Pulverized fuel combustion burner

Details Pulverized fuel combustion burner Pulverized fuel combustion burner

F - Mech Eng,Light,Heat,Weapons

23

D

F23D 1/00 (2006.01) F23C 5/06 (2006.01) F23D 1/02 (2006.01)

Patent

CA 2232805

ABSTRACT A pulverized fuel combustion burner applied to a boiler of a thermal power plant or chemical plant, a furnace of a chemical industry or the like is provided in which, even if the injection direction of the primary air nozzle changes upward or downward, a proper concentration distribution of the mixed flow of the pulverized fuel and the earner air can be obtained at the exit plane of the furnace side wall and leakage of a portion of the combustion auxiliary air into the furnace is not caused. The pulverized fuel combustion burner comprised a rich/lean flow separator provided at or near the jointed portion between the primary air nozzle and the pulverized fuel supply pipe. The rich/lean flow separator is enabled to change its direction in response to or independently of a change in an injection direction of the primary air nozzle. Thus, the rich/lean flow separator follows the change of the direction of the injection of the primary air nozzle and the mixed flow so separated rich and lean can be injected in the same direction as the primary air nozzle without any biasing.

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