Low-nitrogen boiler burner refers to a burner that emits low NOx during fuel combustion. There are many factors that affect the generation of fuel-based NOX, which are related to temperature, oxygen content, reaction time, etc. Therefore, the principle of low-nitrogen burners is simply to adjust the combustion air and combustion head to obtain excellent combustion parameters.
With the continuous upgrading of combustion technology and the increasing awareness of environmental protection, there is an increasing demand for boiler low-nitrogen burners in various industrial production. But there are many boiler low-nitrogen burner users who don't know much about the difference between boiler low-nitrogen burners and general burners.
We all know that there are many technologies to manipulate high temperature nitrogen oxides, the common ones are:
1. The burner is specially designed. For example, burner manufacturers choose designs such as low nitrogen oxide emission baffles, air classification and flue gas recirculation. Introducing the combustion products in the furnace into the flame or mixing the POC of the exhaust system with air or fuel, and then lowering the furnace temperature, can achieve the purpose of flue gas recirculation.
2. Exhaust gas or flue gas recirculation reduces nitrogen content, etc. The flue gas recirculation can complete the exhaust system that induces POC to burn from the furnace flame (POC) or the exhaust system that uses the furnace flame to burn the POC, mixes with air or fuel, and reduces the flame temperature. The oxygen that can be used to control the reaction rate is also diluted, and then the possibility of oxygen entering the nitrogen oxides to form a reaction is reduced. Air classification technology controls the furnace temperature and chemical environment, and then reduces the formation of nitrogen oxides.
3, increase chemical enhancers (such as ammonia);
4. Use catalyst to assist combustion, etc.
Generally speaking, the boiler low-nitrogen burner covers the common range of industrial use, mainly including: direct flame burner and radiant tube burner, which can be used for cold combustion air and heat exchanger and heat storage device. Thermal combustion air. At the center of the straight flame burner is the proven baffle technology.
Especially in recent years, following the regeneration and use of modern cold combustion air burners, the emissions of nitrogen oxides, carbon monoxide, and carbon dioxide have decreased than expected. At the same time, there is only a small loss of combustion heat efficiency. For most industrial combustion, it is Environmentally friendly products. Zhengzhou BNTET boiler low-nitrogen burner is good in quality and price, and it is one of the brands available for selection in recent years.
