The control of the flame temperature of natural gas burner is a complex process, involving many aspects of factors and technologies. The following is the relevant content about the control of the flame temperature of natural gas burner:

The Impact of Flame Length: The length of the flame from a natural gas burner and its combustion efficiency are actually contradictory. On the experimental platform, the changes in the flame can be clearly observed. In practice, it has been found that when the mixture of gas and air is better, the flame is actually shorter and the temperature is relatively higher. When the mixture of gas and air is poor, the flame elongates, but at this time, the flame temperature is lower.

Adjustment of Air-Fuel Ratio: Under the condition that the mechanical dimensions of the burner remain unchanged, the flame length of a natural gas burner can be adjusted through the air-fuel ratio. This is because improving the conditions for mixing natural gas and air mainly involves enhancing combustion and organizing the flame, such as forming different angles between the flow of natural gas and air to increase mechanical mixing; reducing the diameter of the gas cap holes and increasing their number to enhance contact area; adjusting the air ratio and appropriately increasing the excess air coefficient.

The function of the monitoring system: The monitoring system is crucial for controlling the flame temperature of natural gas burners. Common monitoring methods include direct flame monitoring, ion needle flame monitoring, and ultraviolet monitoring. These monitoring methods can help operators detect combustion abnormalities in a timely manner and take appropriate measures.

Application of High-Temperature Mode: In certain high-temperature equipment, such as industrial heat treatment equipment, when the temperature of the combustion chamber and/or processing chamber walls exceeds 750℃, high-temperature mode can be adopted. In this mode, the burner controller will disconnect from the flame circuit, not monitoring the flame in real time, thus avoiding interference, reducing misjudgment, and maintaining stable operation.

In summary, the control of natural gas burner flame temperature requires a comprehensive consideration of multiple aspects such as flame length, air-fuel ratio, monitoring system, and high-temperature mode. Through reasonable design and meticulous operation, the flame temperature of the natural gas burner can be effectively controlled and adjusted to meet various industrial heating requirements.