FIELD: oil and gas industry.
SUBSTANCE: method for producing high-quality synthetic oil from oil shales includes: preliminary preparation of oil shale by grinding thereof, removing mechanical impurities from it to fractions up to 0.5 mm and drying to constant weight, mixing obtained combustible shale with vacuum gas oil which was preliminarily subjected to electromagnetic waves with 0.1-0.8 kW power for 1-10 h and 40-60 mhz frequency, in weight ratios from 1:10 to 10:1, introducing catalyst additive including cobalt naphthenate and/or molybdenum hexacarbonyl in amount of 0.5-25 g of catalytic additive per 1 kg of mixture of vacuum gas oil and combustible shale, at that the content of cobalt naphthenate in catalytic additive is from 10 to 100 wt % and molybdenum hexacarbonyl is from 0 to 90 wt %. Homogenizing the obtained mixture in a stirring device at a temperature of not less than 60°C until the homogenous mixture is obtained, hydrogenating at temperatures 300-550°C for 0.05-6 h with excessive pressure H2, at volume ratio H2:obtained mixture from 2:1 to 20:1, thermal extraction of obtained product for 0.5-6 h with use of solvent in amount of 1-20 l per 1 kg of obtained mixture, separating the extract from dry residue and evaporating the liquid portion.
EFFECT: simplified technology by excluding the stage for thermal decomposition of shale, reduced amount of catalyst with high yield of light oil products, reduced sulfur content.
6 cl, 5 ex
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Authors
Dates
2018-01-23—Published
2016-11-23—Filed