Process for dearomatization of petroleum distillates

摘要

The invention concerns a process for dearomatization of petroleum distillates, wherein a distillate feedstock containing aromatic compounds is fed into a hydrotreating process unit, in which its aromatic compounds are hydrogenated. According to the invention at least two of the following petroleum distillates a to c are hydrogenated in the same hydrotreating process unit: a) a solvent cut having a boiling point range of 60 to 270 DEG C, b) a middle distillate having a boiling point range of 180 to 320 DEG C, and c) a naphtha having a a boiling point range of 20 to 190 DEG C. The temperature rise in the reaction zone is limited to less than 60 DEG C by cooling the effluent of the reaction zone and recycling a part of it to the reaction zone. By means of the invention it is possible substantially to reduce investment costs for dearomatization units, because several different kinds of products can be treated in the same unit.