GAS DISTRIBUTION STATION POWER PLANT OR THE GAS CONTROL UNIT OPERATION METHOD Russian patent published in 2018 - IPC F02C6/18 F25B11/02 

FIELD: power engineering.

SUBSTANCE: invention is intended for power generation at power plants of gas distribution stations and at gas-control units. High-pressure natural gas is expanded in a turboexpander and reduces its pressure to the level required by a particular consumer, maintaining its temperature at least 278 K. Heat of combustion products expanded in a gas turbine is used to generate superheated high-pressure steam. In the gas turbine, the resulting gas-vapor mixture is expanded, its heat is used to generate superheated high-pressure steam and for heating the high-pressure natural gas in front of the turboexpander. Useful work of the turboexpander is used to compress air in the compressor, the useful work of the gas turbine is used to generate electricity in an electric generator. Cooling water is injected into the gas-vapor mixture partially cooled during the production of high-pressure superheated steam and by heating the high-pressure natural gas. Reduce the temperature of the gas-vapor mixture to 65–70 °C. Condensation of the steam contained in the gas-vapor mixture separates the condensate and cooling water from the combustion products; a smaller part of the mixture of condensate and cooling water is softened and used as feed water to produce superheated steam. Most of this mixture is divided into two streams. First stream of the mixture is cooled by atmospheric air in a cooling tower to 25–30 °C, and the second mixture stream is cooled to 15–20 °C with natural gas, expanded in a turboexpander, then the first and second cooled streams of the mixture are injected into the cooled gas-vapor mixture.

EFFECT: invention is aimed at increasing the power and thermal efficiency of the power plant of a gas distribution station or gas control unit.

1 cl, 1 dwg