FIELD: gas industry.
SUBSTANCE: invention relates to use of main natural gas for operation of boiler house and can be used in systems of gas supply to boilers and gas supply with liquefied natural gas (LNG) of remote areas. Gas control plant of the boiler house includes a boiler, gas-reducing valves, gas heaters, a turbine expander kinematically connected to an electric generator. Inlet of the turboexpander is connected by a pressure pipeline to the main pipeline. Plant is equipped with coupled gas coolers with switching valves for their operation in turn in cooling mode with gas leaving the turbine expander through the separation device, and heating mode with gas supplied from gas heaters connected in series in counterflow circuit, supplied from separation device at outlet of turboexpander, operating on outgoing combustion products of boiler. Cryogenic tank of liquefied natural gas is attached to the separation device by means of a pipeline with a cryogenic pump.
EFFECT: higher efficiency of gas control plant of the boiler house.
4 cl, 2 dwg
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