C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 11/02 (2006.01) C07C 2/06 (2006.01) C07C 29/141 (2006.01) C07C 31/125 (2006.01) C07C 41/06 (2006.01) C07C 43/04 (2006.01)
Patent
CA 2211327
The invention relates to a process for preparing di-n-butene and an alkyl tert-butyl ether from a field butane by (a) separating the field butane 1 into n-butane and isobutane, (b) dehydrogenating the n-butane 5 to give dehydrogenation mixture 7 containing n-butene, oligomerizing the n-butene to give an oligomer mixture 11 and separating di-n-butene 12 off, and (c) dehydrogenating the isobutane 15 to give a dehydrogenation mixture 17 containing isobutene and reacting the isobutene with an alkanol 20 to give an alkyl tert-butyl ether 21. In a preferred embodiment, the field butane 1, prior to the separation, is subjected to hydrogenation 2 and isomerization 3 in which a ratio of n-butane to isobutane is set in accordance with a desired ratio of the alkyl tert-butyl ether to di-n-butene.
Préparation de di-n-butène et d'un éther-oxyde d'alkyle et de tert-butyle, à partir de butane naturel, consistant à (a) séparer le butane naturel 1 en n-butane et en isobutane, (b) à déshydrogéner le n-butane 5 pour former le mélange de déshydrogénation 7 contenant le n-butène, à oligomériser le n-butène pour former le mélange oligomère 11, à séparer le di-n-butène 12, (c) à déshydrogéner l'isobutane 15 pour former un mélange de déshydrogénation 17 contenant l'isobutène et à faire réagir l'isobutène avec un alcanol 20 pour former un éther-oxyde d'alkyle et de tert-butyle 21. Dans une version privilégiée, le butane naturel 1 est soumis, avant la séparation, à l'hydrogénation 2 et à l'isomérisation 3, le rapport n-butane/isobutane étant fixé en fonction du rapport éther-oxyde d'alkyle et de tert-butyle/di-n-butène recherché.
Droste Wilhelm
Muller Richard
Nierlich Franz
Olbrich Paul
Toetsch Walter
Degussa Ag
Fetherstonhaugh & Co.
Huls Aktiengesellschaft
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