| 摘要 |
The present invention provides an apparatus and process for separating and removing chemical impurities from air which impurities are difficult to absorb. The apparatus for carrying out the process of the present invention comprises a reaction tower (11, 51, 91) into which the air-gas mixture is fed, aperture means (35, 74, 96) in a wall (16, 60, 98) of the tower, at least one filter means (12, 52, 92) carried in the reaction tower, means for distributing (13, 58, 93) an absorbent medium onto the filter, collecting means (14, 54, 94) beneath the filter for collection of the absorbent medium passing through the filter, and fan means (15, 55, 95) provided in the aperture for creating a flow of air through the reaction tower for the separation of substantially all of the impurities therefrom. The process of the present invention for the separation of chemical air impurities from air-gas mixtures comprises the steps of distributing an absorbent medium over at least one pack of stratified filter mats carried in a reaction tower, introducing the air-gas mixture to the filter mats and, creating a flow of air through the tower whereby the air-gas mixture is drawn through the filter mats and exits from the tower substantially free of chemical impurities. Absorbent medium such as caustic soda, sodium hypochlorite, water, hydrogen peroxide and mixtures thereof is particularly useful.
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