Method of operating a two-stage coal gasifier

Details Method of operating a two-stage coal gasifier Method of operating a two-stage coal gasifier

1980-11-28

1982-08-10

Bashore, Jr., S. Leon

Gas: heating and illuminating

Processes

Coal and water

48210, 48DIG4, C10J 346

Patent

active

043436277

ABSTRACT:
A method of operating an entrained flow coal gasifier (10) via a two-stage gasification process. A portion of the coal (18) to be gasified is combusted in a combustion zone (30) with near stoichiometric air to generate combustion products. The combustion products are conveyed from the combustion zone into a reduction zone (32) wherein additional coal is injected into the combustion products to react with the combustion products to form a combustible gas. The additional coal is injected into the reduction zone as a mixture (60) consisting of coal and steam, preferably with a coal-to-steam weight ratio of approximately ten to one.

REFERENCES:
patent: 3454383 (1969-07-01), Pirsh et al.
patent: 3689240 (1972-09-01), Aldridge et al.
patent: 3864100 (1975-02-01), Blaskowski
patent: 4017269 (1977-04-01), Dutz et al.
patent: 4158552 (1979-06-01), Baskowski et al.
patent: 4168956 (1979-09-01), Blaskowski

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