Management Measures and Recommendations for the Operation of Vacuum Belt Filters
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The filter cloth in vacuum belt filters has a relatively short service life; please provide some suggestions and methods for optimizing the operation of vacuum belt filters. Thank you.
1. Ensure the filter cloth is thoroughly rinsed clean. 2. Regularly inspect the bearings, especially those of the alignment rollers. 3. Set up monitoring to address any deviation of the filter cloth promptly. 4. The deviation corrector is equipped with an alarm to promptly alert operators when the filter cloth deviates from its position.
Timely maintenance: replacing idler rollers, applying tape, repairing alignment devices, and so on； Regular inspections: Operators should carry out frequent checks and address any abnormalities promptly; even a small issue that goes unnoticed can lead to the filter cloth being damaged
“\"The service life of the filter cloth in vacuum belt filters is relatively short\" – does this mainly mean that the filtering efficiency deteriorates after it has been in use for a while? Issues related to equipment and management were discussed a lot in the earlier floors; they are also problems that occur frequently. From a process perspective, here are my personal views: 1. The flocculant commonly used is polyacrylamide, and there are four types of polyacrylamide, each suitable for different applications. 2. High temperatures can generally destroy the polyacrylamide molecules, thereby undermining the flocculation effect. 3. After the filter cloth has been in use for some time, the gaps in it inevitably widen; therefore, it is necessary to increase the concentration of polyacrylamide accordingly, taking into account this factor as well as the concentration of the slurry water. 4. Changes in the type of coal used for gasification can lead to changes in the inorganic salt ions in the slurry water, which significantly affect the effectiveness of the flocculant. In any case, this is purely my personal opinion; please point out any mistakes. Thank you
The simplest method used in our factory is to clean it during the downtime of the filter. Generally, it is rinsed for about 24 hours. Try to use one; rinse the spare once it’s been used!
In addition to equipment maintenance, the process operation requires stability, with the rotation speed and processing capacity being matched, and the thickness of the filter cake should be around 1 centimeter. If it becomes too thick or too thin, it needs to be adjusted promptly.