COMBINED CYCLE METHOD FOR POWER GENERATING AND COMBINED-CYCLE PLANT IMPLEMENTING IT Russian patent published in 1998 - IPC

FIELD: power engineering. SUBSTANCE: electric power is produced in combined-cycle plant by effective expansion of high-pressure working agent in gas turbine and by high-pressure reheat steam fed from steam boiler burning natural minerals; we proposed that in steam turbine evident heat of working agent effectively expanded in gas turbine is conveyed to air for burning full in steam boiler unit and that part of expanded and cooled down working agent from gas turbine is mixed up with gas-turbine primary air to be compressed. Steam extracted from boiler is further heated in heat exchanger prior to its expansion. Heat exchanger is installed in combustion chamber of additional swirling-type furnace. Flue gases are discharge from swirling-type furnace to boiler combustion chamber. EFFECT: improved environmental friendliness of power plant. 10 cl, 2 dwg