Efficient method for improved coker gas oil quality
First Claim
Patent Images
1. A delayed coking process comprising the following steps:
- introducing coke drum vapors into a flash zone of a fractioning column of a delayed coking unit;
removing a heavy coker gas oil stream from the fractionating column via a heavy coker gas oil draw in the fractionating column;
withdrawing at least a portion of the heavy coker gas oil stream as an end product;
introducing at least a portion of the heavy coker gas oil stream into the fractionating column; and
introducing a remaining portion of the heavy coker gas oil stream into at least one heat exchanger, wherein upon exiting the heat exchanger the remaining portion of the heavy coker gas oil stream is divided into a first stream and a second stream.
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Abstract
An efficient delayed coking process improvement for producing heavy coker gas oil of sufficient quality to be used as hydrocracker feedstock.
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Citations
14 Claims
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1. A delayed coking process comprising the following steps:
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introducing coke drum vapors into a flash zone of a fractioning column of a delayed coking unit; removing a heavy coker gas oil stream from the fractionating column via a heavy coker gas oil draw in the fractionating column; withdrawing at least a portion of the heavy coker gas oil stream as an end product; introducing at least a portion of the heavy coker gas oil stream into the fractionating column; and introducing a remaining portion of the heavy coker gas oil stream into at least one heat exchanger, wherein upon exiting the heat exchanger the remaining portion of the heavy coker gas oil stream is divided into a first stream and a second stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification