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:
Jan. 08, 2008
Filed:
Apr. 03, 2003
Hitoshi Nakamura, Nagasaki, JP;
Norihisa Kobayashi, Tokyo, JP;
Kozo Iida, Hiroshima, JP;
Osamu Naito, Nagasaki, JP;
Yoshiaki Obayashi, Hiroshima, JP;
Hitoshi Nakamura, Nagasaki, JP;
Norihisa Kobayashi, Tokyo, JP;
Kozo Iida, Hiroshima, JP;
Osamu Naito, Nagasaki, JP;
Yoshiaki Obayashi, Hiroshima, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A high temperature denitration catalyst of a gas turbine single plant contains TiO, at least one of WOand MoOand VOof 0.5 wt % or less, preferably 0.2 wt % or less, or none of VO, and is optimized to be used in a temperature range up to a maximum 450 to 600° C. The used high temperature denitration catalyst is immersed into a V-containing water solution and dried and/or burned. An intermediate temperature denitration catalyst is produced containing a VOcomponent of 0.5 wt % or more, preferably 1.0 wt % or more, and is optimized for use in a temperature range of 250 to 450° C. This intermediate temperature denitration catalyst is re-used in a combined cycle plant after being modified or in other plants.