Method based on a fluidized-bed reactor for converting...

C - Chemistry – Metallurgy – 07 – C

Patent

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C07C 11/02 (2006.01) B01J 8/00 (2006.01) B01J 8/18 (2006.01) B01J 8/26 (2006.01) C01B 3/34 (2006.01) C07C 2/84 (2006.01) C07C 4/04 (2006.01) C07C 5/333 (2006.01) C10G 11/18 (2006.01)

Patent

CA 2235491

The invention relates to a method of converting hydrocarbons. According to the method, a gaseous or liquid hydrocarbon feed is passed into a circulating fluidized-bed reactor, wherein the feed is converted at a high temperature under the influence of particulate matter kept in a fluidized state, and the converted hydrocarbon products are removed from the reactor in a gaseous phase. According to the invention, a circulating fluidized-bed reactor (1-3; 41-43) is used having an axially annular cross section and being equipped with a multiport cyclone (14,17; 52,63) for the separation of the particulate matter from the gas-phase reaction products. The reaction space comprises an intershell riser space (L3; 50) formed between two concentrically located cylindrical and/or conical envelope surfaces. The separation of particulate matter from the gas-phase reaction products is performed by means of a multiport cyclone equipped with louvered vanes (14; 63).

L'invention concerne un procédé permettant de transformer des hydrocarbures. Selon le procédé, on fait passer une charge d'alimentation d'hydrocarbures liquides dans un réacteur à lit fluidisé circulant, dans lequel la charge est transformée à une température élevée sous l'influence d'un matériau particulaire maintenu à l'état fluidisé, puis les produits hydrocarbonés transformés sont extraits du réacteur à l'état gazeux. Selon l'invention, un réacteur à lit fluidisé circulant (1-3; 41-43), ayant une section axialement annulaire, comporte un cyclone à plusieurs entrées (14, 17; 52, 63) qui sépare le matériau particulaire des produits de réaction en phase gazeuse. L'espace de réaction comprend un espace montant (13; 50) situé entre les enveloppes, entre deux surfaces cylindriques et/ou coniques concentriques. La séparation du matériau particulaire des produits de réaction en phase gazeuse se fait au moyen d'un cyclone à plusieurs entrées doté d'ailettes à volet (14; 63).

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