A HYDROCRACKING PROCESS INTEGRATED WITH VACUUM DISTILLATION AND SOLVENT DEWAXING TO REDUCE HEAVY POLYCYCLIC AROMATIC BUILDUP

摘要

An integrated hydrocracking, vacuum distillation and solvent deasphalting process that provides for controlling the amount of polycyclic aromatic hydrocarbons in a heavy oil recycle stream by separating a portion of the heavy oil recycle stream into various fractions in a vacuum distillation unit, and processing the various fractions in a manner, including solvent deasphalting, that allows for the control of the polycyclic aromatic hydrocarbons in the heavy oil recycle stream.