In the energy-saving equipment industry, there is a term called flameless combustion. I wonder if you have heard of it. The combustion method of flameless combustion adopts premixing of air and gas, and uses an injector to use gas as the injection medium and air as the injected medium. In a few cases, air is also used as the injection medium, so that the two can be uniformly mixed through the injector. combustion. Today, the editor has found some information for everyone, focusing on the benefits of flameless combustion of gas burners.
Advantages of flameless combustion of gas burners:
1. Flameless combustion: Since the gas and air are premixed before entering the burner, mixing time is no longer required during the combustion process. Therefore, the total time of the combustion process actually depends on the chemical reaction time.
2. The air coefficient required to complete the combustion of gas is very small, generally 1.05~1.15, or even as low as 1.03~1.05, but the burnout degree is very high, and its chemical incomplete combustion loss is close to zero.
3. The combustion temperature is high, close to the theoretical combustion temperature; the combustion flame is very short. In the background of the hot combustion tunnel, the flame cannot even be seen, so it is called flameless combustion, and the radiation ability of the torch is poor.
4. Flameless combustion is also called "mild and strong low-oxygen dilution" combustion, or flameless oxidation; flameless combustion has no flame front and local high-temperature areas, and the temperature field is evenly distributed with small fluctuations.
5. The generation of NOx and soot during the combustion process is suppressed; the combustion stability is good and the combustion noise is low.
6. In industry, this technology is mostly used in gas and liquid fuel combustion in the steel and metallurgical industries, and the air needs to be preheated at high temperature to above the auto-ignition point of the fuel to achieve flameless combustion, and the conditions are harsh.
7. Flameless combustion requires high-temperature preheated air. It is found that the core of flameless combustion is to control turbulent mixing, thereby achieving flameless combustion in an air atmosphere without preheating (normal temperature).
8. Before burning, the burner premixes gas and air in a certain proportion into a combustible mixture, and then ejects it from the gas burner for combustion, which is a power combustion type.
Through the above analysis, we can know that there are many benefits of gas burner smokeless combustion. After all, this method can make the burner self-sufficient in gas. The oxygen required during the combustion process does not need to be obtained from the surrounding air. It only needs to be mixed with air to reach the combustion zone to achieve instantaneous combustion. Taken together, it has the outstanding advantages of making the burner self-adjusting, the mixing device simple and reliable, and the combustion speed fast.