Writer： admin Time：2020-12-30 16:42 Browse：℃
The gas-fired low-nitrogen burner is based on the original boiler with overall emission and combustion technology optimization to achieve the reduction of NO3 and nitrogen oxides A general term for burners. The gas low-nitrogen burner can obtain the best combustion parameters by adjusting the combustion air and combustion head. is divided into operation and operation mode; one-stage, two-stage, progressive two-stage and progressive two-stage with proportional regulator (the latter implements proportional adjustment operation). Low NOx burners can be roughly divided into the following categories: stage burners, self-recirculating burners, rich and thin burners, split flame burners, mixed boost burners, low NOx pre-chamber burners, etc. They Each has its own advantages. Currently, there are a variety of technologies used to control high temperature nitrogen oxides, including: burner design, exhaust or flue gas recirculation. Chemical additives (such as ammonia). Catalyst assist. The burner manufacturer adopts the design of low nitrogen oxide emission baffle, air classification and flue gas recirculation. The combustion products in the furnace are introduced into the flame or the POC of the exhaust system is mixed with air or fuel, thereby reducing the furnace temperature, which can achieve the purpose of flue gas recirculation. flue gas recirculation can be achieved by inducing products that are burned from the furnace flame (POC) or the exhaust system that uses the furnace flame to burn POC, mixed with air or fuel, and reduces the flame temperature. The oxygen that can be used to control the reaction rate is also diluted to reduce the possibility of oxygen entering the nitrogen oxides to form a reaction. Air classification technology controls furnace temperature and chemical environment, thereby reducing the formation of nitrogen oxides. Gas low-nitrogen burners include direct flame burners and radiant tube burners, which can be used for cold combustion air and preheated combustion air generated by heat exchangers and heat storage devices. The core of the straight flame burner is the proven baffle technology. With the regeneration application of modern cold combustion air burners, the emission levels of nitrogen oxides, carbon monoxide and carbon dioxide are significantly lower than expected. In the design of the radiant tube, Blom uses a unique engineering method. When the burner is recirculating exhaust gas, the thermal efficiency is only negligible or very small. The difference between low-nitrogen burner and ordinary burner is the following three points: 1. Cost saving and expenditure reduction 2. Time saving: the new boiler has a long cycle and long wait time, which affects production, while the low-nitrogen transformation requires only a short time to complete the transformation 3. The subjective factors of low-nitrogen transformation are caused by the general environment. In the long run, it is a good living environment for future generations. At present, it is a document requirement. Therefore, it is necessary to pass this barrier to produce.
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