Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Reexamination Certificate
2008-05-13
2008-05-13
Caldarola, Glenn (Department: 1797)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
C208S027000, C208S097000
Reexamination Certificate
active
10450400
ABSTRACT:
A process for production of very high-quality base oils, and simultaneous production of high-quality middle distillates, comprises the successive stages of hydroisomerization and catalytic dewaxing. The hydroisomerization takes place in the presence of a catalyst containing at least one noble metal deposited on an amorphous acid support, the metal dispersion being less than 20%. The support is preferably an amorphous silica-alumina. The catalytic dewaxing takes place in the presence of a catalyst containing at least one hydrodehydrogenating element (Group VIII) and at least one molecular sieve chosen from ZBM-30, EU-2, and EU-11.
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Benazzi Eric
Cseri Tivadar
Gueret Christophe
Kasztelan Slavik
Marchal-George Nathalie
Caldarola Glenn
Institut Francáis du Petrole
Millen White Zelano & Branigan P.C.
Singh Prem C.
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