| 摘要 |
FIELD: oil and gas production. ^ SUBSTANCE: invention refers to procedure and installation for processing heavy oil raw stock wherein at least 80 wt % of compounds have temperature over 340C. The procedure consists in the following stages: (a) hydraulic conversion in a reactor with a boiling layer of catalyst operating on a rising flow of liquid and gas at temperature 300- 500C with conversion 10-98 wt % of a fraction having boiling temperature above 540C; (b) division of exit flow after stage (a) into gas containing hydrogen and H2S, a fraction including benzene and, not necessarily, a fraction heavier, than the benzene fraction and the fraction of naphtha; c) hydrofining by contacting at least one catalyst and at least one fraction including benzene produced at stage (b); d) division of exit flow after stage (c) into gas containing hydrogen and at least one benzene fraction with contents of sulphur below 50 p/mln, preferably less, than 20 p/mln and more preferably less, than 10 p/mln. Stage of hydro-conversion (a) is performed at pressure P1 and stage of hydrofining (c) is performed at stage P2; difference öP=P1-P2 amounts to at least 3 MPa. Hydrogen is supplied at stage of hydro-conversion (a) and hydrofining (c) by means of one system of hydrogen compression with n steps. ^ EFFECT: reduced expenditures at maintaining rational duration of cycle of catalytic hydrofining, reduced content of sulphur. ^ 37 cl, 2 ex, 2 dwg |
