Method for stopping a reaction during the production of aromatic amines from nitroaromatics

US9469594B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Michael Merkel · Hof, DE
• Thomas Knauf · Dormagen, DE
• Cliff Andre Peters · Marne, DE
• Thorsten Schmidt · Horgen, CH
• Karl-Heinz Wilke · Moers, DE

Key dates

• Filing date: Apr 12, 2013
• Grant date: Oct 18, 2016
• Expiry date: Apr 12, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C209/84
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a method for producing aromatic amines by the hydrogenation of aromatic nitro compounds. This method supplies aromatic nitro compounds and hydrogen to a reactor and contacts them with a hydrogenation catalyst; and stops the supply of aromatic nitro compounds and hydrogen to the reactor. The supply of aromatic nitro compounds and hydrogen to the reactor is stopped to ensure safe shutdown of the reactor.