C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 7/08 (2006.01)
Patent
CA 2330137
The invention relates to a method for separating a C4 hydrocarbon mixture containing essentially 1,3 butadiene, butenes, butanes and other C4 hydrocarbons into at least 4 fractions as follows: a) fraction (a) consisting essentially of 1,3 butadiene; b) fraction (b) consisting essentially of butenes; c) fraction (c) consisting essentially of butanes; and d) one or more fractions (d) consisting essentially of 1,3 butadiene and the other C4 hydrocarbons. According to said method, the C4 hydrocarbon mixture is separated by extractive distillation using N-methyl-2-pyrrolidinone or an aqueous solution of N-methyl-2- pyrrolidinone (NMP).
L'invention concerne un procédé pour séparer un mélange d'hydrocarbures C4 contenant principalement du 1,3-butadiène, des butènes, des butanes, et d'autres d'hydrocarbures C4, en au moins 4 fractions: a) la fraction (a) étant principalement constituée de 1,3-butadiène, b) la fraction (b) étant principalement constituée de butènes, c) la fraction (c) étant principalement constituée de butanes, d) une ou plusieurs fractions (d) étant principalement constituées de 1,3-butadiène et des autres d'hydrocarbures C4, par distillation extractive au moyen de N-méthyl-2-pyrrolidinone ou d'une solution aqueuse de N-méthyl-2-pyrrolidinone (NMP).
Kindler Klaus
Puhl Hubert
Basf Aktiengesellschaft
Robic
LandOfFree
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