Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – By addition of entire unsaturated molecules – e.g.,...
Reexamination Certificate
2008-03-04
2008-03-04
Caldarola, Glenn A. (Department: 1764)
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
By addition of entire unsaturated molecules, e.g.,...
C585S314000, C585S329000
Reexamination Certificate
active
07339086
ABSTRACT:
A process is described for the hydrogenation of olefinic streams containing sulfurated compounds, obtained starting from hydrocarbon cuts containing isobutene (by means of selective dimerization), characterized by fractionating said streams in one or more distillation columns and hydrogenating separately the two fractions obtained. The stream at the head, with a minimum content of sulfurated compounds, is hydrogenated with conventional catalysts based on nickel or noble metals (Platinum and/or Palladium), extremely active but also very sensitive to sulfur, whereas the bottom of the column, rich in sulfurated compounds, is treated with bimetallic catalysts (for example Ni/Co and/or Ni/Mo), less active but not deactivated by sulfur.
REFERENCES:
patent: 4367356 (1983-01-01), Ward
patent: 4528411 (1985-07-01), Hutson, Jr.
patent: 5482616 (1996-01-01), Brahma et al.
patent: 5723687 (1998-03-01), Marchionna et al.
patent: 5811608 (1998-09-01), Stine et al.
patent: 6884916 (2005-04-01), Brown et al.
patent: 0 994 088 (2000-04-01), None
U.S. Appl. No. 10/745,512, filed Dec. 29, 2003, Catani et al.
Catani Roberto
Di Gerolamo Marco
Marchionna Mario
Bullock In Suk
Caldarola Glenn A.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Snamprogetti S.p.A.
LandOfFree
Process for the hydrogenation of branched olefins deriving... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the hydrogenation of branched olefins deriving..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the hydrogenation of branched olefins deriving... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2811876