Procedure for synthesizing and purifying olefins and...

C - Chemistry – Metallurgy – 07 – C

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C07C 11/10 (2006.01) C07C 5/327 (2006.01) C07C 5/333 (2006.01) C07C 11/02 (2006.01) C07C 11/06 (2006.01) C07C 11/09 (2006.01)

Patent

CA 2239822

This invention involves a procedure for producing olefins from hydrocarbon fractions. It includes a separation stage for at least one paraffin in the said hydrocarbon fraction, a dehydrogenation stage for the said paraffin and a purification stage for the hydrogen produced during dehydrogenation, at least part of which is recycled in the dehydrogenation stage. The invention applies particularly to preparing olefins with 3 to 5 carbon atoms in their molecular structure from C3 to C5 hydrocarbon fractions that contain at least one paraffin.

La présente invention concerne un procédé de production d'oléfines à partir de coupes hydrocarbonées comprenant une étape de séparation d'au moins une paraffine contenue dans ladite coupe hydrocarbonée, une étape de déshydrogénation de ladite paraffine et une étape de purification de l'hydrogèneproduit au cours de la déshydrogénation dont au moins une partie est recyclée à l'étape de déshydrogénation. L'invention s'applique en particulier à la préparation d'oléfines ayant de 3 à 5 atomes de carbone dans leur molécule à partir de coupes hydrocarbonées C3 à C5 contenant au moins une paraffine.

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