Method for obtaining devolatilized bituminous coal from the effl

Details Method for obtaining devolatilized bituminous coal from the effl Method for obtaining devolatilized bituminous coal from the effl

1997-01-06

1998-07-14

Chiesa, Richard L.

Gas separation: processes

Electric or electrostatic field

Plural separate stages or zones

96 75, 110345, B03C 304

Patent

active

057797641

ABSTRACT:
A method for obtaining devolatilized coal, utilizing a multi-zone electrostatic precipitator, from the air-borne effluent streams of coal fired boilers includes the steps of directing an effluent stream, generated by the combustion of coal and carrying a plurality of particles including carbon and ash, to an electrostatic precipitator, wherein the plurality of particles include first and second pluralities of particles including a first plurality of particles having a greater carbon to ash weight ratio than the second plurality of particles; de-energizing a first zone of the electrostatic precipitator and collecting a plurality of particles that exit the precipitator from the first zone, the plurality of particles collected at the first zone being substantially composed of the first plurality of particles.

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