Thermal decomposition of N2O

US6328941A · kind A · utility

Assignee

• BASF SE

Inventors

• Otto Watzenberger · Ludwigshafen, DE
• David Agar · Rimbach, DE

Key dates

• Filing date: Jan 11, 2000
• Grant date: Dec 11, 2001
• Expiry date: Jan 11, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/151
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Recuperative heat exchangers or regenerative heat exchangers are used for the thermal decomposition of N.sub.2 O in N.sub.2 O-containing gases. The process for the thermal decomposition of N.sub.2 O in N.sub.2 O-containing gases at from 800 to 1200.degree. C. comprises passing the N.sub.2 O-containing gas through one or more recuperative heat exchangers or regenerative heat exchangers in such a way that when the gas to be reacted is passed through a charge of heat transfer material it is heated to a temperature in the range from 800 to 1200.degree. C. and the N.sub.2 O present is decomposed thermally, and cooling the reacted gas by heat exchange so as to heat the charge of heat transfer material and the gas to be reacted.