The desulpurization pump is the core of the flue gas desulpurization system, and its stable operation is related to environmental protection and cost control. Daily inspections need to pay attention to abnormal noise, leakage, instrument data, temperature and lubrication; regular maintenance emphasizes thorough flushing, lubrication management, sealing system maintenance and tightening and alignment. Scientific maintenance can avoid high costs and ensure continuous and efficient production.
Desulpurization Pump, as the “heart” of the flue gas desulfurization (FGD) system, is responsible for conveying highly corrosive and highly abrasive slurries. Its stable operation is directly related to environmental protection compliance, production continuity and your operating costs! However, harsh working conditions mean that even the most powerful equipment cannot be separated from scientific maintenance**. Ignoring maintenance can lead to reduced efficiency and increased energy consumption, or even sudden failures and fines for non-stop operation, which is very costly!
1.Daily inspection: prevent problems before they happen
1. “Listen” for abnormal noise: monitor bearing noise, impeller cavitation sound, and abnormal vibration during operation. Abnormal noise is often a precursor to failure!
2. “Check” for leakage: Check the shaft seal (machine seal or packing) for leakage signs (slurry seepage, crystallization) every day. Check flanges and valve connections.
3. “Observe” instruments: Record and monitor current, voltage, inlet and outlet pressure, flow, and vibration values. Analyze abnormal fluctuations in time.
4. “Feel” temperature: Check the bearing seat and motor housing temperature by hand touch (under safe conditions) or infrared thermometer to see if it rises abnormally.
5. “Observe” lubrication: Check the oil level/grease amount, oil quality (whether it is emulsified or contaminated), and add oil/grease according to the cycle.
2.Regular maintenance: take the initiative to extend life
(1). Thorough flushing (top priority!)
Flushing is a must when shutting down! Every time the pump is shut down (regardless of plan or failure), the pump chamber and connected pipes must be flushed immediately and thoroughly with clean water (or process water) (at least 15-30 minutes) until the discharged water is clear! Long-term standby pumps should be rotated and flushed regularly.
(2). Lubrication management
① Strictly replace lubricating oil/grease according to the manufacturer’s manual cycle and brand. Contaminated, emulsified, and deteriorated grease are bearing killers!
② Bearing grease lubrication: Pay attention to the amount of grease injection. Too much will cause overheating, and too little will cause insufficient lubrication.
(3). Sealing system maintenance
① Mechanical seal: Ensure that the pressure and flow of flushing water/blocking water (Plan 32/53/54, etc.) are normal and the water quality is clean (anti-scaling and clogging). Check the sealing liquid level/pressure regularly.
② Packing seal: Regularly check and appropriately adjust the tightness of the gland (allow a small amount of dripping cooling), and replace it in time if it is severely worn. Ensure normal supply of shaft seal water.
4. Tightening and alignment
① Regularly check and tighten key connectors such as anchor bolts and flange bolts to prevent loosening and vibration.
② Regularly check the pump-motor alignment (especially after overhaul or relocation). Misalignment is the culprit of vibration and bearing damage.
Summary
The maintenance of desulpurization pumps is not a trivial matter, but a core management link to ensure stable production, control operating costs, and fulfill environmental protection responsibilities! Incorporate this “golden manual” into your daily routine to keep your desulfurization pumps strong and powerful, and escort green production!
