Writer： admin Time：2021-04-14 00:00 Browse：℃
The gas burner is a fuel and air into the furnace continuously, rational organization of the pulverized coal flow, and allowed to mix well, rapid and stable ignition and combustion of a burner apparatus. With the view of low nitrogen and ultra low NOx combustion burners Type
Low nitrogen and ultra low NOx combustion burners Type
Nitrogen oxides are the main component of smog, it is one of the main sources of environmental pollution. In general, nitrogen oxides start generating more than a thousand degrees Celsius in the environment, and generate large quantities in the fourteen hundred degrees Celsius. Therefore, in order to reduce nitrogen oxides generated there are two main ways, a reduced flame temperature, two, reduce the oxygen content. And this is the main principle of low nitrogen burners. Burner conventional gas NOx emissions typically about 120 to 150 mg. Low NOx combustion generally refers NOx emissions of 30 to 80 mg of the burner. NOx emissions is commonly referred to as 30 milligrams Ultra Low NOx burners. High conventional burner NOx emissions from mainly the following several reasons: In order to ensure full combustion L, using a larger excess air; L combustion temperatures of around 1800 degrees; low-NOx combustion is usually based on the following technologies: Electronic proportional control and oxygen content control; to precisely control the oxygen content; of FGR flue gas recirculation techniques to reduce the flame temperature and oxygen content; surface premix combustion technology to reduce the flame temperature and combustion achieved; the above-described art generally 1 a low nitrogen burners must be configured; divided into the following types based on the techniques described above, the market of low-nitrogen burners: l FGR burners low nitrogen; L Ultra low NOx combustion surface of the burner; Super L + FGR nitrogen surface combustion burner ; wherein the nitrogen FGR low NOx burners can be generally in the whole range of fire control to 65 mg, about 40 mg limit, to further reduce NOx emissions may result in combustion instability, or other defects sacrificial adjustable ratio; super surface combustion low NOx combustion is generally in the whole NOx can be controlled to within the range of fire of 30 mg, which is the advantage of simple installation, no flue gas recirculation duct FGR; its main drawback is the need to filter the air, increasing the maintenance workload; while about 7% oxygen content, reducing the partial combustion efficiency. + Ultra Low NOx combustion surface FGR burners and combines the advantages of FGR NOx reduction control the oxygen content of the combustion surface of advantages can be achieved in the whole range of the fire control NOx levels to 20 mg, while controlling the oxygen content less than 3%, to maximize combustion efficiency . Its main disadvantage is that equipment costs. Therefore, the boiler can be purchased as required at the time of purchase low nitrogen burner, now the national standard for nitrogen oxide emissions below 80 mg, and in some places have asked NOx emissions below 30 mg. If you need to buy low-nitrogen burners welcome to contact us.
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