C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 6/04 (2006.01) C07C 7/00 (2006.01) C07C 7/10 (2006.01) C07C 7/148 (2006.01) C07C 7/163 (2006.01) C07C 11/10 (2006.01) C07C 11/107 (2006.01)
Patent
CA 2313850
A process for preparing C5-/C6-olefins from an olefinic starting stream comprising C4-hydrocarbons comprises a) ~carrying out a metathesis reaction in the presence of a metathesis catalyst comprising at least one compound of a metal of transition group VIb, VIIb or VIII of the Periodic Table of the Elements so as to convert the 1-butene, 2-butene and isobutene present in the starting stream into a mixture of C2-C6-olefins and butanes, b) ~firstly fractionating the resulting product stream by distillation to give a low boiler fraction A comprising C2-C4-olefins and butanes or C2- C3-olefins, which is discharged, and a high boiler fraction comprising C4-C6-olefins and butanes, c) ~subsequently fractionating the high boiler fraction from b) by distillation to give a low boiler fraction B comprising butenes and butanes, an intermediate boiler fraction C comprising pentene and methylbutene and a high boiler fraction D comprising hexene and methylpentene, d) ~where all or part of the fractions B and/or C are recirculated to the process step a) and the fraction D is discharged as product.
Huber Sylvia
Schulz Michael
Schulz Ralf
Schwab Peter
Basf Aktiengesellschaft
Huber Sylvia
Robic
Schulz Michael
Schulz Ralf
LandOfFree
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