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The experimental study of supercritical extraction of the organic substance (OS) from various genetic types of oil shale in a wide range of state parameters was carried out. The dependences of the liquid yield on the М.Н. Дадашев, Д.Г. Филенко, Н.М. Булаева, Р.Ф. Джафаров, Р.Р. Мурсалов 146 ХИМИЧЕСКАЯ ТЕХНОЛОГИЯ temperature at pressure values varying from 3 to 20 MPa were identified. It was found that pressure has a significant effect on the overall degree of organic substance conversion and the liquid yield. With an increase in reactor pressure, the dissolving capacity and the solvent penetration depth increase which contributes to full extraction of soluble components of the organic substance from the porous structure. The results of the study of extraction of the organic substance from oil shale showed that with an increase in pressure the degree of organic substance conversion and the total liquid yield increase by 49–73% and 1,9–3,9 times respectively. The article concludes that variation in thermodynamic parameters of the supercritical fluid extraction process can be used to increase the degree of OS conversion and the liquid yield.

Experimental study of extraction of organic substances from solid fuel in a wide range of state parameters, including a critical area