High performance, multi-stage, pressurized, airblown, entrained

Details High performance, multi-stage, pressurized, airblown, entrained High performance, multi-stage, pressurized, airblown, entrained

1994-11-09

1997-04-22

McMahon, Timothy

Gas: heating and illuminating

Generators

Cupola

48 69, 48203, C10J 376

Patent

active

056225342

ABSTRACT:
A high performance, multi-stage, pressurized, airblown, entrained flow coal gasifier system and a method of operating such a gasifier system for generating therewithin fuel gas from coal. The subject gasifier system includes an outer, pressure containing vessel surrounding an inner, water-cooled vessel wherein the gasification reaction, through which the fuel gas is generated from coal, takes place. The inner, water-cooled vessel embodies a first stage within which the high temperatures required for the gasification reactions to take place as well as for slagging are generated from the combustion of char, a second stage within which the char is gasified to generate the subject fuel gas, and a third stage within which coal is devolatilized to produce the char for the first stage and the second stage and with a concomitant quenching being effected of the fuel gas as the latter flows through the third stage of the inner water-cooled vessel.

REFERENCES:
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patent: 4400181 (1983-08-01), Snell et al.
patent: 4457764 (1984-07-01), Dorling et al.
patent: 4602573 (1986-07-01), Tanca
patent: 4610697 (1986-09-01), Darling et al.
patent: 4680035 (1987-07-01), Tanca
patent: 4721514 (1988-01-01), Kikuchi et al.

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