OXYGEN-FUEL POWER PLANT Russian patent published in 2021 - IPC F02C3/34 F01K23/10 

FIELD: electric power.

SUBSTANCE: invention can be used in the development of power plants with low emissions of harmful substances into the atmosphere and is aimed at reducing fuel consumption. The oxygen-fuel power plant contains a multistage compressor, a combustion chamber, a fuel compressor, an air separation unit, a gas turbine, a waste heat boiler containing a hot gas coolant circuit and a cold water coolant circuit, a cooler-separator, a multistage compressor with intermediate cooling, a steam turbine, a condenser, a pump, a multi-flow surface heat exchanger containing a hot coolant circuit and a cold coolant circuit, a turbo expander, a first electric generator, a second electric generator, and a third electric generator. The outlet of the multistage compressor is connected to the first inlet of the combustion chamber, the outlet of the fuel compressor is connected to the second inlet of the combustion chamber, and the third inlet of the combustion chamber is connected to the first outlet of the air separation unit. The outlet of the combustion chamber is connected to the inlet of the gas turbine, the outlet of which is connected to the hot gas circuit of the heat carrier of the waste heat boiler. The outlet of the hot gas circuit of the heat carrier of the waste heat boiler is connected to the cooler-separator. The outlet of the cooler-separator is connected in parallel with the inlet of the multistage intercooler compressor and with the inlet of the multistage compressor. In addition, the outlet of the cold water circuit of the heat carrier of the waste heat boiler is connected to the inlet of the steam turbine, the outlet of which is connected to the condenser. The pump inlet is connected to the condenser outlet, and the pump outlet is connected to the inlet of the cold water circuit of the waste heat boiler. The inlet of the hot circuit of the heat carrier of the multi-stream surface heat exchanger is connected to the channels for taking the refrigerant from the multistage compressor, and its outlet is connected to a gas turbine. The second outlet of the air separation unit is connected to the inlet of the coolant circuit of the multi-flow surface heat exchanger, the outlet of which is connected to the turboexpander.

EFFECT: reduced flow consumption.

1 cl, 1 dwg