The flue gas contains unburned components that have not completed the oxidative combustion reaction, including carbon monoxide, hydrocarbons and their combustion intermediate products, which is often referred to as incomplete combustion. 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.
A similar phenomenon is likely to occur because of the following reasons.
1、Large amount of air
The burner will be blower pressurized to send air and gas mixed combustion, may be due to improper adjustment of the wind-regulating plate resulting in incomplete combustion of gas in the furnace chamber.
2、Smoke exhaust is not sufficient
When the flue gas of the gas boiler burner cannot be discharged smoothly for some reason, the flue gas diffuses around the furnace flame, resulting in incomplete combustion.
3、Flame temperature drop
The gas forms a complete flame and continues to burn, requiring the flame temperature to remain at a fairly high range. When the flame is in contact with the low temperature, the flame temperature drops causing incomplete combustion.
Solutions to incomplete combustion of boilers.
During the combustion process of gas boilers, increase the oxygen control appropriately and fine-tune the amount of gas to ensure that the air and gas maintain a reasonable ratio. Specific measures can be taken to increase the flue gas oxygen content detection probe at the end of the furnace or in the flue to measure the flue gas oxygen content and operate the combustion control system according to the real-time data to increase or decrease the gas supply.
These are the causes and solutions of incomplete combustion of boilers. For more abnormal operation problems of boilers and burners, please call us at +86-510-85187552 for pre-sales consultation, and our commissioning engineers will be happy to serve you!
Based on practical experience, EBICO technical engineers divide the burner flame detectors on the market into the following categories according to the principle, and put forward their respective shortcomings that need to be improved....
