FIELD: power engineering.
SUBSTANCE: invention relates to power engineering, is aimed at improvement of combined-cycle plants (CCP) and can be used in designing and creating new and upgrading existing power plants. Combined-cycle plant with deep waste gas heat recovery includes a gas turbine plant, a waste heat boiler, a steam turbine plant and a condensing heat exchanger of waste gas heat. Gas-turbine plant includes gas turbine, multi-stage turbo compressor, combustion chamber and electric generator. Waste-heat steam boiler with gas duct is equipped with gates and chimney. Steam-turbine plant consists of a steam turbine with a condenser equipped with a condensate collector, an electric generator, a cooling tower in the condenser circuit and pumps – nutrient, circulating and condensate ones. Waste heat exchanger inlet is connected to the condensate collector of the steam turbine condenser, and the outlet is connected to the condensate supply line from the condensate collector of the steam turbine condenser to the waste-heat steam boiler.
EFFECT: disclosed power plant provides multiple effect: water losses with water or steam injection are excluded, maximum energy efficiency, environmental effect, elimination of condensation in gas duct and stack, improved conditions of their service, eliminated need for recirculation of flue gases to prevent condensation in circuit with water-to-water heat exchanger.
1 cl, 4 dwg
