Method for deodorizing and cleaning offensive odor gas
AssigneeSankyo Kogyo Co., Ltd.
InventorToshihiro Watanabe
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Abstract
The present invention relates to for deodorizing and cleaning offensive gas which comprises treatment with a lignin solution after washing the gas to remove basic offensive ingredients. The method is excellent in efficiency of deodorization and maintenance cost especially for offensive odor ingredients that are hard to decompose.
Claims11
A method for deodorizing and cleaning offensive composite malodorous gas containing basic ingredients and sulfur compounds, which comprises the steps of washing the gas with an organic acid solution to remove basic offensive ingredients and then treating with a lignin-sulfonate solution.
The method as claimed in claim I, wherein the treatment with a lignin-sulfonate solution removes acidic ingredients in the offensive composite malodorous gas selected from the group consisting of hydrogen sulfide, methyl mercaptan and methyl sulfide.
Dependencies are inferred from the claim text.