摘要 |
On the basis of the finding that hydrogenation reactivity with aromatics, as well as desulfurization reactivity, is closely correlated with the distillation properties of feedstock straight-run gasoil, the disclosed process is provided for separating the straight-run gasoil effluent from a crude distillation unit so as to afford a feedstock having properties good enough to be treated in a post-hydrodesulfurization process, thereby not only utilizing pre-existing hydrodesulfurizaion units to the maximum, but also significantly reducing aromatic levels. The process allows the production of diesel fuel meeting the WWFC category-4 standard, requiring the minimum possible investment in new facilities. |