METHOD OF OPERATION OF STEAM GAS PLANT OPERATING WITH USE OF STEAM COOLING Russian patent published in 2017 - IPC F01K21/00 

FIELD: power industry.

SUBSTANCE: way of operation of the steam-gas plant (SGP) is carried out using steam cooling of hot turbine elements. In order to ensure the regular operating mode and the operating life of the SGP using a combined-cycle turbine, the only water vapour of which is a cooling agent, the unit is provided with a steam-free deaeration unit, a primary water-cooler heat exchanger for generating steam used for open cooling of hot turbine elements and a device for further purification of water intended for generation of steam used for open cooling of hot turbine elements. The main heat exchanger for intermediate cooling of air is made in the form of two successive heat exchangers: a hot and cold main heat exchanger for intermediate cooling of air. The flue gas cooling coil is also implemented in the form of two successive heat exchangers: a hot and a cold flue gas exchanger. From the water outlets from the installed cold heat exchangers and the initial coolant water heat exchanger, the water is directed to the inlet of a steam-free deaeration unit, from which the deaerated water is separately supplied to the inputs: the hot main heat exchanger for intercooling the air, the hot exhalation gas heat exchanger, additional purification of water intended for generation of steam used for open cooling of hot turbine elements.

EFFECT: invention allows to increase the efficiency of the steam-gas plant.

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