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What should you pay attention to before the bag filter is operated?
The bag filter is a dry dust collection system designed to capture fine, dry, and non-fibrous particulate matter. It utilizes woven or non-woven fabric as the filtering medium. When contaminated air passes through the filter, larger particles settle due to gravity and fall into the ash hopper. The finer dust particles are retained by the fabric, allowing clean air to pass through.
The structure of a bag filter typically includes an upper chamber, a middle chamber, a lower chamber (also known as the ash hopper), a cleaning system, and an ash discharge mechanism. Proper functioning of the bag filter depends not only on the selection of appropriate filter media but also on the efficiency of the cleaning system, which plays a critical role in maintaining performance. The cleaning method is one of the key features of the bag filter and is essential for its smooth operation.
The effectiveness of the bag filter directly impacts its ability to be integrated into production lines. If it doesn’t operate correctly, it can quickly lose efficiency. Therefore, during the trial run, several important aspects should be carefully monitored:
1. Check the installation of the dust filter bags to ensure they are properly secured, with no signs of sagging, loose openings, or wear. This can be visually inspected by observing the chimney exhaust after commissioning.
2. Monitor for condensation inside the bag room and ensure the ash discharge system is clear. Blockages or erosion could negatively affect the main equipment’s performance.
3. Adjust the cleaning cycle and duration, as this significantly affects the overall function and operation of the dust collection system.
4. Verify that the airflow, pressure, and temperature at each test point match the design specifications.
5. Check the fan’s rotation direction, speed, bearing vibration, and temperature to ensure everything operates smoothly.
If the cleaning process is too frequent, it can lead to damage such as leaks or ruptures in the filter bags. The time between two cleanings is called the cleaning cycle, and it should generally be set long enough to allow the system to operate under optimal resistance levels. Understanding the properties and concentration of the dust is crucial in determining the right cleaning schedule and timing. During testing, adjustments should be made to achieve the best possible cleaning parameters.
Sudden temperature changes in the gas being treated can cause the fan shaft to expand or contract, leading to imbalance and vibration. When the system stops, the temperature drops rapidly, and vibration may occur again when restarting. When a bag-type dust collector starts up, issues like abnormal temperature, pressure, or moisture levels often arise, potentially damaging the new system.
Keywords: Dongguan Waste Gas Project, Dongguan Waste Gas Treatment, Dongguan Waste Gas Treatment Equipment