Improved process for the dehydrogenation of alkyl-aromatic...

Details Improved process for the dehydrogenation of alkyl-aromatic... Improved process for the dehydrogenation of alkyl-aromatic...

C - Chemistry, Metallurgy

07

C

C07C 7/04 (2006.01) C07C 7/09 (2006.01)

Patent

CA 2633215

Process for the production of vinyl-aromatic monomers which comprises: a) feeding an aromatic stream and an olefinic stream to alkylation; b) feeding the reaction product coming from the alkylation section to a first separation section; c) re-covering the mono-alkylated aromatic hydrocarbon from the first separation section; d) feeding the mono-alkylated aromatic product to a dehydrogenation section; e) cooling and condensing the reaction gases in the shell of one or more heat exchangers; f) feeding the reaction product coming from the dehydrogenation section to a second separation section; g) recovering the stream of vinyl-aromatic monomer.

L'invention concerne un procédé de fabrication de monomères vinyl-aromatiques consistant à : a) introduire un courant aromatique et un courant oléfinique dans un réacteur pour alkylation ; b) introduire le produit de réaction issu de la section d'alkylation dans une première section de séparation ; c) récupérer l'hydrocarbure aromatique mono-alkylé de la première section de séparation ; d) introduire le produit aromatique mono-alkylé dans une section de déshydrogénation ; e) refroidir et condenser les gaz de réaction dans l'enveloppe d'un ou de plusieurs échangeurs thermiques ; f) introduire le produit de réaction issu de la section de déshydrogénation dans une seconde section de séparation ; g) récupérer le courant de monomère vinyl-aromatique.

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