Stabilized-flame aerogas/oxygas burner and quarl block fitted with such a burner

US6579088B2 · kind B2 · utility

Assignee

• L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Étude et l'Exploitation des Procédés Georges Claude · FR

Inventors

• Thierry Legiret · Paris, FR
• Gerard Le Gouefflec · Voisins-le-Bretonneux, FR
• Stéphane Arnoux · Paris, FR
• Thierry Borissoff · Paris, FR
• Dominique Robillard · Paris, FR

Key dates

• Filing date: Jan 18, 2001
• Grant date: Jun 17, 2003
• Expiry date: Jan 18, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E20/34
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

Provided is a burner which includes a pipe having a free end region designed to be housed in a furnace quarl. The pipe includes one or more fuel feed ducts surrounded over part of their length by a sheath which defines an oxidizer feed channel and is fastened to a flange. A jacket is disposed around at least part of the length of the end region so as itself to be housed in the quarl and to define a feed channel for a second oxidizer between the jacket and the internal wall of the quarl. The jacket is fastened to a flange for securing to the quarl and the flange for the sheath is fastened to that for the jacket. The burner has particular applicability in industrial furnaces, especially for melting non-ferrous materials, for rehearing or for annealing.