Process for gasification and production of by-product superheate

Details Process for gasification and production of by-product superheate Process for gasification and production of by-product superheate

1979-07-13

1981-01-27

Kratz, Peter F.

Gas: heating and illuminating

Processes

Fuel mixtures

48206, 55 80, 122 7R, 252373, C10J 346, C10K 102

Patent

active

042473020

ABSTRACT:
Coal or other high ash containing carbonaceous solid fuel is reacted with a free-oxygen containing gas, with or without a temperature moderator, in a down-flow partial oxidation gas generator to produce a stream of raw synthesis gas, fuel gas, or reducing gas. A large portion of the combustion residue, i.e. molten slag and/or particulate solids that is entrained in the down-flowing generated gas stream is removed by gravity when the gas stream is passed through a diversion chamber. The main gas stream leaving the diversion chamber through the side outlet passes upward through a solids separation zone, optionally including gas-gas quench cooling, cyclones, filters, impingement separators, or combinations thereof. Next, most of the sensible heat in the gas stream is recovered by indirect heat exchange with boiler feed water and steam. Saturated and superheated steam are produced. In the main gas cooling zone, the hot gas stream with a substantially reduced solids content is passed serially through the tubes of two or more communicating shell-and-straight fire tube gas coolers. Saturated steam, which is produced in one, or more of said gas coolers, is superheated in another of said gas coolers.

REFERENCES:
patent: 2699384 (1955-01-01), Peery et al.
patent: 3963457 (1976-06-01), Hess
patent: 4074981 (1978-02-01), Slater
patent: 4099382 (1978-07-01), Paull et al.
patent: 4121912 (1978-10-01), Barber et al.

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