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:
Feb. 22, 2000
Filed:
Aug. 01, 1996
Katsuyuki Kurihara, Chiba-ken, JP;
Mitsuyuoshi Kaneko, Tokyo, JP;
Keisuke Tsukamoto, Tokyo, JP;
Koiti Ohya, Kanagawa-ken, JP;
Hajime Kawaguchi, Tokyo, JP;
Tetsuo Msuyama, Mie-ken, JP;
Ken Shiraga, Mie-ken, JP;
Kiyoshi Kadowaki, Mie-ken, JP;
Kenichi Kiyono, Mie-ken, JP;
Kazutaka Ida, Kanagawa-ken, JP;
Yoshihiro Taki, Tokyo, JP;
Katsuhisa Tanaka, Tokyo, JP;
Ebara Corporation, Tokyo, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
In a method for treating a combustion exhaust gas from a waste burning facility, the exhaust gas has its temperature lowered to 180-230.degree. C., in a temperature lowering unit, is freed of dust in a dry dust collector, passed through a dioxin and NOx removing unit using a vanadium oxide-based catalyst and, thereafter, the exhaust gas at 180-230.degree. C. is further passed through a heat exchanger to effect heat recovery. The vanadium oxide-based catalyst is a vanadium oxide alone or the combination thereof either with an oxide of at least one element selected from the group consisting of molybdenum, tin, yttrium, boron and lead or with gold. In addition, a tungsten oxide may be used. These catalysts are preferably carried on titania for use. The method and an apparatus for implementing it require a simple system configuration and yet assure high thermal efficiency while achieving efficient removal of dioxins and nitrogen oxides.