Mitsubishi Heavy Industries Limited

Ryoen Technical Service Corp.

Mitsugi Suehiro

Hajime Nagano

Shintaro Honjo

Yoshinori Koyama

Masahiro Hirano

Kazuo Ishida

Katsuhiko Yokohama

Makoto Susaki

Masahiro Harada

Hiroshi Suzumura

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.

Gas combustion treatment method and apparatus therefor

Growing community of inventors

Tama, Japan

Mitsugi Suehiro