Co-liquefaction of kukersite oil shale and pine wood in supercritical water

Abstract

Samples of kukersite oil shale and pine wood and their mixtures were liquefied with water in supercritical state in an autoclave. Chosen conditions (380 °C, 4 h) give synergy to desired direction in all feed compositions: yields of solid residue and gas with pyrogenetic water were lower 1.7-2.0 and 1.4-2.0 times, respectively, while the yield of the most expected component of oil - benzene solubles was -1.5-1.9 times higher than additive yields. Rise in co-liquefaction oil yields (y) resulted completely from the rise in the yield of the polar components and depended on the share of wood in feed (x) according to equation y = -0.0089x2 + 0.6626x + 34.846 (R2 0.97). © 2006 Estonian Academy Publishers.