The phenomenon of air preheater clogging during the operation of electric boilers can seriously affect the safe operation of the unit. The hazards of air preheater clogging mainly manifest in:
1. Increasing the resistance of the air duct leads to increased air leakage in the air preheater and a significant increase in fan power consumption;
2. The boiler cannot achieve normal operation of the induced draft fan, and the torque on the rotor of the air preheater increases, which can easily cause abnormal damage to components and pose a threat to the safe operation of the air preheater;
3. Uneven ash blockage and differential pressure fluctuations in the air preheater will cause fluctuations in primary and secondary air pressure and volume, leading to fan surge and even causing accidents in the unit. In severe cases, it may be forced to shut down for maintenance, which will have a significant impact on the periodic operation and economic loss of the equipment Scientific Green(shandong) Environmental Technology Co.Ltd. continuously innovates cleaning construction processes and technologies to better serve thermal power generation enterprises. In order to avoid power plant shutdowns caused by dust accumulation in the air preheater, eliminate operational safety hazards, and ensure safe and stable operation of the unit, a large number of practices have been carried out to achieve online flushing of the air preheater, effectively ensuring the safety of the unit's commercial operation cycle, significantly reducing equipment maintenance costs, and minimizing downtime losses. Our company's air preheater online cleaning technology has successfully carried out online cleaning of air preheaters during unit operation for customers multiple times without the conditions for shutdown maintenance, and has received unanimous praise from customers.
The recent performance cases of our company's air preheater online cleaning are shown in the table below: