FIELD: heating systems.
SUBSTANCE: invention is designed for heat recovery of combustion products and can be used in power engineering. Boiler plant includes boiler with furnace in which there located are burners connected to air path with air heater and fuel path - with fuel preparation point, discharge flue gas duct with contact heat exchanger located in it, fuel heater and heat exchanger of external consumers. Contact heat exchanger is connected through discharge heated water path to air heater, fuel heater and heat exchanger of external consumers, the outlet paths of which are connected as to cooled water by means of common discharge line to inlet of contact heat exchanger and to fuel preparation point.
EFFECT: invention provides increase in heat efficiency of exhaust flue gases being used and economy of boiler plant as a whole when firing coal-water fuel in it.
2 cl, 1 dwg
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