Apparatus and its use for oxychlorination

C - Chemistry – Metallurgy – 07 – C

Patent

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C07C 19/045 (2006.01) B01J 8/18 (2006.01) B01J 8/24 (2006.01) C07C 17/156 (2006.01)

Patent

CA 2213446

The preparation of 1,2-dichloroethane from ethylene, hydrogen chloride and oxygen or an oxygen-containing gas (oxychlorination) advantageously proceeds in a reactor having a lower delimitation for a catalyst fluid bed, a first gas inlet (distributor tubes) being arranged above the delimitation and within the catalyst fluid bed, which gas inlet contains nozzles distributed over the entire cross section of the reactor, these nozzles opening into tubes which conduct the exiting gas stream essentially in the opposite direction to the gas stream which fluidizes the catalyst, this gas stream being fed through a second gas inlet beneath the delimitation.

La production de 1,2-dichloroéthane à partir d'éthylène, de gaz hydrochlorique et d'oxygène ou d'un gaz renfermant de l'oxygène (oxychloration) s'effectue de préférence dans un réacteur présentant une délimitation inférieure pour un lit fluidisé de catalyseur. Une première conduite d'introduction de gaz (tuyaux distributeurs) (4) est située au-dessus de cette délimitation et à l'intérieur du lit fluidisé de catalyseur, ladite conduite renfermant, sur toute la section transversale du réacteur, des ajutages (5) qui débouchent dans des tuyaux (6) où le flux de gaz de sortie circule principalement à contre-courant du flux gazeux qui fluidise le catalyseur, ce flux gazeux étant acheminé sous la délimitation par l'intermédiaire d'une seconde conduite de gaz (7).

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