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author： 2020-05-11
According to the principle of nitrogen reduction, there are four kinds of low nitrogen burners: stage combustion low nitrogen burners, thick-light low nitrogen burners, self-recirculating low nitrogen burners and split flame low nitrogen burners.In fact, in the boiler low nitrogen burner product page on the official website of yuanda thermal energy, there is a brief introduction to these four types of burners.Small make up through consulting some information, in this to give you a specific introduction, and put some relevant data.
The first is the stage combustion low nitrogen burner, which mainly USES the method of over-concentrated combustion to reduce the combustion temperature and oxygen concentration in order to achieve the purpose of NOx inhibition.
The low NOx burner in fuel phase combustion can reduce the production of NOx, which is mainly a good organization of aerodynamic conditions and the mixing of fuel and air.A swirl blade is set at the outlet of the burner to achieve a certain strength of the swirl, and the fuel is sprayed to the inner surface of the outer swirl layer to evenly mix the fuel with the primary air and some secondary air to form a fuel over-concentrated combustion zone.In the fuel overconcentration area, the unburned combustible material is mixed with the high-speed outer airflow to form the fuel overlight combustion area, and the combustion process is finally completed.This method is different from the foregoing two period of combustion, the fuel too thick area, due to the high temperature flue gas flow, the flame temperature is lower, and the air is not enough, so can not only suppress temperature type NOx, and still can reduce NOx generation of fuel type, because the whole flame surrounded by the outer rotating flow, fuel too thick zone of soot and NO through fuel light zone, will continue to burn out.This burner can reduce NOx concentration by about 50%.
And then there's the tiny-light low nitrogen burner, which works by overburning one part of the fuel and underburning the other.Because of the large amount of air, the combustion temperature must be reduced, thus reducing the temperature NOx, which you "deviate from combustion" or "non-chemical equivalent combustion".The upper part of the thick-light burner is too light burner, the lower part is too thick burner, the air used by the two burners is divided equally, and the fuel is distributed by 22%~40% above and 78%~60% below.If the deviation ratio is too large, it will cause the increase of soot and NO.Deviating from combustion y-nozzles a burner that achieves thick-light combustion on a nozzle is called its own deviating from combustion nozzles.This nozzle can have two layout, that is, the size of the nozzle layout and the upper part of the small nozzle, the lower part of the large nozzle layout, the large nozzle to achieve too thick burning around, small nozzle for too light burning.Compared with general nozzles, NOx production can be reduced by 20%~ 40%.
In particular, broad thermal energy undertakes the non-standard production of various low-nitrogen burners. We have developed more than one hundred sets of non-standard burners with customers all over the country and even abroad. The delivery time is short.Over the past ten years, we have constantly improved and upgraded our technology to meet the needs of customers.Due to the differences in each working condition, product requirements and on-site material requirements are different. Only after the communication between the two parties or the actual survey can we provide users with appropriate and cost-effective solutions.