Apparatus for and process of converting carbonaceous materials c

Details Apparatus for and process of converting carbonaceous materials c Apparatus for and process of converting carbonaceous materials c

1976-03-08

1977-05-31

Lindsay, Jr., Robert L.

Gas: heating and illuminating

Generators

Cupola

48 77, 48197R, 48202, 110 1J, 110 28J, 201 31, 209 11, 252373, C10J 320, C10K 120

Patent

active

040266796

ABSTRACT:
A process for the conversion of carbonaceous materials containing sulphur to an essentially sulphur-free combustible gas by gasification, comprising partially gasifying the carbonaceous material in a first circulating fluid bed by supplying to said zone adjusted streams of the carbonaceous material, finely-divided CaO-containing material and steam, separating solid materials from streams of gases and solid materials leaving said reaction zone, subjecting an adjusted fraction stream of said solid materials to separation of ashes and sulphur purification and then returning this stream to the reaction zone, transferring the rest of the solid materials to a second circulating fluid bed, wherein the solid materials by partial combustion with an adjusted stream of gases containing molecular oxygen is heated to an overtemperature which is adjusted by controlling the content of oxygen of the gas in such a way that the materials after separation from the reaction gases and recirculation to the first fluid bed satisfies the heat requirement for the gasification therein. The invention also covers an apparatus for carrying out said process.

REFERENCES:
patent: 3261463 (1966-07-01), Eveson et al.
patent: 3481834 (1969-12-01), Squires
patent: 3599610 (1971-08-01), Spector
patent: 3625354 (1971-12-01), Heitmann
patent: 3692506 (1972-09-01), Johnson
patent: 3736233 (1973-05-01), Sass et al.
patent: 3847563 (1974-11-01), Archer et al.
patent: 3870480 (1975-03-01), Moss
patent: 3957459 (1976-05-01), Mitchell et al.

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