PULVERIZED-FUEL FURNACE Russian patent published in 1994 - IPC

FIELD: thermal power engineering. SUBSTANCE: pulverized-fuel furnace has vertical prismatic combustion chamber with burners inclined downwards and secondary-blast upper nozzles installed on its two opposite walls, and secondary-blast lower nozzles located in lower part of dry bottom. Burners are mounted above upper secondary-blast nozzles and tilted down through angle greater than that through which the latter are inclined. Lower secondary-blast nozzles are mounted on dry bottom slopes symmetrically in respect to vertical symmetry plane of furnace. EFFECT: improved economic efficiency and reliability of furnace. 2 cl, 1 dwg