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US 5,288,390 AGranted
Polycyclic aromatic ring cleavage (PARC) process
AssigneeSun Company, Inc. (R&M)
InventorVincent A. Durante
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Abstract
A process for the processing or upgrading of heavy oil fractions containing polynuclear aromatics is disclosed. The process comprises selectively oxidizing a feedstock under low severity conditions in a multi-phase system, wherein one phase is an aqueous and contains water-soluble catalyst, deoxygenating that product followed by hydroprocessing to yield a substantially mononuclear product.
Claims27
A low severity process for upgrading hydrocarbonaceous feedstock containing polynuclear aromatic compounds, comprising the steps of:
- a. selectively oxidizing said feedstock under mild oxidation conditions in a multi-phase system, including at least one aqueous phase, using a water-soluble oxidation catalyst, said catalyst chosen to catalyze the selective oxygenation of non-terminal aromatic rings of polynuclear aromatic compounds in said feedstock;
- b. deoxygenating the product of said oxidation;
- and
- c. hydroprocessing the product of said deoxygenation to yield substantially mononuclear aromatic products.
1 more element
Dependencies are inferred from the claim text.