BOILER FURNACE Russian patent published in 1997 - IPC

FIELD: thermal power stations burning gas and dust of solid fuel. SUBSTANCE: furnace contains vertical tetrahedral prismatic combustion chamber and main burners mounted on its two opposite walls in at least two horizontal rows; main burners are fitted with nozzles for introduction of air, aeromixture and fuel gas oriented tangentially relative to reference circle in center of chamber; circles of fuel nozzles are inside circle of air nozzles; additional burners are fitted on walls free from main burners. Additional burners are mounted in pairs at level of lower horizontal row of main burners symmetrically relative to horizontal axis of combustion chamber at angle of turn between combustion chamber and plane of exhaust section of γ deg and pitch of C-(0.13-0.75)B, where B is width of walls where additional burners are fitted, m. EFFECT: enhanced efficiency. 4 dwg