4220 Excess Air Gas Burners are commonly used on heat treat and nonferrous melting furnaces, kilns, ovens, air heaters, dryers, chemical process equipment, and other applications where superior temperature uniformity is required.
These sealed-in, nozzle-mix burners are stable over a wide range of air/gas ratios from large amounts of Xces air, to stoichiometric, up to 50% Xces fuel. Burners can be ignited at rich, lean, or correct air/gas ratio, then immediately turned to high fire. NOx emissions are low for all air/gas ratios.
Advantages Of Xces AirXces air can improve temperature uniformity by avoiding hot spots in front of burners, by churning furnace atmosphere to reduce stratification, and by creating positive furnace pressure to eliminate cold air infiltration. Application TemperatureThe 4220 burners can be used with chamber temperatures up to 1100° C. If furnace temperature could rise above 850° C after shutdown, some air should be maintained through the burner to prevent overheating. Standard ConstructionBurner bodies are heat resistant cast iron with Inconel air tubes. Mounting plate and tile assembly can be separated from the burner body for installation convenience. Air and gas connection orientation can be rotated in 90° intervals. |
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