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

1975-12-01

1977-01-11

Tollberg, Stanley H.

Cutlery

222, B65G 5316

Patent

active

040023729

ABSTRACT:
A metering and delivery system for feeding finely powdered coal to a combustion chamber includes a hopper containing finely ground coal, a vertical feed pipe extends from the hopper and a horizontal metering conduit is connected to the lower end of the feed pipe so that the coal provides a surface of repose in the metering conduit below an air flow 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 openings to entrain coal for injection by an injector lance into a combustion space. Metering of the coal is provided by inversely operated valves through which ambient air flows to the openings in the metering conduit.

REFERENCES:
patent: 2391048 (1945-12-01), Vose
patent: 3186769 (1965-06-01), Howlett, Jr.
patent: 3245725 (1966-04-01), Wildman et al.

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