COMBINED-CYCLE COGENERATION PLANT Russian patent published in 2018 - IPC F01K23/10 F02C7/36 F01K7/44 F01K13/00 

FIELD: power engineering.

SUBSTANCE: combined-cycle steam and gas plant with steam turbine compressor drive belongs to power industry and can be used to heat and power consumers in new urban micro-districts. Combined-cycle heat and gas installation comprising gas turbine plant with compressor combustion chamber, gas turbine and electric generator, steam heat recovery boiler, in which superheater, second stage evaporator, afterburning chamber are set, evaporator of the first stage, economizer, gas-water heater of heating-system water, waste heat boiler generates the superheated steam of the average parameters, in installation the main and additional back-pressure steam turbines, hot water converters of the first and second stages, deaerator are used. In heating modes of its operation, by burning additional fuel in the afterburning chamber, the steam capacity of the recovery boiler is increased, the superheated steam is supplied to an additional steam turbine, the steam exhausted in it is supplied to the second stage network heater with an increase in the thermal capacity of the installation. Net work output of an additional steam turbine is used for additional and power generation. Thermal power of the installation is changed in accordance with the heat load of the consumers and the temperature schedule of the district heating.

EFFECT: it is possible to create an economical steam and gas combined heat and power plant with a steam compressor drive, with its good adaptation when operating in the heating periods of the year with the changing heat load of the heat consumers.

1 cl, 1 dwg