Operating principle

The air and the fuel are injected following mixing in the combustion chamber and ignite in contact with the flame, which they feed. The shape and the positioning of the flame in the furnace tube are of primary importance :

• to optimise the heat transfer processes of radiation and convection for achievement highest possible efficiencies.
• to reduce the emissions of NOx, CO and particulates.

The burner operates with a small oxygen excess, 2 to 3% to ensure total combustion while minimising the thermal losses in the exhaust. In the range of use, the burner approaches the point of balance between increasing CO and NOx formation while guaranteeing a high efficiency.

The combustion gases then pass through the heat exchange zones in the fire-tubes or surrounding coils, depending on the technology, to ensure the designed thermal efficiency is achieved.

To find out more about BABCOCK WANSON burners