High performance process oil based on distilled aromatic extracts
AssigneeErgon, Inc.
InventorsJohn Kristopher Patrick, Craig Alan Busbea, Edward William Casserly, Howard Don Davis
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Abstract
Naphthenic process oils are made by blending one or more naphthenic vacuum gas oils in one or more viscosity ranges with a high CA content distilled aromatic extract feedstock to provide at least one blended oil, and hydrotreating the at least one blended oil to provide an enhanced CA content naphthenic process oil. The order of the vacuum distillation and blending steps may be reversed.
Claims17
A method for making naphthenic process oils, the method comprising:
- a1) vacuum distilling residual bottoms from a naphthenic crude atmospheric distillation unit to provide one or more vacuum gas oils in one or more viscosity ranges;
- or
- a2) atmospheric distilling naphthenic crude to provide one or more atmospheric gas oils in one or more viscosity ranges and residual bottoms, and vacuum distilling the residual bottoms to provide one or more vacuum gas oils in one or more viscosity ranges;
- b) blending at least one such vacuum gas oil with a high CA distilled aromatic extract feedstock to provide at least one blended oil;
- and
- c) hydrotreating the at least one blended oil to provide an enhanced CA content naphthenic process oil;
- wherein the high CA distilled aromatic extract feedstock and enhanced CA content naphthenic process oil each have greater CA content than that of a comparison oil made by similarly hydrotreating the one or more vacuum gas oils alone.
A method for making naphthenic process oils, the method comprising:
- a) blending a naphthenic vacuum gas oil having a viscosity of at least 60 SUS at 38° C. with a high CA distilled aromatic extract feedstock to provide a blended oil;
- and
- b) hydrotreating the blended oil to provide an enhanced CA content naphthenic process oil;
- wherein the feedstock and enhanced CA content naphthenic process oil each have greater CA content than that of a comparison oil made by similarly hydrotreating the naphthenic vacuum gas oil alone.
A naphthenic process oil comprising a hydrotreated blend of a) at least one naphthenic vacuum gas oil having a viscosity of at least 60 SUS at 38° C. and b) a high CA distilled aromatic extract feedstock having greater CA content than that of a comparison oil made by similarly hydrotreating the at least one naphthenic vacuum gas oil alone.
Dependencies are inferred from the claim text.