METHOD OF COMBUSTION OF PULVERIZED FUEL AND DEVICE FOR ITS REALIZATION Russian patent published in 1998 - IPC

FIELD: various heat-engineering plants. SUBSTANCE: device for combustion of pulverized fuel in a tangential burner boiler and reduction of liberation nitric oxides includes operation of feed of essentially air-deficit mixture of fuel and primary air through fuel feed line 1 tangentially to the boiler burner for formation of reducing flame 11, operation of injection at least of one air flow for combustion to the burner. Recirculation and turbulence of the flow of primary air and fuel at open end 2 of fuel feed line 1 are ensured due to the passage of them through flame holder 9 projecting to fuel feed line 1, and the air flow for combustion is drawn aside from the flow of primary air and fuel so as to prevent mixing of air for combustion with reducing flame 11. EFFECT: facilitated procedure. 19 cl, 6 dwg