Fractionating and further cracking a c6 fraction from a...

Details Fractionating and further cracking a c6 fraction from a... Fractionating and further cracking a c6 fraction from a...

C - Chemistry, Metallurgy

10

G

C10G 11/05 (2006.01) C10G 11/14 (2006.01) C10G 11/18 (2006.01) C10G 35/095 (2006.01) C10G 35/10 (2006.01)

Patent

CA 2516082

The present invention relates to a process for selectively producing C3 olefins from a catalytically cracked or thermally cracked naphtha stream by fractionating the naphtha feed to obtain a C6 fraction and feeding the C6 fraction either in the riser downstream of the injection point for the reminder of the naphtha feed, in the stripper, and/or in the dilute phase immediately downstream or above the stripper of a process unit.

L'invention concerne un procédé de fabrication sélective d'oléfines C¿3? à partir d'un flux naphta à craquage catalytique ou thermique, par fractionnement de la charge naphta donnant une fraction C¿6? et injection de la fraction C¿6? dans la colonne de montée en aval du point d'injection pour le reste de la charge naphta, dans le rectificateur, et/ou dans la phase diluée immédiatement en aval ou en amont du rectificateur d'une unité de traitement.

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