Bag filter
When the efficiency of the dust collector begins to decline, bag filter troubleshooting is the first step to solving the problem. A properly functioning baghouse system will achieve up to 999% efficiency. With proper monitoring and maintenance, the system can operate effectively for many years. However, when system dust collection efficiency begins to decline, early troubleshooting may help identify problems quickly that could otherwise lead to costly maintenance and downtime. A few common issues to be aware of when troubleshooting a baghouse system include:
Moisture is present in the air;
Dust bag material;
Improper installation of replacement parts;
Maintenance is not carried out as planned.
Moisture is present in the air;
Too much moisture entering a baghouse system can quickly lead to a number of problemsThe main one is the weakening of the dust bag, which leads to the leakage of the dust bag or allows the dust to pass through the bag completely, and eventually leads to the premature failure of the bag itself. Moisture can cause hygroscopic dust and particles to accumulate inside the bag, clogging the bag. Hygroscopic dust can also form hard, brittle lumps on the inner lining of the bag and will not be removed during cleaning.
Condensation is also a common occurrence of excess moisture**, especially in baghouses operating in warm, hot, or humid conditions. The system should be regularly inspected for excess moisture to prevent premature failure of the dust bag. Solutions range from installing appropriate filter media to purifying systems with warm, dry air.
Dust bag material;
The material used to filter the fabric of the baghouse will vary depending on the application requirements of the system. In short, the material used to filter the fabric must have the properties required for the application. Dust bags are as affected by the operating temperature of the collector as the characteristics of the particles being filtered. When the operating temperature exceeds the ambient temperature of the facility, the filter fabric must be heat-resistant. If the fabric used in the baghouse operates at high temperatures and has a low thermal threshold, the bag can overheat and tear, melt, or even catch fire.
Airflow characteristics must also be considered when selecting dust bags. If the bag type is the wrong type, the chemicals in the airstream can cause serious damage and premature failure of the bag. Gas composition is also affected by humidity and temperature, causing chemicals in the gas stream to condense on the dust bag. When installing the bag, the operator must ensure that the selected material has the right properties to prevent premature damage and failure of the bag.
Improper installation of replacement parts;
Ensure that replacement parts are properly handled and installed. The misplacement of the bag can put undue pressure on the bag, reducing its cleaning effectiveness and leading to premature failure. It is also necessary to install the dust collection skeleton correctly, and be careful not to bend or step on them when replacing the dust collection skeleton. Damaging any of these can lead to improper tension, leading to tears and stretching premature wear, reducing the strength and durability of the dust bag. Improper installation of air inlet air deflectors and ducts can lead to uneven airflow and wear out of the dust bag, further impacting the efficiency of the system.
Maintenance Schedule: The best way to avoid baghouse failures is to perform preventative maintenance. Regular preventative maintenance of your baghouse system ensures that your equipment is running efficiently, provides a safe working environment for your employees, and helps avoid extensive and costly repairs.