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:
Mar. 31, 2009
Filed:
May. 27, 2004
Kiyoshi Amou, Chiyoda, JP;
Makoto Yamakado, Tsuchiura, JP;
Hiroshi Kusumoto, Tsuchiura, JP;
Masami Nagano, Hitachinaka, JP;
Ikuhisa Hamada, Tokyo, JP;
Toshifumi Mukai, Kure, JP;
Hiroshi Yokota, Shonan, JP;
Kiyoshi Amou, Chiyoda, JP;
Makoto Yamakado, Tsuchiura, JP;
Hiroshi Kusumoto, Tsuchiura, JP;
Masami Nagano, Hitachinaka, JP;
Ikuhisa Hamada, Tokyo, JP;
Toshifumi Mukai, Kure, JP;
Hiroshi Yokota, Shonan, JP;
Hitachi High-Technologies Corporation, Tokyo, JP;
Babcock-Hitachi K.K., Tokyo, JP;
Abstract
To provide an engine exhaust gas treatment system that can efficiently reduce and remove NOx using easy-to-handle urea as the reducing agent, regardless of the engine operating conditions. An exhaust gas denitration system in which an exhaust gas is introduced into the denitration catalyst reactorprovided in the exhaust gas flue, where NOx is reduced and removed in the presence of the denitrati on catalyst, wherein a diversion means provided in the exhaust gas flueintroduces part or all of the exhaust gas into a urea solution injection evaporator having a heating means by the heaterand the heat from the exhaust gas and the heat from the heater serve to generate ammonia that is then circled and mixed with the exhaust gas and introduced into the denitration catalyst reactor