What is the function of flue gas recirculation pipe of gas boiler?

The gas boiler uses natural gas as fuel, and the heat generated by combustion heats the medium, and then transports the medium to the heating equipment using thermal technology. The gas-fired boiler system consists of many components, with slight differences. Some users will find that flue gas recirculation pipes will be added to the gas-fired boilers in use. In this regard, we are analyzing the function and principle of flue gas recirculation pipe of gas boiler for everyone.

Function of flue gas recirculation pipe of gas boiler

As we all know, nitrogen oxides are the pollution factors of gas-fired boilers, and their emissions are strictly controlled by environmental protection standards. Flue gas recirculation combustion technology is a mature nitrogen oxide control technology, which can realize ultra-low nitrogen emission of nitrogen oxides below 30 mg/nm³.

The principle of gas boiler flue gas recirculation combustion technology is that part of flue gas is mixed with air and sent to the combustion chamber for combustion support, and the mixed combustion air can effectively reduce the temperature and oxygen concentration in the combustion chamber. Because the activation energy of combustion reaction between gas and oxygen is far less than that between oxygen and nitrogen, gas first reacts with oxygen. When there is surplus oxygen, the gas reacts with nitrogen to generate nitrogen oxides, and at the same time, the low temperature in the reaction zone makes the reaction with nitrogen very slow, thus effectively inhibiting the generation of thermal nitrogen oxides.

The function of flue gas recirculation pipe of gas boiler is to input flue gas into the channel of burner. In order to control the amount of recycled flue gas, a baffle will be set on the recirculation pipeline, and the amount of flue gas recirculation will be adjusted by adjusting the opening of the baffle.

ZOZEN gas boiler realizes ultra-low nitrogen emission

ZOZEN Boiler is a large-scale industrial boiler enterprise with A-class boiler manufacturing license. The company's advanced tooling equipment and powerful R&D force make the quality and performance of low-nitrogen gas-fired boilers outstanding, which is unique in the mixed boiler market and has gained a good reputation.

ZOZEN Boiler not only knows the function and technical points of flue gas recirculation pipe of gas-fired boiler, but also studies flue gas recirculation in furnace, rich and lean combustion technology, reducing preheating temperature of combustion air and running with low excess air coefficient. ZOZEN boiler analyzes the characteristics of low nitrogen combustion technology of various gas-fired boilers and reasonably selects a complete set of boiler solutions.

The above is the introduction of the function of flue gas recirculation pipe of gas boiler, hoping to help everyone. If you need to buy an energy-saving and environment-friendly gas boiler, please contact the customer service online.