Power plants – Combustion products used as motive fluid – Multiple fluid-operated motors
Patent
1998-01-12
2000-09-12
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
Multiple fluid-operated motors
60 39461, F02C 320
Patent
active
061160164
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.
REFERENCES:
patent: 2631929 (1953-03-01), Thorpe et al.
patent: 2968148 (1961-01-01), Rocchini et al.
patent: 5561977 (1996-10-01), Harada et al.
Inagaki Hiroki
Izumi Atsuhiko
Nakahashi Masako
Sakamoto Tetsuzou
Suenaga Seiichi
Casaregola Louis J.
Kabushiki Kaisha Toshiba
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