Development of Low Nitrogen Gas Steam Boiler System

1.Heavy oil burners, gas burners and dual fuel burners (light oil / gas or heavy oil / gas).
2.According to the operation and operation methods: Oret burners are one-stage, two-stage, progressive two-stage and progressive two-stage with proportional regulator, etc.
3.Industrial burner series: All are high-power burners, designed for special industrial applications

Performance advantages:
● Single stage fire, two stage fire, two stage fire progressive / proportional adjustment ● Can adapt to any type of combustion chamber.
● Air and gas are mixed at the combustion head.
● By adjusting the combustion air and the combustion head, better combustion parameters can be obtained.
● It is not necessary to remove the burner from the boiler, and the mixing device can be directly removed, so that maintenance can be conveniently performed.
● Servo motor is used to adjust the first and second stage air flow, and when the burner stops running, the damper is closed to reduce the heat loss in the furnace.
● A valve sealing control device can be added to the valve group.
● Adopt a flange and an insulating seal to connect and fix the boiler; it is equipped with a 4-hole and 7-hole connector.
● Blast ducts larger than the standard length are available on request.

working principle:
Low NOx burners and low nitrogen oxide burners refer to burners with low NOx emissions during fuel combustion. The use of low NOx burners can reduce nitrogen oxide emissions during combustion. The nitrogen oxides produced during the combustion process are mainly NO and NO2. These two nitrogen oxides are commonly referred to as nitrogen oxides NOx. A large number of experimental results show that the nitrogen oxides emitted by the combustion device are mainly NO, which accounts for about 95% on average, while NO2 accounts for only about 5%.

The NO produced by general fuel combustion mainly comes from two aspects: one is the oxidation of nitrogen in the air used for combustion (combustion air); the other is the nitrogen contained in the fuel is decomposed and reoxidized during the combustion process. In most combustion devices, the former is the main source of NO. We call this kind of NO as "thermal reaction NO", the latter as "fuel NO", and also "instant NO". The NO formed during combustion can react with intermediate products containing nitrogen atoms to reduce NO to NO2. In fact, in addition to these reactions, NO can also generate NO2 with various nitrogen-containing compounds. When the reaction reaches a chemical equilibrium in an actual combustion device, the [NO2] / [NO] ratio is small, that is, the conversion of NO to NO2 is very small and can be ignored. Combustion technology to reduce NOx NOx is generated by combustion, and the combustion method and combustion conditions have a greater impact on the generation of NOx. Therefore, you can improve the combustion technology to reduce NOx, the main way is as follows: select a fuel with a lower N content, Including fuel denitrification and conversion to low-nitrogen fuel; lowering the air excess coefficient and organizing too rich combustion to reduce the oxygen concentration around the fuel; when the excess air is small, reducing the temperature peak to reduce the "thermal reaction NO"; in the oxygen At lower concentrations, increase the time that combustibles stay in the flame front and in the reaction zone. The specific methods commonly used to reduce the formation and emission of NOx are: staged combustion, recombustion, low-oxygen combustion, rich and low temperature combustion, and flue gas recirculation.

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