Delayed coking process
AssigneeChevron Research Company
InventorArnold L. Grossberg
Life of this patent
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Abstract
A catalytic delayed coking process is disclosed that gives increased distillate yield and reduced coke make. The process involves adding small amounts of cracking catalyst and hydrogen to the hydrocarbon feedstock before it is charged to the coking drum. The catalyst settles out in the coke and does not affect the utility of the coke.
Claims4
In a delayed coking process comprising heating a hydrocarbon feedstock to cracking temperatures and thereafter introducing the heated feedstock into a coking drum under delayed coking conditions wherein the heated feedstock soaks in the drum in its contained heat which is sufficient to convert the feedstock to cracked vapors and coke, the improvement comprising adding a cracking catalyst in an amount in the range of about 0.1 to about 3% by weight based on the hydrocarbon feedstock and hydrogen in an amount in the range of about 50 to about 500 SCF per barrel of the hydrocarbon feedstock to the feedstock thereby causing an increase in the distillate yield from the process.
Dependencies are inferred from the claim text.