Study on Hydrorefining/Hydroupgrading/Hydrodewaxing Combined Process Performance

A novel hydrorefining/hydroupgrading/hydrodewaxing combined process for clean, low freezing diesel production were studied in this paper. the catalytic performance of three hydrorefining/hydroupgrading/hydrodewaxing combined catalysts were examined on 200mL hydrogenation units using the same feedstocks, the results revealed that the sulfur contents of diesel product were less than 50μg·g-1,and all the three combined catalysts can produce-20# diesel, and HU-1 catalyst had the better hydroupgrading performance than HU-2 catalyst.