Guide: National environmental protection requirements are becoming more and more stringent. Ultra-low nitrogen boilers are in general trend. Following Beijing and Tianjin, Hebei, Henan, Sichuan, Shaanxi and other regions have begun to implement low-nitrogen standards to protect the environment and protect our homes. What is the principle of an ultra-low nitrogen burner boiler, and what problems should be paid attention to in the low-nitrogen retrofit of a gas boiler, I will understand with you.
National environmental protection requirements are becoming more and more stringent. Ultra-low nitrogen boilers are in general trend. Following Beijing and Tianjin, Hebei, Henan, Sichuan, Shaanxi and other regions have begun to implement low-nitrogen standards to protect the environment and protect our homes. What is the principle of an ultra-low nitrogen burner boiler, and what problems should be paid attention to in the low-nitrogen retrofit of a gas boiler, I will understand with you.
1. The principle of ultra-low nitrogen burner boiler
Ultra-low nitrogen gas boiler = ultra-low nitrogen burner + ultra-low nitrogen boiler body + FGR flue gas recirculation technology
Xinli ultra-low nitrogen boiler takes about 10%-30% of the flue gas (temperature about 170℃) at the tail of the boiler into the air inlet of the burner through the stainless steel flue gas pipe, mixes it with combustion air and enters the furnace. Thereby lowering the temperature of the combustion zone, and at the same time reducing the oxygen concentration in the combustion zone, and finally reducing the amount of thermal NOx generated, so that the nitrogen oxide emission in the flue gas of the boiler tail is less than 30mg/m3.
The returned high-temperature flue gas contains a certain amount of saturated water vapor, which will produce condensed water when it is cold. The use of stainless steel pipes and drainage pipes can prevent corrosion and extend the service life.
2. Precautions for low-nitrogen transformation of gas boilers
In order to help users reduce the cost of low-nitrogen transformation, users can transform their existing gas-fired boilers into ultra-low-nitrogen boilers. The furnace size of the boiler undergoing low-nitrogen transformation needs to meet the transformation requirements. If the size is unqualified, even if the fgr flue gas recirculation technology is equipped with a low-nitrogen burner, the transformed boiler cannot achieve ultra-low nitrogen emissions.
During the low-nitrogen transformation, the user needs to indicate the type of gas fuel used in the boiler, and our company needs to configure the corresponding low-nitrogen burner according to the type of fuel.
3. Complete equipment of ultra-low nitrogen gas boiler
The complete set of equipment includes low-nitrogen boiler body, low-nitrogen burner, control system, chimney, water treatment equipment, energy saver, instrument valve, condensing circulating pump, etc.
The above is a brief introduction to the working principle of ultra-low nitrogen boilers and the precautions for low-nitrogen retrofitting of gas-fired boilers. I hope to help you out. If you have any questions, please consult online or call our company to discuss in detail.
