Solvent treatment of coal for improved liquefaction
Solvent-refining of coal
Staged heating by oxidation of carbonaceous material
Staged temperature hydrogen-donor coal liquefaction process
Staged turbulent bed retorting process
Supercritical multicomponent solvent coal extraction
Supercritical solvent coal extraction
Surfactant-assisted liquefaction of particulate carbonaceous sub
System for transferring a slurry of hydrocarbon-containing solid
Thermal cracking of retort oil
Thermal flashing of carbonaceous materials
Time phased alternate blending of feed coals for liquefaction
Treatment of bituminous schists
Treatment of coal by alkylation or acylation to increase liquid
Treatment of coal liquefaction effluent
Treatment of coal to increase yields and improve physical charac
Two stage liquefaction of coal
Two-stage centrifugal dedusting process
Two-stage coal liquefaction
Two-stage coal liquefaction process