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US 5,853,569 AGranted
Method for manufacturing a process oil with improved solvency
AssigneeExxon Research & Engineering Co.
InventorsKeith K. Aldous, Jacob Ben Angelo, Joseph Philip Boyle
Life of this patent
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Abstract
A method for producing a process oil is provided in which a napthenic rich feed is enriched with an aromatic extract oil. The enriched feed is then subjected to a solvent extraction thereby providing a process oil.
Claims8
A method for producing a process oil comprising:
- hydrotreating a naphthenic rich feed at a temperature of from about 300.degree. C. to about 375.degree. C., a hydrogen partial pressure of 300 to 2500 psia and a space velocity of 0.1 to 2 (v/v/hr) to provide a hydrotreated feed;
- removing hydrogen sulfide and ammonia from the hydrotreated feed to provide in a stripped hydrotreated feed;
- adding an aromatic extract oil to the stripped hydrotreated feed in a volume ratio ranging between about 10% to 90% to provide an enriched feed;
- and,
- solvent extracting the enriched feed to provide a process oil.
2 more elements
A method for producing a process oil comprising:
- hydrotreating a napthenic rich feed at a temperature of from about 300.degree. C. to about 375.degree. C., a hydrogen partial pressure of 300 to 2500 psia and a space velocity of 0.1 to 2 (v/v/hr) to provide a hydrotreated feed;
- removing hydrogen sulfide and ammonia from the hydrotreated feed to provide a stripped feed;
- dividing the stripped feed into a first part and a second part;
- solvent extracting the first part with an aromatic extraction solvent to provide an extract;
- removing the solvent from the extract to provide an aromatic extract oil;
- adding the aromatic extract oil to the second part to provide an enriched feed;
- and
- solvent extracting the enriched feed to provide a process oil.
5 more elements
Dependencies are inferred from the claim text.