Two-stage process for obtaining significant olefin yields...

C - Chemistry – Metallurgy – 07 – C

Patent

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C07C 11/02 (2006.01) C07C 4/04 (2006.01) C07C 11/167 (2006.01) C10G 9/32 (2006.01) C10G 51/02 (2006.01)

Patent

CA 2274454

A two-stage process for obtaining a substantial amount of olefinic product from a residua feedstock includes a first stage and a second stage. The first stage, having a short residence time, includes a thermal process unit containing a reaction zone (1) comprised of a horizontal moving bed of fluidized hot particles (15) which is operated at a temperature of 500-600 degrees Celsius. The second stage thermal conversion zone (2), also having a reduced residence time, is operated at a temperature of 700-1100 degrees Celsius.

Procédé d'obtention d'une quantité importante d'alcènes à partir de matières premières résiduelles, se caractérisant par une première étape et une seconde étape. La première étape, qui se caractérise par un temps de séjour court, comporte une unité de traitement thermique dotée d'une zone de réaction (1) contenant un lit fluidisé horizontal de particules chaudes fluidisées (15) qui fonctionne à une température de 500-600 ·C. La zone de conversion thermique (2) de la deuxième étape, elle aussi caractérisée par un temps de séjour réduit, fonctionne à une température située entre 700 et 1100 ·C.

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