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US 9,803,147 B2Granted
Method for making middle distillates and a heavy vacuum gas oil FCC feedstock
AssigneeChevron U.S.A. Inc.
InventorsSubhasis Bhattacharya, Ujjal Kumar Mukherjee, Marvin I. Greene
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Abstract
The present invention is directed to a refining process for producing hydroprocessed distillates and a heavy vacuum gas oil (HVGO). The process produces middle distillates that have reduced nitrogen and sulfur content, while simultaneously producing a 900° F.+ (482° C.+) HVGO stream useful as a fluidized catalytic cracking (FCC) unit feedstock.
Claims13
A process for making at least one middle distillate and a heavy vacuum gas fluidized catalytic cracking feedstock, comprising:
- hydrocracking a hydrocarbonaceous feedstock at a 20 to 30% conversion rate to produce a first stage hydrocracked effluent;
- distilling the hydrocracked feedstock by atmospheric distillation in an atmospheric distillation unit to form at least one middle distillate fraction and an atmospheric bottoms fraction;
- further distilling the atmospheric bottoms fraction by vacuum distillation in a vacuum distillation unit to form a side-cut vacuum gas oil fraction and a heavy vacuum gas oil fluidized catalytic cracking (FCC) feedstock;
- passing the side-cut vacuum gas oil fraction directly to a second stage hydrocracker and hydrocracking the side-cut vacuum gas oil fraction to form a second stage hydrocracked effluent;
- passing the heavy vacuum gas oil FCC feedstock directly to an FCC unit;
- and
- combining the second stage hydrocracked effluent with the first stage hydrocracked effluent.
4 more elements
Dependencies are inferred from the claim text.