Pulverulent material metering and delivery system and method

Details Pulverulent material metering and delivery system and method Pulverulent material metering and delivery system and method

B - Operations, Transporting

65

G

110/25, 302/29

B65G 53/16 (2006.01) B65G 53/14 (2006.01) F23K 3/02 (2006.01)

Patent

CA 1052185

ABSTRACT OF THE DISCLOSURE A meterinq and delivery system for feeding finely powdered coal to a combustion chamber includes a hopper contain- ing finely ground coal, a vertical food pipe extends from the hopper and a horizontal metering conduit is connected to the lower end of the feed pipe so that the coal provide a surface of repose in the metering conduit be1ow an air low opening with a bleed opening being downstream of the air flow opening. A venturi jet housing provides suction on the metering conduit drawing ambient air into the opening to entrain coal for injection by an injector lance into a combustion space. Meterinq of the coal is provided by inversely operated valves through which ambient air flows to the openings in the metering conduit.

263878

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