Natural gas boilers are now widely used, but do you know how the burners of your gas boilers burn? So today, let's talk about the combustion mode of gas boiler burner. Gas fired boilers generally use diffusion combustion, full premixed combustion and flameless combustion.

   The diffusion combustion method is not premixed, but diffuses the gas at the nozzle mouth, and then burns it. Advantages: this combustion method does not premix, but diffuses the gas at the nozzle mouth, and then burns it. The combustion mode is relatively simple and the flame is relatively stable.

   Disadvantages: due to the long flame, it is easy to produce incomplete combustion, which will produce more carbon monoxide and nitrogen oxides, which is not conducive to the full utilization of boiler fuel, the improvement of boiler thermal efficiency, and it is difficult to meet the boiler emission standard. The fully premixed combustion mode is to mix natural gas with air before combustion, and the mixed gas is burned in the burner chamber.

   Advantages: premixed air and gas, multi radiator heat transfer, and improved heat transfer intensity. The advantage of using this combustion method is that the combustion flame is clear and the thermal efficiency is high. Disadvantages: accurate combustion premixed ratio, fast combustion rate, uniform combustion and full radiation heat transfer are required. A combustion method of uniformly mixing the space before combustion with the gas in the gas-fired boiler.