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AssigneeMitsubishi Heavy Industries, Ltd.
InventorsKazushige Takaki, Yosuke Nakagawa, Takashi Sonoda, Hiroshi Tsujikawa, Daisuke Hiura
Estimating the term…
A steam supply method involves a CO2 recovery device, a first line through which low-pressure steam is extracted from a low-pressure line for supply of the low-pressure steam to a steam turbine and to the CO2 recovery device, and a second line through which medium-pressure steam is extracted from a medium-pressure line for supply of the medium-pressure steam to the first line. A low-pressure steam governing valve is provided upstream of a connection position of the low-pressure line with the first line. A medium-pressure steam governing valve of the medium-pressure line, and a steam backup valve of the second line are provided. The method includes closing the low-pressure steam governing valve and the medium-pressure steam governing valve and opening the steam backup valve based on a state of operation of the power plant.
A steam supply system that supplies steam generated at a heat recovery steam generator to a CO2 recovery device that recovers CO2 from an exhaust gas discharged by a power plant including a gas turbine, the heat recovery steam generator, and a steam turbine, the system comprising:
A steam supply method of supplying steam generated by a heat recovery steam generator to a CO2 recovery device in a plant including a power plant that includes a gas turbine, the heat recovery steam generator, and a steam turbine, the CO2 recovery device that recovers CO2 from an exhaust gas of the power plant, a first line through which low-pressure steam is extracted from a low-pressure line for supply of the low-pressure steam from the heat recovery steam generator to the steam turbine and is supplied to the CO2 recovery device, a second line through which medium-pressure steam is extracted from a medium-pressure line for supply of the medium-pressure steam from the heat recovery steam generator to the steam turbine and is supplied to the first line, a low-pressure steam governing valve that is provided upstream of a connection position of the low-pressure line with the first line, a medium-pressure steam governing valve provided at the medium-pressure line, and a steam backup valve provided at the second line, the method comprising:
Dependencies are inferred from the claim text.