Extraction of organic sulfur from coal by use of supercritical f

Details Extraction of organic sulfur from coal by use of supercritical f Extraction of organic sulfur from coal by use of supercritical f

1989-11-13

1992-01-14

Dees, Carl F.

Fuel and related compositions

Coal treating process or product thereof

Removal of undesirable

C10L 902

Patent

active

050806920

ABSTRACT:
Organic sulfur is removed from coal by extraction with a water/methanol/carbon dioxide mixture under supercritical conditions of temperature and pressure, i.e., at a temperature and pressure of the critical temperature and pressure, respectively. The preferred solvent used for extraction has the following composition (expressed as a mole fraction);

REFERENCES:
patent: 3660054 (1972-05-01), Rieve
patent: 4053285 (1977-10-01), Robinson
patent: 4192651 (1980-03-01), Keller
patent: 4441886 (1984-04-01), Muchmore et al.

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