FIELD: combustion control for boiler units at low-temperature vortex combustion of solid fuel. SUBSTANCE: air flow rate of method of low-temperature vortex combustion of solid fuel in boiler unit at undergrate blast and control of rate of flow of total air by content of oxygen in flue gases is regulated in accordance with static pressure in undergrate blast nozzle passage. Combustion control device includes total air and blast regulators, oxygen content sensor and undergrate blast nozzle sensor made in form of air static pressure sensor. EFFECT: facilitated control of solid fuel combustion; enhanced operational reliability of boiler. 7 cl, 2 dwg
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