Process and installation for conversion of heavy petroleum fractions in a boiling bed with integrated production of middle distillates with a very low sulphur

摘要

Process and installation for conversion of heavy petroleum fractions in a boiling bed with integrated production of middle distillates with a sulphur content of very low.The present invention relates to a process and a plant for the treatment of a supply of heavy oil, of which at least 80% by weight have a boiling point greater than 340 198 C, with which the process comprises the following stages: (a) in a reactor hidroconversu00e3o The boiling bed operating with a high flow rate of liquid and gas.Conversion in% by weight of a fraction having a boiling point greater than 540198 C and from 10 to 98% by weight; (b) the separation of the effluent obtained from stage (a) in a gas containing hydrogen and H ~ 2 ~ s.A fraction comprising diesel oil and optionally a fraction that is heavier than the fraction of diesel and a naphtha hydrotreating; (c) through contact with at least a catalyst of at least a fraction comprising the gas obtained in the stage (b); (d) separation of Eph. Luente obtained at the end of the stage (c) in a gas containing hydrogen and at least one fraction of diesel fuel having a contentSulphur content of less than 50 ppm, preferably less than 20 ppm and more preferably less than 10 ppm, the stage of hidroconversu00e3o (a) being conducted in a pressure P1 and the stage of T (c) being conducted in a pressure P2, the difference 30 P = P1 - P2. As for me In the 3 MPa.The supply of hydrogen to the stages of hidroconversu00e3o (H) and (c) being ensured by a compression system only with N stages.