Common combustion methods of gas boiler burners

Common combustion methods of gas boiler burners
Natural gas boilers are now widely used, do you know how the gas boiler burner you use burns?
Gas boilers generally adopt diffusion combustion, fully premixed combustion, and flameless combustion.
1. Diffusion combustion
The diffusion combustion method does not perform premixing, but diffuses gas at the nozzle orifice and then burns.
Advantages: This combustion method does not pre mix, but diffuses gas at the nozzle orifice and then burns. The combustion method is relatively simple and the flame is relatively stable.
Disadvantages: Due to the long flame, incomplete combustion is prone to occur, resulting in a large amount of carbon monoxide and nitrogen oxides, which is not conducive to the full utilization of boiler fuel, improving boiler thermal efficiency, and difficult to meet boiler emission standards.
2. Full premixed combustion method
The fully premixed combustion method involves mixing natural gas with air before combustion, and the mixed gas enters the burner chamber for combustion.
Advantages: Pre mixing of air and gas, heat transfer through multiple radiators, and increased heat transfer intensity. The advantage of using this combustion method is that the combustion flame is clearer and the thermal efficiency is higher.
Disadvantages: The combustion of premixed materials requires precise combustion speed, fast combustion speed, uniform combustion, and sufficient radiation heat transfer.
3. Flameless combustion
A combustion method that evenly mixes the space before combustion with the gas in the gas boiler. When using this method, the oxygen required during the gas combustion process does not need to be obtained in the surrounding air, but only needs to be mixed with the air to reach the combustion zone to achieve instantaneous combustion completion.
When selecting combustion methods, it is necessary to compare the advantages and disadvantages of different combustion methods. Good combustion methods can also help boilers achieve full combustion, improve thermal efficiency, and reduce emissions. Therefore, careful selection is crucial.