COMBINATION-TYPE ELECTRIC POWER STATION WITH GAS AND STEAM TURBINES Russian patent published in 2003 - IPC

FIELD: power engineering. SUBSTANCE: proposed power station contains gas turbine 1 with generator 28 and steam generators 2, 10 for steam turbine 6 with generator 29. Waste gas from gas is delivered into first waste heat recovery boiler 1 with overheaters 23, 24, economizer 3, high-pressure evaporator 22 and auxiliary burner 27, and flue gases of heat-converting plant are delivered into second waste heat recovery boiler 10. second waste heat recovery boiler 10 washed by flue gases accommodates at one side, high-pressure evaporator 16 with system of suspended pipes 13 and high- pressure steam drum 11, and at other-side low-pressure evaporator 17 with system of suspended pipes 14 and low-pressure steam drum 12. High-pressure evaporator 16 is connected through steam pipe 21 with first and second high-pressure steam overheaters 23 and 24 located in first waste heat recovery boiler 2. High-pressure steam drum with outer cooler 46 is arranged between both high-pressure steam overheater 23, 24. High-pressure steam overheater 24 is connected with steam turbine 6 through high-pressure steam pipeline 20, and low-pressure evaporator 17 is connected with steam turbine through low-pressure pipeline 25. Invention makes it possible to use low-temperature heat of flue gases forming in thermal processes to improve efficiency of steam production. EFFECT: improved efficiency of process. 13 cl, 1 dwg