بوليان مرشح القماش
During actual operation, many industrial users encounter problems such as filter bag clogging, frequent damage, and shortened service life. These issues not only affect the production environment but also significantly increase maintenance and replacement costs. This article analyzes common failure causes and provides practical solutions to help improve system performance.
1. Causes of Filter Bag Clogging
Clogging is typically characterized by dust accumulation on the filter bag surface that is difficult to remove.
Common causes include:
First, high moisture content in flue gas, causing dust to absorb moisture and adhere to the filter bag surface;
Second, operating temperatures falling below the dew point, leading to condensation;
Third, improper cleaning system design or parameter settings, resulting in insufficient cleaning.
Solutions:
Improve flue gas pretreatment to ensure operating temperatures remain above the dew point with an adequate safety margin. Optimize cleaning frequency and pressure to achieve effective dust removal while minimizing stress on the filter media. In addition, selecting membrane-coated filter media with smoother surfaces can significantly reduce dust adhesion.
2. Main Causes of Filter Bag Damage
Filter bag damage is commonly related to mechanical, chemical, or thermal factors. For example, rough cage surfaces or improper installation can cause excessive mechanical wear. Corrosive components in flue gas may degrade filter media performance, while long-term or sudden over-temperature operation can lead to material hardening and brittleness.
Solutions:
Choose filter media with corrosion and temperature resistance matched to actual operating conditions. Ensure filter cages are of high quality and properly installed. Installing reliable temperature monitoring and alarm systems can effectively prevent damage caused by abnormal operating conditions.
3. Factors Leading to Short Filter Bag Service Life
Beyond visible failures, excessively high filtration velocity, overly frequent or aggressive cleaning, and poor-quality filter media can all shorten filter bag service life. Proper control of filtration velocity and cleaning cycles, adjusted according to dust characteristics, plays a critical role in extending service life.
4. Daily Operation and Maintenance Recommendations
Through proper media selection, standardized operation, and refined maintenance practices, users can significantly extend filter bag service life, improve dust collection system stability, and ultimately reduce operating costs.
