PROCESS FOR THE CONVERSION OF HEAVY PETROLEUM FRACTIONS INCLUDING A BUBBLING BED TO PRODUCE MIDDLE DISTILLATES WITH LOW SULPHUR CONTENT

摘要

the invention relates to a process for the treatment of heavy oil to produce a load off diesel fuel having a sulphur content of less than 50 ppm and 10 ppm, which is more often than notthe following steps: a hydrocracking catalyst in a bubbling bed, (b) separation of the hydrogen sulfide.a distillate gas oil fraction and a cup including a fraction heavier than the gas, and (c) the cut distillate hydrotreating.(d) separation of a cutting oil to less than 50 ppm sulphur.the process operating with hydrogen), at the level of the step (c), and provide an important adjunct of the hydrogen is introduced. the step (c).advantageously the heavy fraction is sent to the catalytic cracking. the invention relates to a system used to implement the process. figure 1 release.