What are the structures and characteristics of natural gas burners?

What are the structures and characteristics of natural gas burners?

For diffusion combustion, the mixing process of natural gas and air is crucial as it not only shortens combustion time, but also has a significant impact on stability and combustion performance.

The structural design of the burner requires that the natural gas combustion head and air supply device must ensure rapid and uniform mixing of natural gas and air. Generally, the following main design structures are used to achieve this.

1、 Natural gas is divided into multiple streams and mixed with swirling air through multiple porous pipes.

2、 Using natural gas and air jet passing through the annular gap of the pore area, two gases meet and mix at different angles and speeds.

3、 Utilize a swirl device to enhance the mixing of natural gas and air.

The use of natural gas and air injection devices on various forms of burners is nothing more than based on the above mixed structure.

As for the type of burner structure to be used, it mainly depends on factors such as the structure and usage requirements of the natural gas thermal furnace, the supply conditions of natural gas and combustion air, etc.

In the structural design of natural gas burners, the total area of the burner holes of the diffusion type natural gas burner can be calculated based on the diameter of the holes and the total number of holes.

If the diameter of the fire hole is too large, it is not easy to burn, and if the fire hole is too small, it is easy to block the combustion head. The determination of the distance between the fire holes can ensure the normal propagation of flames without merging with each other. Within a certain range of fire hole diameter, if the heat intensity of the fire hole exceeds a certain range, it will worsen the combustion condition of the burner, such as detachment, smoking, and insufficient heat intensity.