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US 4,518,484 AGranted
Metals removal with a light hydrocarbon and an organophosphorous compound
AssigneePhillips Petroleum Company
InventorsDavid P. Mann, Simon G. Kukes, Daniel M. Coombs
Life of this patent
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Abstract
The process described uses a C.sub.2 -C.sub.10 hydrocarbon solvent and an organophosphorous compound to extract metals from metal containing oils. Preferably, the extraction is performed above the critical conditions of the solvent.
Claims19
A process for treating and upgrading metal containing hydrocarbon feed streams comprising the steps of:
- (a) contacting said feed in an extraction zone with at least one hydrocarbon solvent containing from 2 to 10 carbon atoms per molecule under supercritical separation conditions in the presence of at least one organophosphorus chemical demetallizing agent at an agent to hydrocarbon weight ratio and conditions sufficient to decompose or react with porphyrin and asphaltene compounds of metals present and thereby assist in the removal of metal contaminants from the hydrocarbon feed, and
- (b) recovering from said extraction zone an overhead stream comprising hydrocarbons substantially reduced in contaminating metals content and a bottoms product comprising solvent and contaminating metals.
Dependencies are inferred from the claim text.