METHOD OF OPERATION OF STEAM-GAS PLANT OF POWER PLANT Russian patent published in 2019 - IPC F01K23/10 

FIELD: power engineering.

SUBSTANCE: invention relates to power engineering and can be used at thermal power plants. To increase efficiency of gas turbine plant two-stage turbo compressor of gas turbine plant is proposed, consisting of stage of low pressure and stage of high pressure, and proposed to perform intermediate cooling of cyclic air compressed in low-pressure stage before its supply to high-pressure stage in intermediate air cooler by supplying into its heating path feed water of waste heat boiler of gas-turbine plant at temperature of 30–35 °C. To increase efficiency of waste heat boiler of gas-turbine plant by reducing temperature of exhaust gases in tail part of waste heat boiler additionally installed heat exchange surface for heating source water to temperature of 30–35 °C before feeding it to a chemical water treatment plant. As a result of heat exchange process between outgoing gases at temperature of 105–110 °C at the inlet of the additional heat exchange surface and initial water having a temperature at the inlet to the additional heat exchange surface 5–15 °C, temperature of spent gases in waste heat boiler is reduced, which increases efficiency of waste heat boiler.

EFFECT: improving the efficiency of a gas turbine plant and a waste heat boiler of a power plant, as well as increasing the efficiency of a steam-gas plant of a power plant; higher efficiency of gas-turbine plant and waste heat boiler increases efficiency of steam-gas plant of power plant.

1 cl, 1 dwg