Method and device for treating a c4 fraction

Details Method and device for treating a c4 fraction Method and device for treating a c4 fraction

C - Chemistry, Metallurgy

07

C

C07C 11/167 (2006.01) B01D 3/14 (2006.01) B01D 3/40 (2006.01) C07C 7/00 (2006.01) C07C 7/08 (2006.01) C07C 7/163 (2006.01) C10G 70/00 (2006.01) C10G 70/02 (2006.01)

Patent

CA 2408325

The invention relates to a method for treating a C4 fraction, comprising the following steps: extractive distillation (I), selective hydrogenation on a heterogeneous catalyst (II), a stream of crude 1,3-butadiene resulting from steps (I) and (II); and distillation of said stream of crude 1,3-butadiene in order to obtain pure 1,3-butadiene (III). Steps I and II take place in a single column or in thermally coupled columns and step III is carried out in a second column.

L'invention concerne un procédé pour traiter une fraction C4, comprenant les opérations suivantes : - distillation extractive (I), - hydrogénation sélective sur un catalyseur hétérogène (II), un courant de butadiène-1,3 brut résultant des opérations (I) et (II), et - distillation du courant de butadiène-1,3 brut pour obtenir du butadiène-1,3 purifié (III). Les opérations (I) et (II) sont effectuées dans la même colonne ou dans des colonnes thermiquement couplées et l'opération (III) est réalisée dans une seconde colonne.

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