Method of measuring entry of water into phosgene-conducting plants

US8519179B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Heiner Schelling · Ludwigshafen, DE
• Ulrich Penzel · Lauscha, DE
• Eckhard Stroefer · Mannheim, DE
• Dirk Hablawetz · Bischofswerda, DE
• Dave Beckwith · Baton Rouge, US
• Kai Thiele · Ekeren, BE
• Johannes Jacobs · Ossendrecht, NL
• Matthias Eiermann · Schifferstadt, DE
• Uwe Storck · Ludwigshafen, DE
• Jon S. Speier · Baton Rouge, US
• Thomas A. Grzanka · Baton Rouge, US
• William Portwood · Baton Rouge, US

Key dates

• Filing date: Jun 23, 2010
• Grant date: Aug 27, 2013
• Expiry date: Aug 28, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N17/00
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a method of measuring entry of water and resulting corrosion in plants for producing isocyanates by reacting phosgene with one or more primary amines in a solvent. The invention further relates to an apparatus for producing such isocyanates, in the work-up section of which probes for monitoring corrosion are arranged in defined places.