FIELD: chemistry.
SUBSTANCE: invention relates to method of increasing of quality of heavy or/and extra-heavy hydrocarbon, and mainly for release and increasing of hydrocarbon quality in wastes of drilling fluids. Invention describes method of increasing heavy hydrocarbon grade, which includes the following stages: use of heavy hydrocarbon; contacting of heavy hydrocarbon with solvent in conditions of grade increasing, due to which first product is obtained, which includes mixture of hydrocarbon of increased grade and solvent, and second product which includes asphaltenic waste, water and solvent, where conditions of grade increasing include gauge pressure in range from approximately 100 to approximately 350 pounds/square inch and temperature in range from approximately 30 to approximately 100°C; and supply of first product into separator for separation of hydrocarbon of increased grade from solvent.
EFFECT: invention also relates to system for increasing grade of heavy hydrocarbon.
16 cl, 4 ex, 6 tbl, 2 dwg
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