Method and equipment for gasification of coal

Details Method and equipment for gasification of coal Method and equipment for gasification of coal

1984-10-22

1987-09-29

Kratz, Peter

Gas: heating and illuminating

Processes

Coal and oil

48200, 48203, 48206, C10J 354

Patent

active

046966781

ABSTRACT:
A method for the gasification of coal in a fluidized bed gasifier to improve gasification efficiency comprising the steps of introducing coal into the thermal cracking zone of a fluidized bed gasifier, thermally cracking and partially combusting the coal in said gasifier, recovering a fluid product gas containing fine particles therein from the fluidized bed gasifier, separating the fine particles as char from the first product gas, gasifying said recovered fine char particles at a temperature higher than its melting point in a high temperature gasifier to produce ash and a second product gas having H.sub.2 and CO as its main components, recovering the ash as a slag and feeding the second product gas containing H.sub.2 and CO to the coal feeding position of the fluidized bed gasifier in the thermal cracking zone.

REFERENCES:
patent: 2677603 (1954-05-01), Van Loon
patent: 2729552 (1956-01-01), Nelson et al.
patent: 2803530 (1957-08-01), Ludeman
patent: 3454383 (1969-07-01), Pirsh et al.
patent: 4113615 (1978-09-01), Gobarty

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