Gasification of coal

Details Gasification of coal Gasification of coal

1977-02-08

1982-04-06

Siegel, Alan

Gas: heating and illuminating

Processes

Coal and water

252372, C10J 316, C01B 200

Patent

active

043233686

ABSTRACT:
Improvements in the known steam-iron coal gasification process. Coal and iron particles are cofluidized in a gas producing zone and agglomeration of the particles is prevented by including at least 30% and, as the temperature is raised within the operable range, 60% or even 90% or more iron in the mix. The FeO produced as a by-product is transferred to a regeneration zone where, preferably, one of two iron oxide reduction processes are utilized. One regeneration process comprises reacting the FeO in a dense fluidized bed with a mixture of CO and CO.sub.2. The other process involves cofluidizing FeO and CaO with a CO-CO.sub.2 mixture to produce iron and calcium compounds which may be separated from the iron prior to its introduction back into the gas producing zone.

REFERENCES:
patent: 3503724 (1970-03-01), Benson
patent: 3619142 (1971-11-01), Johnson

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