Isomerization method of hydrocarbons and solid acid catalyst...

C - Chemistry – Metallurgy – 10 – G

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C10G 45/60 (2006.01)

Patent

CA 2319534

A method of isomerization of hydrocarbons that does not require introduction of a chlorine compound in the process of isomerization of hydrocarbons and that uses a catalyst of high activity, as well as an isomerization device for performing the same are provided. According to the isomerization method of the present invention, isomerized hydrocarbon is obtained by bringing a solid acid catalyst comprising a support, which comprises portions made of zirconia and/or hydrated zirconia, and a sulfureous component supported on this support into contact with starting hydrocarbons having a water concentration of 5 ppm or less, preferably 1 ppm or less, in terms of the weight of the water in the presence of hydrogen. It is preferred that the solid acid catalyst comprise one or more metal components selected from Group 8, Group 9, and Group 10 and/or that the support comprise portions made of zirconia and/or hydrated zirconia and portions made of aluminum and/or hydrated alumina. The isomerization device comprises a dehydration device for dehydrating the starting materials, a catalytic reactor charged with the above-mentioned solid acid catalyst, a separation device for separating the product into hydrogen to be recycled and hydrocarbon product, and a compressor for compressing the recycled hydrogen and feeding it to the catalytic reactor.

L'invention concerne un procédé d'isomérisation d'un hydrocarbure, ce procédé consistant tout d'abord à prendre un catalyseur acide solide, qui renferme un excipient dont une partie contient de la zircone et/ou de la zircone hydratée porteuse d'acide sulfurique, puis à mettre ce catalyseur en présence d'un corps hydrocarboné dont la teneur en eau est inférieure ou égale à 5 ppm en poids, et de préférence inférieure ou égale à 1 ppm. Ce procédé permet ainsi de produire des hydrocarbures isomérisés. Cette invention concerne également un système permettant de mettre en oeuvre ce procédé d'isomérisation, qui ne nécessite aucune introduction d'un composé contenant du chlore au cours de l'isomérisation et emploie un catalyseur de haute activité. Ce système d'isomérisation comprend un appareil de déshydratation pour ledit corps hydrocarboné, une cuve de réaction catalytique destinée à contenir le catalyseur susmentionné, un séparateur conçu pour séparer un produit de la réaction sous forme d'hydrogène destiné à être recyclé et d'un produit hydrocarboné, et enfin un compresseur permettant de comprimer l'hydrogène recyclé pour ensuite l'amener à ladite cuve en vue d'une réaction catalytique.

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