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. 12, 2000
Filed:
Jan. 12, 1998
Kunihiko Wada, Kawasaki, JP;
Seiichi Suenaga, Yokohama, JP;
Kazuhiro Yasuda, Yokohama, JP;
Hiroki Inagaki, Yokohama, JP;
Masako Nakahashi, Tokyo, JP;
Atsuhiko Izumi, Yokohama, JP;
Tetsuzou Sakamoto, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A gas turbine apparatus having a plurality of stages of rotor.stator blade and utilizing fuel containing 0.5 ppm or more of vanadium. A plurality of stages of the rotor.stator blade have a stage which is driven by combustion gas not including vanadium corrosion suppressing agent and a stage which is driven by combustion gas including vanadium corrosion suppressing agent and is controlled in its combustion gas temperature at below 1,458 K. In addition, the plurality of stages of the gas turbine are supplied with different kinds of combustion gases according to the temperature of each stage. Or, by disposing at least two systems of fuel supplying mechanism to one combustion chamber, the combustion temperature is controlled according to the kinds and the mixing ratio of the fuels. Therewith, while suppressing corrosion of high temperature member due to V and S, the deposition of the reaction products due to the vanadium corrosion suppressing agent and the like can be suppressed. Thereby, the system availability ratio can be improved and long life of the gas turbine can be realized. Further, due to high combustion gas temperature, efficiency can be enhanced.