Isomerization of hydrocarbons

C - Chemistry – Metallurgy – 07 – C

Patent

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C07C 5/13 (2006.01) C07C 5/27 (2006.01) C10G 35/06 (2006.01) C10G 35/085 (2006.01) C10G 45/62 (2006.01)

Patent

CA 2350481

An isomerization process for converting an isomerization feed stream containing alkanes having 4 carbon atoms to 10 carbon atoms per molecule and cycloalkanes having 5 carbon atoms to 10 carbon atoms per molecule to at least one product hydrocarbon isomer. The isomerization feed stream, which contains at least one feed hydrocarbon and hydrogen, is contacted in an isomerization zone at effective isomerization conditions with a catalyst where deactivation of such catalyst occurs in the isomerization zone. The isomerization process includes the presence of an additive in the isomerization feed stream. The concentration of the additive is sufficient to alleviate or diminish the deactivation of the catalyst and to maintain a substantially constant conversion of the at least one feed hydrocarbon to the at least one product hydrocarbon isomer at effective isomerization conditions.

On décrit un procédé d'isomérisation qui permet de transformer une charge d'isomérisation contenant des alcanes comprenant de 4 à 10 atomes de carbone par molécule et des cycloalcanes comprenant de 5 à 10 atomes de carbone par molécule en au moins un isomère d'hydrocarbure. La charge d'isomérisation, qui contient au moins une charge d'hydrocarbure et d'hydrogène, est mise en contact dans une zone d'isomérisation dans des conditions efficaces d'isomérisation avec un catalyseur où ce catalyseur est désactivé. Le procédé d'isomérisation inclut la présence d'un additif dans la charge d'isomérisation. La concentration de l'additif est suffisante pour atténuer ou réduire la désactivation du catalyseur et pour maintenir une conversion sensiblement constante de la charge d'hydrocarbure ou des charges d'hydrocarbure en au moins un isomère d'hydrocarbure dans des conditions d'isomérisation efficaces.

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