SUPERCRITICAL-FLUID EXTRACTION OF TURKISH LIGNITES AND OIL-SHALE WITH TOLUENE MIXTURES


EROL M., DEMIREL B., CALIMLI A., OLCAY A.

FUEL SCIENCE & TECHNOLOGY INTERNATIONAL, vol.12, no.6, pp.947-960, 1994 (SCI-Expanded) identifier identifier

Abstract

Supercritical fluid extraction (SFE) of two Turkish lignites and oil shale with toluene mixtures were investigated. Experiments were performed in a batch autoclave at 623 K. Extracts recovered from SFE were fractionated into oils, asphaltenes and preasphaltenes by solvent extraction.