PROCESS FOR TREATING HEAVY ASPHALTHENE-CONTAINING STOCK Russian patent published in 1994 - IPC

FIELD: organic chemistry. SUBSTANCE: process for treating a heavy asphalthene-containing stock comprising 72-95 wt % fractions and evaporating at 520 C (the final boiling temperature) comprises preheating said stock, thermally cracking it to a conversion of 39-61 wt %, separating the resulting product to isolate distillate and residual fractions and further deasphalting it to obtain asphalt and the deasphalted product. The thermocracking is carried out at 410-520 C and a pressure of 1-90 atm. The deasphalting is carried out in a C₃-C₈ paraffinic hydrocarbon solution. EFFECT: enhanced efficiency. 4 tbl