A dry scrubber is a reliable and cost-effective solution for controlling industrial air pollution. However, like any equipment, its performance and lifespan depend on proper maintenance. Regular inspections and preventive care can help ensure your dry scrubber runs efficiently, avoids costly breakdowns, and continues to meet environmental regulations.
This article provides a practical maintenance checklist along with tips to help you maximize efficiency and extend the life of your dry scrubber system.
Dry Scrubber Maintenance Checklist
1. Sorbent Quality and Storage
- 🢚 Always use high-quality sorbents (lime, sodium bicarbonate, or activated carbon).
- 🢚 Store sorbents in a dry, moisture-free environment to prevent clumping.
- 🢚 Monitor sorbent feed systems for blockages or uneven dosing.
2. Sorbent Injection System
- 🢚 Inspect feed nozzles and injectors for clogging or wear.
- 🢚 Check and calibrate dosing equipment for accurate chemical feed rates.
- 🢚 Ensure uniform distribution for maximum pollutant capture.
3. Gas Flow and Ductwork
- 🢚 Inspect ductwork for leaks, corrosion, or blockages.
- 🢚 Verify that gas flow rates are within the recommended range.
- 🢚 Clean accumulated dust to avoid pressure drop and reduced efficiency.
4. Filters and Collection Systems
- 🢚 Check fabric filters, baghouses, or ESP units connected with the scrubber.
- 🢚 Replace filter bags when pressure drop increases.
- 🢚 Inspect for dust buildup and clean regularly.
5. Instrumentation and Controls
- 🢚 Calibrate sensors, gauges, and flow meters regularly.
- 🢚 Verify alarm and monitoring systems are functioning.
- 🢚 Keep a logbook of performance data to track efficiency trends.
6. Routine Inspections
- 🢚 Conduct weekly visual checks for signs of wear, leaks, or abnormal vibration.
- 🢚 Schedule quarterly preventive maintenance with detailed system checks.
- 🢚 Carry out annual shutdown inspections for in-depth cleaning and part replacement.
7. Spare Parts and Emergency Readiness
- 🢚 Keep critical spare parts (nozzles, valves, filters, and sensors) in stock.
- 🢚 Train staff on emergency procedures for unplanned system failures.
Tips to Maximize Efficiency and Lifespan
- 🢚 Use proper sorbent-to-gas ratios for optimal pollutant capture.
- 🢚 Avoid overfeeding sorbent—it increases operating costs without extra efficiency.
- 🢚 Upgrade control systems for real-time performance monitoring.
- 🢚 Partner with a trusted service provider for annual audits and overhauls.
Conclusion
A well-maintained dry scrubber system ensures not only maximum efficiency in removing pollutants but also long-term reliability. By following this maintenance checklist and preventive care tips, industries can achieve regulatory compliance, cost savings, and longer equipment lifespan.
Investing in proactive maintenance today means cleaner air and fewer operational disruptions tomorrow.