Mineral oils: processes and products – Chemical conversion of hydrocarbons – With subsequent treatment of products
Reexamination Certificate
2006-04-11
2006-04-11
Keys, Rosalynd (Department: 1621)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
With subsequent treatment of products
C208S095000, C208S143000, C208S145000, C585S006000, C585S259000, C585S260000, C585S275000, C585S276000, C585S277000, C585S500000, C585S800000, C585S809000, C585S841000
Reexamination Certificate
active
07025872
ABSTRACT:
Process for obtaining a hydrocarbon fraction that can be used as a feedstock of an etherification unit and that contains a small amount of diene compounds, nitrogen-containing compounds and sulfur-containing compounds, starting from an initial hydrocarbon feedstock that comprises a mixture of olefins, dienes, and nitrites as well as sulfur-containing compounds, whereby said process comprises at least the following successive stages:a) a selective hydrogenation of said initial hydrocarbon feedstock in the presence of a catalyst of group VIII of the periodic table,b) a fractionation by distillation of the effluents that are obtained from stage a) under conditions that make it possible to obtain at least two fractions includingsaid hydrocarbon fraction and that comprises a small amount of diene compounds, nitrogen-containing compounds and sulfur-containing compounds, anda heavy fraction that contains heavy hydrocarbons and the majority of the nitrogen-containing compounds and sulfur-containing compounds obtained from the hydrogenation of stage a).
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Forestiere Alain
Magne-Drisch Julia
Marchal-George Nathalie
Picard Florent
Institut Francais du Pe'trole
Keys Rosalynd
Millen White Zelano & Branigan P.C.
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