Westerman, Hattori, Daniels & Adrian, LLP
Method for regenerating COS hydrolysis catalyst
The method for regenerating a carbonyl sulfide (COS) hydrolysis catalyst according to the present invention is a method for regenerating a Ba/TiO2 based carbonyl sulfide (COS) hydrolysis catalyst by hydrolyzing COS which is contained in a gas obtained by gasifying a carbon raw material, wherein a spent COS hydrolysis catalyst is washed with water, dried, immersed in an aqueous solution of a barium salt for a prescribed amount of time, dried, and calcined so as to re-support the active component on the surface of the COS hydrolysis catalyst, thus enabling the regeneration of the COS hydrolysis catalyst.
MITSUBISHI HEAVY INDUSTRIES, LTD.
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Toshinobu Akihiro Hiroshi Masanao Yukio
Yasutake Sawata Yoshioka Yonemura Tanaka