Integrated low severity alcohol-base coal liquefaction process

Details Integrated low severity alcohol-base coal liquefaction process Integrated low severity alcohol-base coal liquefaction process

1992-05-01

1993-11-30

Morris, Theodore

Mineral oils: processes and products

By treatment of solid mineral, e.g., coal liquefaction, etc.

208403, 208415, 208419, 208428, 44620, C10G 106

Patent

active

052661890

ABSTRACT:
An improved, low severity coal liquefaction process is disclosed. In accordance with the process, coal is first decarboxylated and demineralized with hot sulfurous acid. The decarboxylated coal is then liquefied in the presence of an alcohol and an alkali metal hydroxide. In several embodiments, alkali metal-containing materials are reclaimed to produce alkali metal hydroxide for the liquefaction step. In other embodiments, the liquefaction is conducted in the presence of a relatively high-boiling diluent such as a coal-derived liquid.

REFERENCES:
patent: 3791956 (1974-02-01), Gorin et al.
patent: 4094765 (1978-06-01), Bearden, Jr. et al.
patent: 4149959 (1979-04-01), Bearden, Jr. et al.
patent: 4332668 (1982-06-01), Brunson
patent: 4401550 (1983-08-01), Urban
"Extraction of Coal through Dilute Alkaline Hydrolytic Treatment at Low Temperature and Atmospheric Pressure", by D. K. Sharma and S. K. Singh, Fuel Processing Technology, vol. 19 (1988) pp. 73-94.

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