Method of and burner for burning liquid or gaseous fuels with decreased NO.sub.x formation

US4575332A · kind A · utility

Assignee

• Deutsche Babcock Werke Aktiengesellschaft · DE

Inventors

• Rolf Oppenberg · Wesel, DE
• Helmut Wiehn · Oberhausen, DE

Key dates

• Filing date: Jun 26, 1984
• Grant date: Mar 11, 1986
• Expiry date: Jun 26, 2004

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23D17/002
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

To allow liquid and/or gaseous fuels to be burned with decreased NO.sub.x formation, the combustion air is fed in at axial intervals one after the other. The percentage of primary air is higher than that of secondary air. The injector effect of the primary air draws flue gas out of the firebox and supplies it to a flame-initiation point between the primary-air and secondary-air feeds.