Optimized introduction of the starting materials for a process for preparing aromatic amines by hydrogenation of nitroaromatics

US8835688B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Gerrit Waters · Karlsruhe, DE
• Johannes Buettner · Ruhland, DE
• Andreas Raichle · Ludwigshafen, DE
• Markus Hiller · Frankenthal (Pfalz), DE
• Peter Renze · Mannheim, DE
• Michael Herrich · Jannowitz, DE
• Helmut Rueger · Schipkau, DE
• Burkhard Hantel · Schwepnitz, DE
• Arndt Hofmann · Radebeul, DE
• Ruediger Fritz · Bernsdorf, DE
• Kathrin Richter · Dresden, DE
• Holgar Braunsberg · Senftenberg - Zły Komorow, DE
• Lothar Bruntsch · Großthiemig, DE

Key dates

• Filing date: Mar 15, 2012
• Grant date: Sep 16, 2014
• Expiry date: Mar 15, 2032

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/00761
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a process for preparing aromatic amines by hydrogenation of corresponding nitroaromatics by means of hydrogen, and also an apparatus suitable for this purpose. In particular, the invention relates to a process for preparing toluenediamine (TDA) by hydrogenation of dinitrotoluene (DNT).