Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Reexamination Certificate
2007-08-28
2007-08-28
Caldarola, Glenn (Department: 1764)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
C208S027000, C208S062000, C208S066000, C208S108000
Reexamination Certificate
active
10429120
ABSTRACT:
A process for upgrading a hydrocarbon feedstock containing waxy components and having an end boiling point exceeding 650° F., which includes contacting the feedstock at superatmospheric hydrogen partial pressure with an isomerization dewaxing catalyst that includes ZSM-48 and contacting the feedstock with a hydrocracking catalyst to produce an upgraded product with a reduced wax content. Each catalyst is present in an amount sufficient to reduce the cloud point and the pour point of the feedstock at a conversion of greater than about 10%, and an overall distillate yield of greater than about 10% results from the process.
REFERENCES:
patent: 4975177 (1990-12-01), Garwood et al.
patent: 5084159 (1992-01-01), Abdo et al.
patent: 189648 (1986-08-01), None
Angevine Philip J.
Grove Michael T.
Helton Terry E.
Mazzone Dominick N.
Pappal David A.
Caldarola Glenn
Carter Lawrence E.
ExxonMobil Research and Engineering Company
Kliebert Jeremy J.
Singh Prem C.
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