Rotating fluidized bed gasifier system

Details Rotating fluidized bed gasifier system Rotating fluidized bed gasifier system

1979-11-01

1981-08-04

Kratz, Peter F.

Gas: heating and illuminating

Generators

48 63, 48 73, 48 76, 48 77, 60 3912, 60 3935, 110229, 110234, 110246, 122 11, 422139, 422145, C10J 356

Patent

active

042820090

ABSTRACT:
PCT No. PCT/US79/00929 Sec. 371 Date Nov. 1, 1979 Sec. 102(e) date Nov. 1, 1979 PCT Filed Nov. 1, 1979 PCT Pub. No. WO81/01295 PCT Pub. Date May 14, 1981
A rotating fluidized bed gasifier system especially useful in compound engines comprising an annular fluidization chamber containing a bed of carbon containing pulverulent solid materials. The chamber, which is defined by inner and outer spaced apart coaxial, cylindrical, perforated walls, rotates about the longitudinal axis of the cylinders. Steam enters the bed, which is maintained at about 1800.degree. F., through the outer perforated wall and fluidizes the particles. The steam reacts endothermically with the carbon to produce reaction product gas which exits the bed, together with unreacted steam, through the inner perforated wall. In a preferred form of the invention the bed is maintained at approximately 1800.degree. F. by combining a rotating fluidized bed combustor with the gasifier. In this embodiment compressed air and powdered coal enter the bed with the steam through the outer perforated wall. The air reacts exothermically with the fuel within the bed to generate heat for the endothermic steam-carbon reaction and to produce hot combustion gas which exit the bed, together with the reaction product gas, unreacted steam and compressed air, through the inner perforated wall.

REFERENCES:
patent: 4183208 (1980-01-01), Horgan et al.
Swithenbank, Rotating Fluidized Bed Combustor/Gasifier, University of Sheffield, 1976.

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