Boiler flue gas desulfurization and denitrification equipment is key to ensuring that boiler flue gas emissions meet regulatory standards. Improper maintenance can lead to reduced desulfurization and denitrification efficiency, excessive pollutant emissions, penalties from environmental protection authorities, as well as equipment damage and increased repair costs. Many people are unsure how to maintain this equipment, so below we will provide a detailed explanation of the key maintenance points to help you easily master them.
First, regularly inspect the equipment’s operating status. Check the operating parameters of the desulfurization and denitrification equipment daily—including desulfurization efficiency, denitrification efficiency, flue gas concentrations at the inlet and outlet, equipment pressure, and temperature—to ensure they meet requirements. Observe the equipment’s operating status for any abnormalities, such as leaks, unusual noises, or damage. Report and address any abnormalities promptly to prevent the problem from escalating.
Second, regularly clean and replace consumables. Desulfurization agents in desulfurization equipment (such as lime water or desulfurization granules) lose their effectiveness after a period of use and must be replaced or replenished regularly to ensure desulfurization performance. For denitrification equipment, regularly check the levels of denitrification agents (such as ammonia) and replenish them promptly to prevent insufficient supplies from affecting denitrification performance; At the same time, regularly clean ash and sediment buildup inside the equipment to prevent blockages that could impair flue gas flow and treatment efficiency.
Third, inspect pipes and valves to ensure proper sealing. If the pipes and valves of desulfurization and denitrification equipment are not properly sealed, flue gas leaks may occur, compromising treatment efficiency and causing environmental pollution. Regularly inspect the sealing condition of pipes and valves, and replace damaged seals promptly; If pipes are damaged or blocked, repair and clean them promptly to ensure unobstructed flow and proper sealing.
Fourth, maintain the control system to ensure stable operation. The control system of desulfurization and denitrification equipment manages operational parameters and processes. Regularly inspect components such as sensors, controllers, and actuators to ensure normal operation; calibrate instruments periodically to ensure accurate readings and prevent operational issues or reduced treatment efficiency caused by incorrect parameters; Regularly inspect electrical circuits to prevent equipment shutdowns caused by circuit failures.
Fifth, implement winter freeze protection measures. During winter, when temperatures are low, the pipes and water tanks of desulfurization and denitrification equipment are prone to freezing, which can prevent the equipment from operating normally. In winter, implement freeze protection measures by insulating pipes and water tanks and regularly checking the liquid levels within the equipment to prevent freezing; if the equipment freezes, never use an open flame to thaw it—instead, use warm water to thaw it to avoid damaging the equipment.
Note: Maintenance of desulfurization and denitrification equipment must be performed regularly. Develop a reasonable maintenance schedule based on the equipment’s frequency of use and operating conditions. Ensure proper safety precautions during maintenance; only perform operations after the furnace has been shut down and the power has been disconnected to avoid injury from flue gas or chemical reagents. If you encounter a malfunction that cannot be resolved, contact professional maintenance personnel promptly.
