Guided by the national strategy of Carbon Emissions, natural gas boilers are now widely used and have become the focus of energy-saving and environmental protection transformation in the thermal industry. Apart from the shell of the boiler burner, do you know how the burner of the gas boiler you are using burns? Talk to a senior technical expert from EBICO about the combustion method of gas boiler burners.
1.Diffusion combustion
Diffusion combustion method is not pre-mixed, but diffuse the gas at the nozzle opening, and then burn it.
Advantage: This type of combustion is not pre-mixed, but diffuses the gas at the nozzle opening and then burns it. The combustion method is relatively simple and the flame is relatively stable.
Disadvantages: Because of the long flame, it is easy to produce incomplete combustion phenomenon, will produce more carbon monoxide and nitrogen oxides, which is not conducive to the full use of boiler fuel, boiler thermal efficiency, and difficult to meet the boiler emission standards.
2.Full premixed combustion method
Full premixed combustion method is to pre-mix natural gas and air before combustion, the mixed gas in the burner chamber combustion.
Advantage: Pre-mixed air and gas, multiple radiant heat transfer, heat transfer intensity is increased. The advantage of using this combustion method is that the flame is clearer and the thermal efficiency is higher.
Disadvantages: combustion premixing ratio requires accurate combustion rate fast, uniform combustion full radiation heat transfer.
3.Flameless combustion
The space before combustion and gas in the gas boiler burners for homogeneous mixing of combustion methods. When using this method, the oxygen required by the gas in the process of combustion does not need to be obtained in the surrounding air, and only needs to reach the combustion zone with the air mixture to achieve instantaneous combustion completion.
When choosing the combustion method, you need to compare the advantages and disadvantages of choosing different combustion methods, and choose a more suitable combustion method of boiler burner according to the project working conditions and customer needs. For more boiler burner expertise, please visit https://cn.ebico.com/.
Yellow flame, blurred inner flame and even black smoke are common phenomena of incomplete combustion in the operation of gas boilers. In the commissioning process of boilers and supporting burners, the phenomenon of incomplete combustion is very common, EBICO commissioning engineers on the causes of incomplete combustion of boilers and solutions for everyone to answer questions....
