PROCESS FOR PREPARING ETHYLENE AND OTHER OLEFINS FROM AQUEOUS SOLUTIONS OF THE CORRESPONDING ALCOHOLS

The invention relates to a process for the continuous production of one or more olefins from an aqueous solution of corresponding alcohol(s) including: Providing a solid-free aqueous solution of the alcohol(s); putting the solution through a reactor, which is filled with a fixed-bed catalyst such th...

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Bibliographic Details
Main Authors SCHWEPPE, RAINER, UNKELBACH, GERD, HIRTH, THOMAS
Format Patent
LanguageEnglish
French
German
Published 03.12.2014
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention relates to a process for the continuous production of one or more olefins from an aqueous solution of corresponding alcohol(s) including: Providing a solid-free aqueous solution of the alcohol(s); putting the solution through a reactor, which is filled with a fixed-bed catalyst such that the solution comes into contact with the catalyst when flowing through the reactor at a temperature of at least 300° C. and a pressure of at least 220 bar in such a temperature/pressure combination that the alcohol(s) are reacted under supercritical conditions; and transferring a resulting two-stage mixture to a separator, in which the mixture is separated in a raw olefin gas phase and an aqueous liquid phase; wherein the catalyst is selected from among metal oxides having the properties of a Bronstedt acid, insoluble metallic or semi-metallic phosphates as well as porous materials selected from among pumice and carbon, the surface area of which is coated with inorganic acid groups.
Bibliography:Application Number: EP20130701618