How to solve the problem of easy backfire and deflagration in fully premixed low nitrogen burner tec

How to solve the problem of easy backfire and deflagration in fully premixed low nitrogen burner technology?
1. Detonation is only an isolated amplification, and other combustion methods of burners also have detonation. The combustion of a fully premixed burner has certain requirements for air fuel ratio control. When the air is severely insufficient, especially under high-power operating conditions, if heating is not stopped in time, it is very easy to damage the surface fabric, and in severe cases, tempering may occur.
2. It is necessary to adopt scientific furnace head design and ignition methods. Burners with different powers have different requirements for ignition methods, and the ignition power should be adjusted properly; If the furnace head design is unreasonable and the ignition method cannot ignite the released combustible gas in a timely manner, it can cause detonation.
Solution:
1. The air fuel ratio control capability of the burner meets the requirements of safety performance. As long as the oxygen content in the flue gas is monitored well (it is recommended to install a flue gas oxygen analyzer for real-time monitoring), and any abnormalities are adjusted or stopped in a timely manner, flashback will not occur.
2. The design scheme of the furnace head must be verified through external trial firing and practical operating conditions. When the power is high, guide fire ignition should be used. At the same time, the ignition power should be reduced as much as possible to avoid detonation.
Will high oxygen content reduce combustion efficiency? Although achieving ultra-low nitrogen combustion through fully premixed combustion requires a high excess air coefficient, the combustion process is very thorough and, when applied in traditional boilers, the CO content cannot be tested in most cases.
Importantly, the installation of the fully premixed burner is simple, and the renovation plan achieves seamless integration between traditional burners and boilers. The on-site construction volume is minimal, and the land occupation is similar to that of traditional machines, making it particularly suitable for low nitrogen combustion renovation projects with limited space.