METHOD FOR OPERATION OF THE COMBINED-CYCLE PLANT OF THE POWER PLANT Russian patent published in 2022 - IPC F01K23/10 

FIELD: energy.

SUBSTANCE: invention relates to energy and can be used at thermal power plants. A method for operation of a combined-cycle plant of a power plant is proposed, through which atmospheric air is supplied to the turbocompressor of a gas turbine plant, where it is compressed to the required pressure, the air compressed in the turbocompressor is divided into primary and secondary, primary air and organic fuel are fed into the combustion chamber of a gas turbine plant, where the combustion process is carried out organic fuel with the formation of combustion products heated to a high temperature, the combustion products are mixed with secondary air, the gases formed during the mixing process are sent to the gas turbine, the gas expansion process is carried out in the gas turbine and the work of the gas turbine cycle is performed, expended on driving the turbocharger and electric generator, which have been used up in In the gas turbine, the gases are sent to the waste heat boiler, where, in the process of cooling the gases, water vapor is generated in the heat exchange surface, the water vapor is fed into the steam turbine, and the exhaust gases are removed through the gas duct to the exhaust tower with natural draft, in the steam turbine, the process of expansion of water vapor is carried out and the useful work of the steam-power cycle is performed, expended on driving an electric generator, the water vapor exhausted in the steam turbine is removed to the condenser, where, in the process of heat exchange with circulating water, the water vapor is condensed, the circulating water is sent to a cooling tower with natural draft for cooling with atmospheric air, at negative temperatures of the outside air, part of the exhaust gas flow of the waste heat boiler at a temperature of 100–120°C is directed through the pipeline to the upper part of the exhaust tower of the cooling tower with natural draft, and by means of an additional gas distribution device, this exhaust gas flow is supplied by spreading jets along the perimeter of the upper part of the exhaust tower of the cooling tower and carry out the separation of the flow of the mixture of exhaust gases with moist air from the cold wall, while the temperature of the inner surface of the wall of the exhaust tower of the cooling tower is increased to positive values, which excludes its icing from the inside, at the same time, water vapor is condensed from the exhaust gases on the inner surface of the wall of the exhaust tower of the cooling tower and the condensate of water vapor from the exhaust gases is used as additional water of the circulating water supply system, in addition, an additional gas distribution device is made in the form of a cross-section of an annular collector decreasing in the course of gases, equipped with narrowing nozzles of a rectangular shape, directed upwards parallel to the wall of the exhaust tower of the cooling tower.

EFFECT: increasing the efficiency of the combined cycle plant of the power plant.

1 cl, 2 dwg