Spouted bed heating of solids for coal gasification

Details Spouted bed heating of solids for coal gasification Spouted bed heating of solids for coal gasification

1982-12-06

1987-11-03

Richman, Barry S.

Gas: heating and illuminating

Processes

Coal

48206, 201 12, C10J 354

Patent

active

047041382

ABSTRACT:
In a coal or coal char gasification system using hot recycled inert heat transfer medium (IHTM) solids, the heat transfer medium and some of the unreacted or ungasified char are passed through a spouted-bed reactor. In the spouted-bed reactor, the unreacted char is burned in a way that more efficiently reheats the heat transfer medium and reduces fusion, agglomeration, plugging, fouling and erosion problems. These advantages are provided by the fact that only a central spout of solids is fluidized and the fact the solids undergo a systematic cyclic mechanism where there is greater contact between the hot char and IHTM solids. The spouted-bed produces a hydrodynamic system which is substantially different from conventional gas-solid combustor configurations, especially fluidized combustors.

REFERENCES:
patent: B541376 (1976-02-01), Chen et al.
patent: 2786280 (1957-03-01), Gishler et al.
patent: 3912465 (1975-10-01), Kunii et al.
patent: 4125453 (1978-11-01), Tamm et al.
patent: 4312639 (1982-01-01), Johnson

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