The residence time of flue gas in high temperature zone is one of the main factors affecting the amount of NOx. Improving the mixing of combustion and air can reduce the thickness of the flame surface. Under the condition of constant combustion load, the flue gas is on the flame surface. The residence time in the zone is shortened, thus reducing the amount of NOx produced. Hybrid-promoted burners are designed according to this principle.
The principle is to divide a flame into several small flames. Because the small flame has a large heat dissipation area and the flame temperature is low, the "thermal reaction NO" is reduced. In addition, the small flame shortens the residence time of oxygen, nitrogen and other gases in the flame, and has obvious inhibitory effects on "thermal reaction NO" and "fuel NO".
The pre-combustion chamber is a high-efficiency, low-NOx staged combustion technology developed and researched in China in the past 10 years. The pre-combustion chamber is generally composed of primary air (or secondary air) and fuel injection system. The fuel and the primary air are rapidly mixed. The primary combustion zone in the pre-combustion chamber forms a fuel-rich mixture. Due to the lack of oxygen, only part of the fuel is burned, and the fuel precipitates volatiles in the primary flame zone where oxygen is depleted and the flame temperature is low, thereby reducing NOx formation.
1. Heavy oil burner, gas burner and dual fuel burner (light oil / gas or heavy oil / gas).
2. According to the operation and operation mode: Orient burner has one-stage, two-stage, progressive two-stage and progressive two-stage with proportional regulator (the latter performs proportional adjustment operation)
3. Industrial burner series: all high-power burners, designed for special industrial applications.
4. Classification based on NOx reduction combustion technology
The burner is an important equipment on the industrial oil-fired boiler and the gas-fired boiler. It ensures the stable combustion of the fuel and the complete combustion of the fuel. Therefore, it is necessary to start from the burner to suppress the amount of NOx generated.
