Back to results
US 6,110,358 AGranted
Process for manufacturing improved process oils using extraction of hydrotreated distillates
AssigneeExxon Research & Engineering Co.
InventorsKeith K. Aldous, Jacob B. Angelo, Joseph P. Boyle
Life of this patent
Estimating the term…
Abstract
A method for producing a process oil in which a naphthenic rich distillate is processed through a single hydrotreating stage, the hydrotreated distillate is then solvent extracted to yield a process oil which passes IP-346 and AMES screening test.
Claims10
A method for producing a process oil comprising
- extracting a hydrotreated naphthenic distillate under aromatic extraction conditions to produce a process oil having an aniline point of between about 80.degree. C. to about 120.degree. C.
A method for producing a process oil from a naphthenic rich distillate comprising:
- hydrotreating the naphthenic rich distillate in a single hydrotreating stage at temperatures of about 300.degree. C. to about 375.degree. C., a partial hydrogen pressure of 300 to 2500 psia and a space velocity of 0.1 to 2 (VJV/Hr) whereby a hydro-treated distillate, hydrogen sulfide and ammonia are formed;
- separating the hydrogen sulfide and ammonia from the hydrotreated distillate;
- and then
- extracting the hydrotreated distillate under aromatic extraction conditions sufficient to provide a process oil having an aniline point of between about 80.degree. C. to about 120.degree. C.
1 more element
Dependencies are inferred from the claim text.