FIELD: heat power engineering.
SUBSTANCE: power plant consists of liquefied oxygen, natural gas and water supply lines to combustion chamber (7) connected to at least one steam-gas turbine (12), which outlet is connected to exhaust gas cooling and condensation line, including exhaust gas recuperative cooler (13), contact heat exchanger (15) of low pressure, compressor (18), contact heat exchanger (19) of high pressure and device (20) of carbon dioxide liquefaction. Exhaust gas cooling and condensation line additionally includes heat exchanger (30) located in front of contact heat exchanger (15) and built in evaporator (29), water outlet of which (29) is connected to at least one section of water supply to contact heat exchanger (19) through feed pump (27) and heat exchanger (28) of cooling water of contact heat exchanger (19). Water outlet of the contact heat exchanger (19) is connected to the cooling water inlet of evaporator (29) through another feed pump (27) and the cooling water heat exchanger (28). Steam outlet of evaporator (29) is connected to condenser (31), having built-in surface heat exchanger (32) for heating system water, output of which (32) is connected to the input to the heating network, and the input is connected to the output of heating system (25), one of the inputs of which (25) is connected to the output from the heating network, and its (25) other inlet is connected to the water outlet of the contact heat exchanger (15), and the other outlet is connected to at least one water supply section (16) of the contact heat exchanger (15). Also disclosed is a method of operating a power plant.
EFFECT: increasing the efficiency of the plant at increasing the water heating temperature of the heat network.
12 cl, 3 dwg
