| abstract |
A method for treating a hydrocarbon fraction with a sulfur content of at least 0.5 wt.%, An asphaltene content of at least 1 wt.%, An initial boiling point of at least 340 ° C and a final boiling point of at least 480 ° C is described. at least one fraction of deasphalted oil with a sulfur content less than or equal to 0.5 wt.% and a precipitation content less than or equal to 0.1 wt.%, including the following successive stages: a) hydroprocessing stage, b) possibly, separation stage effluent obtained as a result of stage a), c) a stage of hydroconversion of at least one part of the effluent obtained in stage a), or at least one part of the heavy fraction obtained at stage b), and possibly at least one part of the light fraction, obtained in stage b), d) stage of separation of effluent obtained in stage c), e) at least one stage of selective deasphalting of at least one part of the liquid hydrocarbon fraction obtained in stage d), f) stage of recirculation of at least one parts of the specified fraction of deasphaltiers oil obtained in stage e), above stage a) hydrotreatment and / or at the input stage c) hydroconversion. |