FIELD: thermal power engineering.
SUBSTANCE: invention relates to the field of thermal power engineering and can be used in thermal power plants (TPPs) with combined cycle gas turbine unit during their new construction or technical re-equipment with more energy efficient equipment. The system for the production of environmentally friendly fuel is connected to a TPP equipped with a combined cycle plant and using fuel gas from a gas distribution station as fuel. The system contains a liquefied natural gas production unit, a hydrogen production unit by electrolysis, two, but not limited to, gas-oil heat exchangers, one, but not limited to, an expander with an electric generator and a water treatment unit for filtering and cleaning the condensate flow from the cooling tower water traps. The gas-oil heat exchangers and the expander are interconnected in series and connected to the fuel gas supply line. The electric generator of the expander is electrically connected to the liquefied natural gas production unit and to the hydrogen production unit, and the water treatment unit is connected to the outlet of the water traps of the cooling tower and is connected by pipelines for supplying and draining the condensate flow to the electrolyzer of the hydrogen production unit. Both gas-oil heat exchangers are connected to the oil supply systems of the gas and heating steam turbines, as well as to the flue gas exhaust system of the waste heat boiler of the combined heat and power plant.
EFFECT: organizing the production of environmentally friendly fuel: liquefied natural gas and hydrogen during the operation of a TPP with a combined cycle plant, increasing energy efficiency and, in general, the efficiency of such a TPP.
1 cl, 1 dwg
