Slurry oil upgrading while preserving aromatic content
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United States of America Patent
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Jun 28, 2016
Grant Date -
Oct 9, 2014
app pub date -
Jun 19, 2014
filing date -
Jan 9, 2009
priority date (Note) -
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Abstract
Methods relating to methods for producing a needle coke precursor from slurry oil having low levels of nitrogen and sulfur. Nitrogen-containing compounds are removed by chromatography, followed by hydrotreating at relatively mild conditions that focus on the more easily-removed sulfur-containing compounds while largely preserving aromatic content of the slurry oil. The resulting needle coke precursor can be converted to a premium needle coke in a delayed coking system.
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