Reduction of coker furnace tube fouling in a delayed coking process
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United States of America Patent
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Aug 7, 2001
Grant Date -
N/A
app pub date -
Aug 9, 1999
filing date -
Aug 9, 1999
priority date (Note) -
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Abstract
In a delayed coking process, furnace tube fouling is minimized by including a measured amount of full boiling range heavy gas oil as an additive in the furnace feed, preferably by forced recycle from a heavy gas oil stream. An additive is preferably supplied directly to individual furnace tubes by multiple circumferential injection upstream of each tube receiving the additive.
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