COMBINED POWER PLANT WITH WASTE HEAT RECOVERY Russian patent published in 2023 - IPC F01K25/10 F25B15/00 F25B27/02 

FIELD: energy.

SUBSTANCE: invention can be used in gas and combined-cycle plants (CCP) of thermal power plants to increase the generation of electrical energy, increase the stability of the heat exchange process, the reliability of the installation and its environmental friendliness. The combined power plant with waste heat recovery comprises an air duct, an air compressor, a combustion chamber, to one inlet of which a fuel pipeline is connected, and a gas turbine inlet is connected to the outlet, a RC (Rankine cycle) evaporator, the first outlet of which is connected to a steam turbine connected to the first inlet of the RC condenser, to the first output of which the first RC pump is connected, connected to one inlet of the RC evaporator, the second RC pump is connected to the second inlet of the RC condenser, the second outlet of the RC condenser is configured to be connected to the cooling tower, the first input of the thermal oil heat exchanger is connected to the second outlet of the RC evaporator, the first output which is configured to be connected to the chimney, the absorption refrigeration machine (ARM) generator, the ORC (organic Rankine cycle) evaporator, one outlet of the ORC evaporator is connected to the second inlet of the thermal oil heat exchanger, the other outlet of the ORC evaporator is connected to the inlet of the turboexpander, to the outlet of which the first inlet of the recuperator is connected, the first outlet of the recuperator is connected to the first inlet of the condenser ORC, the first outlet of which is connected to the ORC pump, which, in turn, is connected to the second inlet of the recuperator, the second outlet of the recuperator is connected to one inlet of the ORC evaporator, the ARM evaporator, one outlet of which is connected to the first inlet of the absorber, to the outlet of which the solution pump is connected, which, in turn, is connected to the first inlet of the ARM heat exchanger, the first outlet of the ARM heat exchanger is connected to one input of the ARM generator, one output of which is connected to the second inlet of the ARM heat exchanger, the second outlet of the ARM heat exchanger is connected to a solution flow controller connected to the second inlet of the absorber, the first input of the ARM condenser is connected to the other output of the ARM generator, the first output of the ARM condenser is connected to the input of the refrigerant flow regulator, the output of which is connected to one inlet of the ARM evaporator, the second input and the second gas turbine (GT), a GT generator is installed, a RC generator is located on the axis of the steam turbine, and an ORC generator is installed on the axis of the turboexpander. In addition, the claimed device is equipped with a heat exchanger and an air recuperator, while the first inlet of the heat exchanger is connected to the air duct, the second inlet is connected to another outlet of the ARM evaporator, the first outlet of the heat exchanger is connected to the inlet of the air compressor, the second outlet is connected to another inlet of the ARM evaporator, the second inlet and the second outlet of the ORC condenser are configured to be connected to the cooling tower, the first inlet of the air recuperator is connected to the outlet of the air compressor, the second inlet is connected to the outlet of the gas turbine, the first outlet of the air recuperator is connected to another inlet of the combustion chamber, the second outlet is connected to another inlet of the RC evaporator, the second output of the thermal oil heat exchanger is connected to another input of the ARM generator, the third output of which is connected to another input of the ORC evaporator.

EFFECT: increased generation of electrical energy, increased stability of the heat exchange process, reliability of the installation and its environmental friendliness.

1 cl, 1 dwg