Two stage carbonizer

Details Two stage carbonizer Two stage carbonizer

1995-02-16

1996-04-30

Kratz, Peter

Gas: heating and illuminating

Generators

Cupola

48 63, 48 77, 201 31, 202 99, 202121, 422139, C10J 356

Patent

active

055120709

ABSTRACT:
A two stage carbonizer places as much heat as possible into the gas streams entering the carbonizer to drive off volatile matter and reduce tars and oils by thermal cracking which is enhanced by the addition of sorbent. The carbonizer operates as a fluidized bed with a combustor providing flue gas as one fluidizing medium and preheated air as the other. This allows the coal to be devolatilized and the tars and oils to be thermally cracked due to the direct contact with the coal and hot flue gas. The device is designed to operate at high pressures from about 12-20 atmospheres.

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Rehmat, A. and Goyal, A., "Advanced Staged Combustion System for Power Generation", Fluidized Bed Combustion vol. 2, ASME 1993.

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