for producing the same, and method of deodorization |
| JP2008238092A (en) * | 2007-03-28 | 2008-10-09 | Cs Engineering:Kk | Deodorization treatment method of tail gas |
| JP2010075879A (en) * | 2008-09-26 | 2010-04-08 | Cs Engineering:Kk | Method of deodorizing exhaust |
| KR20190065795A (en) * | 2017-12-04 | 2019-06-12 | 이두영 | Portable smoke purifier for cooking vessels |
-
1990
- 1990-06-20 JP JP2162151A patent/JPH0459011A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0796176A (en) * | 1993-09-29 | 1995-04-11 | Tousei Kk | Adsorbent of oil substance and adsorption method |
| WO1996022827A1 (en) * | 1995-01-27 | 1996-08-01 | Nippon Shokubai Co., Ltd. | Deodorant material, process for producing the same, and method of deodorization |
| JP2008238092A (en) * | 2007-03-28 | 2008-10-09 | Cs Engineering:Kk | Deodorization treatment method of tail gas |
| JP2010075879A (en) * | 2008-09-26 | 2010-04-08 | Cs Engineering:Kk | Method of deodorizing exhaust |
| KR20190065795A (en) * | 2017-12-04 | 2019-06-12 | 이두영 | Portable smoke purifier for cooking vessels |
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