METHOD AND PLANT FOR MECHANICAL AND THERMAL ENERGY GENERATION Russian patent published in 2018 - IPC F02C3/00 

FIELD: energy.

SUBSTANCE: invention relates to heat engineering. Method for generating mechanical and thermal energy includes the steps in which hot gases from the combustion chamber are directed to an inlet to a steam-gas turbine, the pressure in the combustion chamber being at least 7.5 MPa. Gases spent in the steam-gas turbine at a pressure of 0.2–0.9 MPa enter the first cooler of the exhaust gases. Exhaust gases from the first coolant are fed to a first contact cooler where they are cooled to the temperature necessary to separate water from the exhaust gases by condensing it, then the condensed water is removed from the first contact cooler. Exhaust gases from the first contact coolant, containing carbon dioxide as the main constituent, are sent to the compressor inlet, which compresses the gases to a pressure of at least 3.5 MPa. Compressed exhaust gas is supplied to the second contact cooler, where they are cooled. From the second contact cooler the cooled exhaust gases enter the second cooler, where the exhaust gases are cooled to the temperature required to condense the carbon dioxide, further, the condensed carbon dioxide is removed from the second coolant. Some of the water withdrawn from the first contact cooler enters the inlet of the water pump-regulator, which pumps it into the combustion chamber. Some of the carbon dioxide condensed in the second cooler enters the carbon dioxide pump-regulator inlet, which pumps it into the combustion chamber. Carbon fuel and oxygen, respectively, are fed into the combustion chamber by a fuel pump-regulator and an oxygen pump-regulator, under the pressure necessary to supply the combustion chamber. Also, an installation for generating mechanical and thermal energy is disclosed.

EFFECT: invention makes it possible to increase the efficiency of the installation.

21 cl, 1 dwg