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:
Dec. 17, 2013
Filed:
Dec. 04, 2009
Masazumi Tanoura, Kanagawa, JP;
Kenji Muta, Kanagawa, JP;
Minoru Danno, Kanagawa, JP;
Masatoshi Katsuki, Kanagawa, JP;
Yuuko Ujihara, Kanagawa, JP;
Daishi Ueno, Tokyo, JP;
Takashi Fujinaga, Hyogo, JP;
Eiji Kato, Hyogo, JP;
Shinichiro Asami, Hyogo, JP;
Tadashi Aoki, Hyogo, JP;
Masazumi Tanoura, Kanagawa, JP;
Kenji Muta, Kanagawa, JP;
Minoru Danno, Kanagawa, JP;
Masatoshi Katsuki, Kanagawa, JP;
Yuuko Ujihara, Kanagawa, JP;
Daishi Ueno, Tokyo, JP;
Takashi Fujinaga, Hyogo, JP;
Eiji Kato, Hyogo, JP;
Shinichiro Asami, Hyogo, JP;
Tadashi Aoki, Hyogo, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
An object of the present invention is to provide a flue gas purifying device that can suppress leakage of ammonia and can efficiently decrease nitrogen oxides in flue gas. The object is achieved by a flue gas purifying device including: an exhaust pipe; a urea-water injecting unit that injects urea water into the exhaust pipe; a catalytic unit that includes a urea SCR catalyst that promotes a reaction between ammonia and nitrogen oxides and a support mechanism that supports the urea SCR catalyst in the exhaust pipe, and is arranged on a downstream side to a position where urea water is injected; a concentration measuring unit arranged on a downstream side to the catalytic unit in a flow direction of flue gas to measure an ammonia concentration in flue gas having passed through the urea SCR catalyst; and a control unit that controls injection of urea water by the urea-water injecting unit based on an ammonia concentration measured by the concentration measuring unit.