Before introducing what is a flue gas recirculation burner, let's take a look at what low-nitrogen burners are. Low-nitrogen burners are burners with low NOx emissions during fuel combustion. Conventional natural gas boiler burners typically have NOx emissions of around 120-150 mg/m3. Low-nitrogen burners typically have NOx emissions of around 30-80 mg/m3. NOx emissions below 30 mg/m3 are commonly referred to as ultra low nitrogen burners. Burners are available in a variety of ways depending on their properties.
And what is a flue gas recirculation burner? In fact, the flue gas recirculation burner uses the flue gas recirculation technology on the low nitrogen burner. So what is the flue gas recirculation technology? This technology refers to reintroducing part of the boiler exhaust gas into the furnace. A technology that reduces nitrogen oxides by mixing gas and air for combustion. This kind of technology is simply a simple combustion method. The advantages of this combustion method are simple, easy to ignite, no tempering, stable combustion and simple structure of the burning appliance. The disadvantage is that for the high calorific value gas with large air demand, the laminar flow diffusion does not reach complete combustion, the CO content in the flue gas is relatively high, and the specific fuel is not large. However, the forced blast diffusion combustion method is actually used in industrial burners in industrial furnaces.
——Author：ebico