Separation of finely divided metal oxides, produced by combustion of metal carbonyls, from a stream of gas

US4139351A · kind A · utility

Assignee

• BASF SE

Inventors

• Werner Ostertag · Havelsee, DE
• Franz L. Ebenhoech · Ludwigshafen, DE
• Gerd Wunsch · Speyer, DE
• Erfried Voelkl
• Theodor Mader · Ludwigshafen, DE

Key dates

• Filing date: Apr 7, 1977
• Grant date: Feb 13, 1979
• Expiry date: Apr 7, 1997

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S55/25
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Finely divided metal oxides produced by combustion of metal carbonyls are separated from the stream of gas by filtration. Before filtration, the stream of gas is subjected to a permanent change of direction in a tubular zone. This change of direction must be sufficient to cause a centrifugal acceleration which is from at least 1,000 to 10,000 times the acceleration due to gravity.