FIELD: power industry.
SUBSTANCE: invention relates to machine building. The invention relates to mechanical engineering area. The fuel gas heating system with the cogeneration unit where the cogeneration unit is connected to the control unit, is interconnected by fuel gas supply and discharge pipelines with the modular block of fuel gas preparation (MBFGP) and the engine of the gas compressor unit (GCU) and comprises two series connected heat exchangers: the gas-oil heat exchanger (GOHE) and the waste heat exchanger of exhaust gases heat (WHEEG) where the heating heat carriers are hot oil and exhaust gases of the gas-turbine engine of the cogeneration unit respectively. Simultaneously, the MBFGP natural gas heating system is connected by the additional gas-oil heat exchanger where the heating heat carrier is hot oil of GCU engine, and the residual waste heat exchanger, by means of which remained heat of exhaust gases of the cogeneration unit which have passed through WHEEG and heated the fuel gas goes for the room heating, is connected to WHEEG. In the fuel gas pipeline before the input of heated fuel gas into the GCU engine at least one explosion-proof tubular electric heater for additional electric heating of fuel gas is mounted and connected to the cogeneration unit. The electric power generated by the cogeneration unit goes in addition for operation of at least one fan of the air cooler for gas and at least one electric heater.
EFFECT: invention allows to improve overall performance of system.
3 cl, 1 dwg
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