Selective separation of Heavy Coker Gas Oil

摘要

Embodiments of the invention are directed to the improvement of the design of coker systems and processes in order to improve the yields and separation of heavy coker gas oils derived therefrom.

主权项

1. A method of separating coker drum vapors, comprising:
introducing coker drum vapors into a flash zone of a coker fractionating column; removing a heavy coker gas oil stream from the coker fractionating column; processing the heavy coker gas oil stream with an extactor to remove contaminants; and wherein the processing the heavy coker gas oil stream creates an output feed stream, an amount of which is recycled to the coker fractionating column, the output feed stream comprising: an extra heavy coker gas oil stream containing contaminants rejected from the heavy coker gas oil stream that is recycled back to a feed section of the coker fractionating column; and a lighter heavy coker gas oil stream that is sent downstream to a vacuum gas oil conversion unit.