Making an olefin product from an oxygenate

Details Making an olefin product from an oxygenate Making an olefin product from an oxygenate

C - Chemistry, Metallurgy

10

G

C10G 3/00 (2006.01)

Patent

CA 2386176

Disclosed is a method for making olefin product from an oxygenate-containing feedstock. In the method, a silicoaluminophosphate molecular sieve catalyst is contacted with the oxygenate-containing feedstock in a reactor at an average catalyst feedstock exposure index of at least 1Ø The method produces lower coke yield and provides an olefin product which is low in C1-C4 paraffin content. The invention is particularly effective in producing an olefin product having a very low propane content.

L'invention concerne un procédé de fabrication de produit oléfinique à partir d'une charge d'alimentation contenant des composés oxygénés. Ledit procédé consiste à mettre en contact avec ladite charge un catalyseur comprenant un tamis moléculaire de silicoaluminophosphate dans un réacteur à un indice moyen d'exposition de charge catalysante d'au moins 1,0. Le procédé permet un rendement en coke inférieur et donne un produit oléfinique dont la teneur en C¿1?-C¿4? paraffine est faible. L'invention se caractérise en particulier par l'efficacité de la fabrication d'un produit oléfinique à très faible teneur en propane.

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