FIELD: heating.
SUBSTANCE: present invention is meant for generating steam and can be used in power engineering. The steam generator on waste heat from a gas-steam power plant has an exhaust heat boiler, to which exhaust gas from a gas turbine is supplied and which, besides that, has one or two evaporators in the exhaust heat boiler, for generating working steam for the gas turbine. Combustion gas from a furnace plant is fed into the exhaust heat boiler. A return line is provided for reverse feeding of combustion gas. The furnace plant is connected into the circulation loop, which is formed by the heater section of the exhaust heat boiler and the return line. Collection of at least part of the combustion gas from the exhaust heat boiler is done in the direction of the combustion gas after outlet. At least one evaporator of auxiliary steam is provided for heating and retaining spinning reserve of the steam turbine.
EFFECT: reduced expenditure on running the steam generator.
6 cl, 2 dwg
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