The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 2008
Filed:
Oct. 30, 2002
Satomi Ishigaki, Legal Representative, Ibaraki, JP;
Aya Ishigaki, Legal Representative, Ibaraki, JP;
Akane Ishigaki, Legal Representative, Ibaraki, JP;
Tatsuya Ishigaki, Legal Representative, Ibaraki, JP;
Eiichi Hosoya, Tokyo, JP;
Kazutaka Egami, Fukuoka, JP;
Satomi Ishigaki, legal representative, Ibaraki, JP;
Aya Ishigaki, legal representative, Ibaraki, JP;
Akane Ishigaki, legal representative, Ibaraki, JP;
Tatsuya Ishigaki, legal representative, Ibaraki, JP;
Eiichi Hosoya, Tokyo, JP;
Kazutaka Egami, Fukuoka, JP;
JGC Corporation, , JP;
Abstract
A solution of a chromium compound is impregnated into a silica-alumina carrier made of alumina and containing 1 to 5 weight % of silica relative to the weight of the carrier, thereby to obtain a decomposing catalyst carrying 10 to 15 weight % of chromium oxide relative to the weight of the catalyst in terms of CrO. By contacting mixed gas obtained through partial oxidation of heavy oil and/or coal with the decomposing catalyst, COS and HCN contained in the mixed gas are decomposed/removed. In this case, transition of alumina into boehmite can be suppressed owing to coexistence of silica and chromium oxide, so that COS and HCN can be decomposed by highly active catalytic reactions over a long time.