The use of supercritical fluids for the extraction of natural bitumen from bituminous sands
DOI:
https://doi.org/10.18321/cpc404Keywords:
supercritical fluid, natural bitumen, bituminous sands, extraction, resinous-asphaltene components.Abstract
First time, the extraction of natural bitumen from bituminous sands of Beke and Munaily Mola deposits in a supercritical fluids’ environment was carried out. The results of one of the most effective methods for extracting natural bitumen from bituminous sands of Kazakhstan and their analysis results are presented. It also provides research to establish changes in the amounts of resinous-asphaltene components during thermal processing of bitumen. It is shown that as a result of extraction in the supercritical isopropanol the yield of distillate fractions increases by 16% and the content of resinous asphaltene components decreases by 12.37%, which is explained by the alkylating effect of supercritical fluids.
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