Oxy-boost control in furnaces

US6454562B1 · kind B1 · utility

Assignees

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

Inventors

• Mahendra Joshi · Katy, US
• Ovidiu Marin · Paris, FR

Key dates

• Filing date: Apr 20, 2000
• Grant date: Sep 24, 2002
• Expiry date: Apr 20, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S65/13
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A process controls oxy-boost firing and air-fuel burner firing in furnaces, including large glass furnaces such as float furnaces. The large side-fired regenerative float furnaces use oxy-boost firing for a variety of reasons, including production increase, improved glass quality, lowering of superstructure temperatures, and reduction of emissions. An adaptive controller receives input data from process parameter sensors throughout the furnace, and adjusts its control logic for controlling both the oxy-boost burners and the air-fuel port burners.