Basf Aktiengesellschaft

Melanie Pahl

Wolfgang Siegel

Gerd Kaibel

Werner Aquila

Matthias Kiefer

Klaus Kindler

Gerd Bohner

Udo Rheude

J&ouml;rg Therre

Ulrich Schafer-Luderssen

Ulrich Sch{umlaut Over (a)}fer-L{umlaut Over (u)}derssen

A process for recovering crude 1,3-butadiene from a Cfraction by extractive distillation using a selective solvent in a dividing wall column (TK) in which a dividing wall (T) is arranged in the longitudinal direction of the column to form a first subregion (A), a second subregion (B) and a lower common column region (C) and which is preceded by an extractive scrubbing column (K) is proposed.

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A process for obtaining pure 1,3-butadiene from crude 1,3-butadiene by distillation is carried out in a dividing wall column in which a dividing wall is located in the longitudinal direction of the column to form an upper common column region, a lower common column region, a feed section and an offtake section.

Method and device for obtaining 1,3 pure butadiene from 1,3 raw butadiene by distillation

Continuous preparation of dimethylvinylcarbinol by isomerizing prenol

Allyl alcohols are isomerized in aqueous solution in the presence of protonic acids, with the pH of the reaction mixture being adjusted to the range from 2 to 5 with an acid concentration below 0.16 mol per liter of the reaction mixture or with a buffer which comprises the protonic acid.

Isomerization of allyl alcohols

Growing community of inventors

Mannheim, Germany

Melanie Pahl