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US 10,253,269 B2Granted
Method to migrate fouling of a vacuum wash bed
AssigneeMarathon Petroleum Company LP
InventorsGregory A. Cantley, James F. Johnson, Jeff Sexton
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Abstract
Fluid medium such as light cycle oil, water, FCC slurry and decanted oil, improve this method for vacuum distillation of a petroleum product. The method may be used in the petroleum refining industry for fractionating of petroleum base stock in a vacuum column. The fluid medium prevents the formation of thermoset polymers and the resultant fouling of the wash beds in the vacuum column.
Claims6
A method of preventing buildup, fouling, and hardening of thermal set polymer in a vacuum distillation column wash bed, comprising the steps of:
- delivering a light cycle oil solvent (LCO) to the wash bed to hinder the build up of a soft polymer in the wash bed;
- preventing the soft polymer from hardening into a permanent foulant in the wash bed;
- and
- removing the soft polymer from the wash bed and vacuum distillation column.
1 more element
Dependencies are inferred from the claim text.