Advantages Of Low NOx Boiler Burners And Common Technical Solutions
Advantages Of Low NOx Boiler Burners And Common Technical Solutions
A low nitrogen boiler burner refers to a burner that emits low NOx during fuel combustion. There are many factors affecting the formation of fuel type NOx, which are related to temperature, oxygen content, reaction time, etc. Therefore, the principle of a low NOx burner is very 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 of boilers in various industrial production is growing. However, many users of low-nitrogen burners for boilers do not know the difference between low-nitrogen burners and general burners.
We all know that there are many technologies for manipulating high-temperature nitrogen oxides, including:
1. The burner is specially designed. For example, burner manufacturers choose designs such as low NOx emission dampers, air staging, and flue gas recirculation. The purpose of flue gas recirculation can be achieved by introducing the combustion products in the furnace into the flame or mixing the POC of the exhaust system with air or fuel and then reducing the furnace temperature.
2. Exhaust gas or flue gas recirculation reduces nitrogen content, etc. Use air or fuel and reduce the flame temperature. The oxygen that can be used to control the reaction rate is also diluted, and then the possibility of oxygen entering nitrogen oxides for the reaction is reduced. The air classification technology controls the furnace temperature and chemical environment, thereby reducing the formation of nitrogen oxides.
3. Add chemical enhancers (such as ammonia);
4. Use catalyst to support combustion, etc.
Generally speaking, low nitrogen burners of boilers cover the common range of industrial use, mainly including straight flame burners and radiant tube burners, which can be used for cold combustion supporting air and heat exchangers and heat storage devices. Hot combustion air. The center of the straight flame burner is the proven baffle technology.
Especially in recent years, with the renewal and use of modern cold combustion air burners, the emissions of nitrogen oxides, carbon monoxide, and carbon dioxide have decreased compared with the expected. At the same time, the loss of combustion thermal efficiency is very small. For most industrial combustion, it is an environmentally friendly prod.