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:
Oct. 10, 1978
Filed:
Mar. 14, 1977
Fusao Nishida, Tokyo, JP;
Tomiaki Yamada, Yokohama, JP;
Noriyuki Suzuki, Tokyo, JP;
Takehiko Takeda, Yokohama, JP;
Tsutomu Yanagihara, Tokyo, JP;
Katsuhiko Adachi, Yokohama, JP;
Tadashi Asanabe, Tokyo, JP;
Katuaki Ohsato, Yokohama, JP;
Kintaro Tsuda, Tokyo, JP;
Japan Gasoline Company, Ltd., Tokyo, JP;
Abstract
A process for the removal of nitrogen oxides from a waste gas containing said nitrogen oxides in conjunction with sulfur oxides is disclosed, which process comprises allowing said waste gas to come into contact with ammonia as the reducing agent at temperature in the range of from 250.degree. to 550.degree. C in the presence of a catalyst wherein an active component containing iron or copper as the active metal is supported on a silica-alumina type carrier containing not less than 60% by weight of silica and the pore volume occupied by the pores measuring 150 A or over in diameter exceeds 0.15 cc/g, for thereby causing selective catalytic reduction of said nitrogen oxides.