Method for removing sulphur in conjunction with the gasification

Details Method for removing sulphur in conjunction with the gasification Method for removing sulphur in conjunction with the gasification

1982-03-11

1984-03-13

Kratz, Peter F.

Gas: heating and illuminating

Processes

Fuel mixtures

48 92, 252373, 423415A, C10J 300

Patent

active

044365292

ABSTRACT:
The invention relates to a method in the gasification of sulphur-containing carbonaceous material using metal smelts. When gasifying such carbonaceous material in a metal smelt, the material is introduced to a gasifying reactor containing an iron and/or manganese smelt having a temperature of between 1100.degree. and 1600.degree. C., suitably 1150.degree.-1250.degree. C., the smelt being substantially saturated with respect to sulphur and carbon. The carbonaceous material is oxidized to carbon monoxide and the sulphur content forms a matte phase containing a high percentage of sulphur, which phase is tapped off. Residual non-combustible material is collected as a slag on the surface and is removed together therewith. If so desired, the matte can be granulated and roasted to recover the sulphur and metal contents. Carbonaceous material incorporating pyrolysible constituents is suitably pyrolysed in a pyrolysis medium at a temperature of between 450.degree.-800.degree. C. prior to the gasification reaction, the temperature during the pyrolysis process being maintained, by circulating the pyrolysis medium between pyrolysis and gasification and optional combustion of carbon monoxide gas formed.

REFERENCES:
patent: 2110067 (1938-03-01), Hewer
patent: 2700018 (1955-01-01), Gilbert
patent: 3155492 (1964-11-01), Udy
patent: 3533739 (1970-10-01), Pelezorski et al.
patent: 3966583 (1976-06-01), Cramer
patent: 4187672 (1980-02-01), Rasor
patent: 4345990 (1982-08-01), Fahlstrom et al.
patent: 4356030 (1982-10-01), Halpin et al.

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