Process for the production of methyl tert.-butyl ether (MTBE) and of hydrocarbon raffinates substantially freed from i-butene and from methanol

US4503265A · kind A · utility

Assignee

• EC Erdolchemie GmbH · DE

Inventors

• Bernhard Schleppinghoff · Dormagen, DE
• Martin Becker · Kiel, DE

Key dates

• Filing date: Nov 18, 1982
• Grant date: Mar 5, 1985
• Expiry date: Nov 18, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C41/42
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

In the reaction of methanol and of i-butene which is contained in a hydrocarbon mixture on an acid cation exchange material to give methyl tert.-butyl ether (MTBE), methanol and i-butene can be used in essentially equimolar amounts if simultaneously to the distillative separation of the etherification mixture into its constituents this etherification mixture is passed into a secondary reaction. To do this, the etherification mixture is fed into a distillation column and from above the feed-in point a liquid distillate stream is taken off and passed in a secondary reactor over an acid cation exchange material. The mixture leaving the secondary reactor is returned below its take-off point.