Method for producing amines

US6350911B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Michael Sander · Blankenloch, DE
• Ulrich Penzel · Lauscha, DE
• Hans Volkmar Schwarz · Waterloo, BE
• Eckhard Ströfer · Mannheim, DE
• Dieter Stützer · Marloffstein, DE
• Jörn Müller · Sickte, DE
• Markus Maurer · Gettorf, DE
• Peter Zehner · Ludwigshafen, DE
• Ekkehard Schwab · Neustadt, DE
• Ralf Böhling · Griesheim, DE
• Dominic Vanoppen · Kapellen, BE

Key dates

• Filing date: Jun 11, 2001
• Grant date: Feb 26, 2002
• Expiry date: Jun 11, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/00777
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the preparation of amines by hydrogenation of nitro compounds, which comprises carrying out the hydrogenation in a vertical reactor whose length is greater than its diameter, having a downward-facing jet nozzle arranged in the upper region of the reactor through which the starting materials and the reaction mixture are fed in, and having an outlet at any desired point of the reactor, through which the reaction mixture is fed back to the jet nozzle in an external circuit by means of a conveying means, and having flow reversal in the lower region of the reactor.