XINLI BOILER

Summarize the precautions for the biomass boiler in the soot blowing process

08 Oct, 2021

　　After long-term operation of the biomass boiler, the heating surface is prone to fouling and coking, resulting in deterioration of heat transfer. For the tail flue, due to the long-term accumulation of combustibles, reburning accidents will occur. Therefore, after it has been running for a period of time, it is necessary to blow soot on the heated surface to clean the heated surface and improve its overall operating efficiency.

　　So, what matters should be paid attention to when the equipment is blowing soot?

　　Soot blowing will cause fluctuations in boiler negative pressure, steam temperature, steam pressure, load, and water level, and soot blowing on different heating surfaces has different effects on biomass boilers. These parameters should be checked during the soot blowing process. Regarding the impact of soot blowing, there are the following aspects:

　　1. Soot blowing has a specific impact on the stability of combustion, so combustion inspections should be strengthened during the soot blowing process;

　　2. During low-load operation and unstable combustion, soot blowing cannot be performed; at the same time, soot blowing makes the heating surface clean and the heat absorption increases, thereby reducing the exhaust gas temperature;

　　3. Since soot blowing will cause large fluctuations in the negative pressure in the furnace, a large negative pressure should be maintained during the soot blowing process to avoid positive pressure in the furnace.

　　Note: In the process of soot blowing, the inspection of the soot blower should be strengthened. If the soot blower is found to be faulty, it should be registered and contacted for maintenance; if the soot blower is found to be stuck in the biomass boiler and leaks, it should be stopped in time Blow soot and deal with it in time.