Advantages and Common Technical Solutions of Low Nitrogen Boiler Burners
Advantages and Common Technical Solutions of Low Nitrogen Boiler Burners
The 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 type NOX, which are related to temperature, oxygen content, reaction time, etc. Therefore, the principle of a low nitrogen burner is simple, which is to obtain excellent combustion parameters by adjusting the combustion air and combustion head.
With the continuous upgrading of combustion technology and the enhancement of environmental awareness, the demand for low nitrogen burners in boilers in various industrial production is increasing. However, many users of boiler low-nitrogen burners are not very familiar with the differences between boiler low-nitrogen burners and general burners.
We all know that there are many techniques for manipulating high-temperature nitrogen oxides, including:
1. The burner is specially designed. For example, burner manufacturers choose designs such as low nitrogen oxide emission dampers, air classification, and flue gas recirculation. Introducing combustion products from the furnace into the flame or mixing POC from the exhaust system with air or fuel, and then lowering the furnace temperature, can achieve the goal of flue gas recirculation.
2. Reducing nitrogen content through exhaust gas or flue gas recirculation. Use air or fuel and lower the flame temperature. The oxygen that can be used to control the reaction rate is also diluted, and the possibility of oxygen entering nitrogen oxides for the reaction is reduced. Air classification technology controls the furnace’s mild chemical environment, thereby reducing the formation of nitrogen oxides.
3. Add chemical enhancers (such as ammonia);
4. Use catalysts to support combustion, etc.
Generally speaking, boiler low nitrogen burners cover a common range of industrial use, mainly including straight flame burners and radiation tube burners, which can be used for cold combustion air and heat exchangers and heat storage devices. Hot combustion air. The center of the straight flame burner is a validated baffle technology.
Especially in recent years, with the update and use of modern cold combustion air burners, the emissions of nitrogen oxides, carbon monoxide, and carbon dioxide have all decreased compared to expectations. Meanwhile, the loss of combustion thermal efficiency is minimal. For most industrial combustion, it is an environmentally friendly product.