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Low nitrogen gas steam boiler

1.Heavy oil burners, gas burners and dual fuel burners (light oil / gas or heavy oil / gas). 2.Divided according to the operation and operation mode: Oret burners are one-stage, two-stage, progressive two-stage and progressive two-stage with proportional regulator (the latter implements proportional adjustment operation) 3. Industrial burner series : All are high power

product description

Low nitrogen gas steam boiler


重油燃烧器,燃气燃烧器以及双燃料燃烧器 (轻油/燃气或重油/燃气)。 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, there are two types of ORERT burners: one-stage, two-stage, progressive two-stage and progressive two-stage with proportional regulator (the latter implements proportional adjustment operation)

3. Industrial burner series: All are high-power burners, designed for special industrial applications.


Performance advantage


● 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 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.

● The servo motor is used for advanced, two-stage air flow adjustment, 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 insulation 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 (combustion air) used for combustion; the other is the nitrogen contained in the fuel is thermally 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 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 NOx generation. Therefore, the improvement of combustion technology can be used to reduce NOx. The main ways are as follows: select a fuel with a lower N content, Including fuel denitrification and conversion to low-nitrogen fuels; reducing the excess air coefficient and organizing too rich combustion to reduce the oxygen concentration around the fuel; reducing the temperature peak to reduce the "thermal reaction NO" when the excess air is small; 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 poor combustion, and flue gas recirculation.