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:
Oct. 08, 2013
Filed:
Oct. 22, 2009
Fumiaki Sato, Mihara, JP;
Shinji Ogino, Mihara, JP;
Motonari Aihara, Mihara, JP;
Yudai Kato, Mihara, JP;
Kazuo Ishida, Yokohama, JP;
Seiji Kakesako, Hiroshima, JP;
Fumiaki Sato, Mihara, JP;
Shinji Ogino, Mihara, JP;
Motonari Aihara, Mihara, JP;
Yudai Kato, Mihara, JP;
Kazuo Ishida, Yokohama, JP;
Seiji Kakesako, Hiroshima, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A method and system for recovering COfrom gasification gas, prevents the recovered COfrom being contaminated with COS, without repeating cooling and heating operations and without increasing the steam consumption. Gasification gas being produced in a gasifierand containing CO, CO, COS and HS is subjected to dust removal in a scrubber. Then, a part of the gas is subjected to a CO shift reaction, in which CO is converted into CO, in a CO shift reactor. In one embodiment, part of the gasification gas is not subjected to the CO shift reaction by means of a bypass, and is mixed with the gas after the CO shift reaction. Thereby, the temperature of the mixture gas is set at 180° C. to 300° C., and COS in the mixture gas is converted into HS in a COS converterIn another embodiment, the part of the gasification gas not subjected to the CO shift reaction by means of a bypass, is subjected to heat exchangewith the shifted gas stream and converted in a COS converterprior to mixing with the shifted gas.