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:
Feb. 28, 2006
Filed:
Sep. 18, 2002
Masahiro Harada, Tokyo, JP;
Makoto Susaki, Tokyo, JP;
Kazuo Ishida, Tokyo, JP;
Hajime Nagano, Tokyo, JP;
Masahiro Hirano, Tokyo, JP;
Hiroshi Suzumura, Hiroshima, JP;
Shintaro Honjo, Hiroshima, JP;
Yoshinori Koyama, Nagasaki, JP;
Katsuhiko Yokohama, Nagasaki, JP;
Mitsugi Suehiro, Tama, JP;
Masahiro Harada, Tokyo, JP;
Makoto Susaki, Tokyo, JP;
Kazuo Ishida, Tokyo, JP;
Hajime Nagano, Tokyo, JP;
Masahiro Hirano, Tokyo, JP;
Hiroshi Suzumura, Hiroshima, JP;
Shintaro Honjo, Hiroshima, JP;
Yoshinori Koyama, Nagasaki, JP;
Katsuhiko Yokohama, Nagasaki, JP;
Mitsugi Suehiro, Tama, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Ryoen Technical Service Corp., Tokyo, JP;
Abstract
A gas combustion treatment method for the combustion treatment of an ammonia-containing gas and a hydrogen sulfide-containing gas, the method comprising a first combustion treatment step in which the ammonia-containing gas, together with a fuel, is introduced and burned; a nitrogen oxide reduction step downstream of the first combustion treatment step, in which a portion of the hydrogen sulfide-containing gas or the ammonia-containing gas is introduced and the nitrogen oxides produced in the first combustion treatment step are reduced in a reducing atmosphere; and a second combustion treatment step downstream of the nitrogen oxide reduction step, in which the remaining hydrogen sulfide-containing gas, together with air, is introduced and burned. The present invention provides a combustion apparatus suitable for use as a combustion furnace for off-gases resulting from the wet purification of coal gasification gas.