Gas Burner for Regenerative Glass Tank Furnaces

Introduction

Osaka Gas has developed a burner as an alternative to heavy oil-firing burners for regenerative glass tank furnaces used in large-scale glass melting plants that melt more than tens of tons of glass per day. In a glass tank furnace, the temperature distribution inside the furnace is important for raw materials to undergo vitrification, melting, and removal of bubbles from the molten glass and be high-quality glass. To meet customers’ specific needs for temperature distribution in the furnace, burners Osaka Gas builds are all made-to-order ones. The company has converted more than 30 units (as of March 2020) and also had success in using gas for a large regenerative glass tank furnace with a melting capacity of more than 400 tons.

Efforts of Osaka Gas

■ Features of burners developed by Osaka Gas

• 1. To achieve highly luminous flames, high efficiency, and low NOx, we build made-to-order burners.
• 2. Our burners create flame shapes at will to produce an optimal oxidation/reduction atmosphere.
• 3. Flame shapes controlled in a versatile manner are intended to achieve an optimal temperature distribution and to improve product quality.

Burner Specifications

■ Features of conversion services provided by Osaka Gas

• 1. Osaka Gas designs all the gas burners available from it and builds them as made-to-order ones to construct the most suitable combustion system.
• 2. Osaka Gas will safely and responsibly carry out conversion to city gas and make adjustments.
• 3. Osaka Gas will also provide after-sales follow-up and energy-saving arrangements after conversion to city gas.

Combustion type	Underport	Throughport
Photographed burner
Rated capacity	700〜3,500kW	700〜12,000kW
Gas type	13A city gas	←
Burner tip diameter	50～80A	100A
Purge air volume	20〜30m3/h	Not applicable
Burner holder	Air-cooled or water-cooled	Water-cooled

Table 1. Osaka Gas burner specifications