| 摘要 |
PURPOSE:To efficiently remove the trace components in a gas by a convenient means with the gas-flow resistance reduced by bringing the gas to be treated successively into contact with a charged filter, an activated-carbon honeycomb and a chemical carrying activated-carbon honeycomb. CONSTITUTION:A charged filter 3, an activated-carbon honeycomb 4, a chemical carrying activated-carbon honeycomb 5 and a fan 6 are arranged in this order in the gas passage extending from a gas inlet part 1 to a discharge part 7 in this gas treating device 1A. The fine-grain solid such as dust is removed by the charged filter 4. The oils, hydrocarbons, hydrogen sulfide, etc., in the gas are physically adsorbed on the activated carbon in the activated-carbon honeycomb 4 and removed. An inorg. acid, bromine, the compd. of a platinum- group element, etc., are used as the chemical to be deposited on the chemical carrying activated-carbon honeycomb and selected in accordance with the kind of the gas to remove the basic material, unsaturated hydrocarbons, nitrogen oxides, aldehydes, etc., in the gas. Since the honeycomb is used, the gas flow is uniformized, and the gas-flow resistance is minimized. |
