Process for preparing aromatic amines in a fluidized-bed reactor

US8044244B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Lothar Seidemann · Ludwigshafen am Rhein, DE
• Lucia Koenigsmann · Stuttgart, DE
• Christian Schneider · Mannheim, DE
• Ekkehard Schwab · Neustadt, DE
• Dieter Stuetzer · Dudenhofen, DE
• Celine Liekens · Ekeren, BE

Key dates

• Filing date: Sep 14, 2007
• Grant date: Oct 25, 2011
• Expiry date: Jul 31, 2028

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/32475
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for preparing aromatic amines by catalytic hydrogenation of the corresponding nitro compound in a fluidized-bed reactor, in which a gaseous reaction mixture comprising the nitro compound and hydrogen flows from the bottom upward through a heterogeneous particulate catalyst forming a fluidized bed, wherein the fluidized bed is provided with internals which divide the fluidized bed into a plurality of cells arranged horizontally in the fluidized-bed reactor and a plurality of cells arranged vertically in the fluidized-bed reactor, with the cells having cell walls which are permeable to gas and have openings which ensure an exchange number of the heterogeneous, particulate catalyst in the vertical direction in the range from 1 to 100 liters/hour per liter of reactor volume, is proposed.