Bp Koln Gmbh

Bayer Aktiengesellschaft

Ec Erdolchemie Gmbh

Axel Gohrt

Joachim Grub

Stefan Kaminsky

Alexander Gammersbach

Hans-Joachim Kramer

Hans-Jurgen Bister

Brian Schwegler

Stefanie Konig

Stephan Muller

Tertiary alcohols can be prepared by the hydration of tertiary olefins having the same number of carbon atoms on an acidic ion exchanger using special structured multi-purpose packings for heterogeneous reactive rectification. An excellent yield and purity of the alcohol and an extended service life of the catalyst are achieved.

Process for the preparation of tertiary alcohols by the hydration of tertiary olefins in a reactive rectification using a structured multi-purpose packing

The invention relates to a process for preparing diisobutylene (DIB) from an i-butene-containing C raffinate I, in which the C stream is passed through a first hydroisomerization reactor (A) and a fractionation column (B) and is thus largely freed of 1-butene and 2-butene. It is subsequently dimerized over an acidic catalyst installed in a reactive column (E). The feed stream to this reactive column contains not only i-butene but also butanes which make the reaction temperature in the fixed bed controllable by removal of the heat of reaction. In the fractionation column (B), a side stream can be subjected to a further hydroisomerization in a reactor (C).

Process for the selective preparation of DIB from an i-butene-containing C4 stream

A process is provided which makes it possible to separate off cyclic acetals from wastewater streams to a substantial extent, by passing the wastewater stream over a heterogeneous acid catalyst.

Process for removing cyclic acetals from wastewater streams

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Cologne, Germany

Axel Gohrt