Reactor for thermally cracking monofunctional and polyfunctional carbamates

US7531084B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Dieter Starosta · Schwarzheide, DE
• Peter Pfab · Schwarzheide, DE
• Volker Krase · Schwarzheide, DE
• Andreas Schmidt · Schwarzheide, DE
• Matthias Kloetzer · Kröppen, DE
• Andreas Otterbach · Tervuren, BE

Key dates

• Filing date: Apr 9, 2003
• Grant date: May 12, 2009
• Expiry date: Feb 15, 2024

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/00085
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A reactor for the thermal cleavage of monofunctional and/or polyfunctional carbamic esters into the corresponding isocyanate and hydroxyl components in the liquid phase having devices for introduction of heat into the reactor, where the devices are heat exchanger plates through which a heat transfer medium flows and have a geometry defined by the ratio of the degassing area to the volume and arrangement of the heating surfaces which makes it possible for the cleavage to be carried out in a two-phase mixture which has a gas content of over 50% by volume.