Process for selectively producing light olefins

Details Process for selectively producing light olefins Process for selectively producing light olefins

C - Chemistry, Metallurgy

10

G

C10G 11/05 (2006.01)

Patent

CA 2390957

The invention is related to a catalyst and a process for selectively producing light (i.e., C2-C4) olefins from a catalytically cracked or thermally cracked naphtha stream. The naphtha stream is contacted with a catalyst containing from about 10 to 50 wt.% of a crystalline zeolite having an average pore diameter less than about 0.7 nanometers at reaction conditions. The catalysts do not require steam activation.

L'invention concerne un catalyseur et un procédé permettant de produire sélectivement des oléfines légères (C¿2?-C¿4?) à partir d'un flux naphta à craquage catalytique ou thermique. Le flux est mis en contact avec un catalyseur renfermant entre environ 10 et 50 %, en poids, de zéolithe cristalline dont les pores ont un diamètre moyen inférieur à environ 0,7 nanomètre dans les conditions de la réaction. Ce type de catalyseur ne nécessite aucune activation à la vapeur.

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