| 摘要 |
PROBLEM TO BE SOLVED: To provide a high temperature steam turbine power generation plant of main steam temperature not less than 675°C and output not less than 100 MW compatibly providing excellent reliability and cost, and comprising a vertical boiler excellent in combustion efficiency. SOLUTION: The high temperature steam turbine plant of main steam temperature not less than 675°C and output not less than 100 MW has a top turbine form and a construction mentioned below. The plant comprises a boiler building including the vertical boiler having VHT (Very High Temperature) turbine installed therein and a turbine building installed with constructing a foundation on the ground. The VHT turbine and a generator connected thereto are installed above the boiler. The highest pressure steam pipe between the boiler building and the turbine building is composed of ferrite steel or austenite steel containing 50 wt.% or more Fe. Inlet temperature of the VHT turbine is set to 675°C or higher, and outlet temperature is set in a range not lower than 550°C and not higher than 650°C. COPYRIGHT: (C)2009,JPO&INPIT
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