Gaseous phase fluidized-bed reactor

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 2/01 (2006.01) B01J 8/24 (2006.01) C08F 2/34 (2006.01) C08F 110/02 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2332269

The invention relates to a gaseous phase fluidized-bed reactor for the polymerization of ethylenically unsaturated monomers. Said reactor comprises a reactor chamber (1) in the shape of a vertical tube, and preferably an equalizing zone (2) which connects to the upper part of the reactor chamber. The reactor also comprises a circulating gas line (3), a circulating gas compressor (4), and a cooling device (5). Either generally no gas distributor base or only one gas distributor base whose entire surface area of the gas inlet openings is greater than 20 % of the entire surface area of said gas distributor base is situated in the vicinity of the overflow of the reaction gas from the circulating gas line into the reaction chamber and in the lower part of the reactor chamber itself

L'invention concerne un réacteur à lit fluidisé en phase gazeuse pour la polymérisation de monomères éthyléniquement insaturés, comportant une chambre de réacteur (1) se présentant sous forme d'un tube vertical, éventuellement une zone de stabilisation (2) se raccordant à la partie supérieure de la chambre de réacteur, une canalisation de gaz circulaire (3), un compresseur à gaz circulaire (4) et un système de refroidissement (5). Dans la région de transfert du gaz de réaction de la canalisation de gaz circulaire à la chambre de réacteur, et dans la partie inférieure de la chambre de réacteur elle-même, on ne trouve généralement aucun distributeur de gaz ou bien alors un seul distributeur de gaz, la surface totale des orifices de passage de gaz de celui-ci atteignant plus de 20 % de la surface totale de ce distributeur de gaz.

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