Establishment of Pall filter layer and determination of blowback time

When using the Pall filter for the first time, it is important to pay attention to the establishment of the filter layer, as the filtration of the Pall filter mainly relies on the establishment of the filter layer to filter out smaller particles. Only a well established filter layer can ensure the long-term operation of the filter. When the device is first used, the filter must reach a certain differential pressure before starting to blow back according to the size of the differential pressure. The first few blowbacks are important. After blowback, check whether the differential pressure of the filter is greater than the original differential pressure. Moreover, the difference between the differential pressure after blowback and the original differential pressure is almost constant. When the difference between these two numbers reaches a constant value (as shown in the △ P-time table), the filter layer of the filter is fully established, and the filter can be used well to avoid a large amount of catalyst loss.The main filter product names of China Strainer Network include:Al-alloy Shell Strainer,Antifouling cut off valveAutomatic Back Wash Strainer,Companding Pull-Rod Y Type Strainer,Compressed Air High-efficiency Strainer,Double Sealing Self-purification Anti-reversed Water Sealing Valve

Determination of Pall filter blowback time

After the Pall filter is fully established in the filter layer, it takes some time for the filtration differential pressure to reach the set differential pressure without blowback. We can measure this time and record it, and then divide the recorded time by the number of filter groups to obtain the blowback time for each group of filters. Excessive or insufficient blowback is not good for the filter. Excessive blowback is not conducive to the formation of the filter layer, causing the loss of small particle adsorbents. Insufficient blowback can easily form a large differential pressure, which is not conducive to gas circulation.

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