FIELD: physics.
SUBSTANCE: invention relates to boilers operating on gasifiable pulverised coal. The boiler operating on gasifiable pulverised coal includes: a boiler housing with a furnace; a rotary regenerative heater; a flue gas duct, the input device of which is connected to the furnace and the output device is connected to the rotary regenerative heater, wherein multiple steam superheaters are installed in the flue gas duct; and the air duct for feeding air into the other receiving part of each pair of receiving parts, so that heat carrier received therein exchanges heat with air; a high-temperature collection gas duct, one end of which is connected to the end of the flue gas duct facing the furnace, and the other end is connected to the output device of the flue gas duct; and a gas collection control device for controlling a first volume of flue gas fed through the high-temperature collection gas duct.
EFFECT: invention is aimed at improving completeness of fuel combustion, reducing environmental pollution, improve stability and sustained operation of the boiler.
9 cl, 2 dwg
