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:
Apr. 16, 2013
Filed:
Feb. 26, 2009
Katsumi Nochi, Hiroshima, JP;
Yoshiaki Obayashi, Hiroshima, JP;
Masashi Kiyosawa, Nagasaki, JP;
Shintaro Honjo, Mihara, JP;
Katsumi Nochi, Hiroshima, JP;
Yoshiaki Obayashi, Hiroshima, JP;
Masashi Kiyosawa, Nagasaki, JP;
Shintaro Honjo, Mihara, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
In an exhaust gas treatment, the amount of a highly corrosive mercury-halogenating agent to be added is reduced with the mercury-removing efficiency maintained high. A mercury-halogenating agent () and ammonia () are added to combustion exhaust gas from a boiler, the exhaust gas containing NO, SOand mercury. The exhaust gas is brought into contact with a CO/HC oxidation catalyst () and is then subjected to reduction denitration () in the presence of a solid catalyst. Thereafter, metallic mercury is oxidized to halogenated mercury. Then, the exhaust gas is wet-desulfurized () with the alkaline absorbing solution, and the halogenated mercury is removed.