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:
Sep. 19, 1978
Filed:
Jun. 10, 1977
Koichi Takami, Kita-Kyushu, JP;
Shingo Abe, Kita-Kyushu, JP;
Yukio Takigawa, Kita-Kyushu, JP;
Toshinori Tsutsumi, Fukuoka, JP;
Yoshio Kinsho, Kita-Kyushu, JP;
Mitsubishi Chemical Industries, Ltd., Tokyo, JP;
Abstract
A compressed exhaust gas containing nitrogen oxides discharged from a compressed absorption type nitric acid plant is treated by adding ammonia or an ammonia precursor to the gas and passing the gas through a NO.sub.x removing catalytic layer to an exhaust gas turbine wherein the temperature of the main flow of the exhaust gas in the zone from the point of which ammonia or an ammonia precursor is added to the outlet of the exhaust gas turbine is maintained at a temperature higher than T.degree. K = 10.sup.3 / (1.91 - 0.228 log P) [P : a sum of partial pressures of ammonia and nitrogen oxides (atm.)] and feeding an inert gas into the place of the zone in which the exhaust gas stagnates.