| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for recovering alcohols, etc., from a waste gas whereby the alcohols, etc., can be recovered by adsorption without using a large amount of an adsorbent even when the waste gas contains alcohols and hydrocarbons. SOLUTION: In a method for treating a waste gas containing alcohols, etc., by introducing it into at least one adsorption tower 1 in which an adsorption step and a regeneration step are alternatingly repeated, the tower 1 is packed with an adsorbent being hydrophobic silica gel alone or a combination thereof with hydrophobic zeolite; the waste gas is discharged into the atmosphere after removing the alcohols, etc., therefrom by their adsorption on an adsorbent in the adsorption step; the alcohols, etc., are desorbed from the adsorbent by treatment with a purge gas in steam or a vacuum during the regeneration step; and the gas produced from the desorption is cooled to condense and recover the alcohols, etc.</p> |
