Centralized heat supply apparatus and heat supply method for gas-steam combined cycle

摘要

The present invention relates to a gas-steam combined cycle concentrated heat supply apparatus and a heat supply method. The gas-steam combined cycle centralized heat supply apparatus includes a gas-steam combined cycle system, a heating network return water heating system, and a thermal station, the gas-steam combined cycle system via the heating network return water heating system. The gas-steam combined cycle system includes a gas turbine, a waste heat boiler, a direct contact flue gas condensing heat exchanger, and a steam turbine; the gas turbine is a waste heat boiler The waste heat boiler is connected to a direct contact flue gas condensing heat exchanger and a steam turbine; the thermal station includes a hot water absorption heat pump and a water-water heat exchanger. Heating network return water heating system recovers flue gas waste heat A steam-type absorption heat pump and a steam-water heat exchanger; a steam-type absorption heat pump for recovering flue gas waste heat is a steam-water heat exchanger, a direct contact flue gas The condensing heat exchanger, the waste heat boiler, the steam turbine, and the thermal station are connected to each other, and the steam-water heat exchanger is connected to the waste heat boiler, the steam turbine, and the thermal station, respectively. The present invention can be widely applied to the waste heat recovery industry for power generation facilities. [Selection] Figure 1