Seeking help with pump selection
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The liquid pumped contains granular activated carbon, the temperature is 80°C, and the liquid tends to crystallize easily. I would appreciate it if anyone could advise me on which type of pump should be used Thank you
Theoretically, a screw pump, but in practice, a regular centrifugal pump can also be used
A wear-resistant centrifugal pump will suffice, but the pump should be equipped with crystallization-resistant pipelines or other protective measures.
For ordinary centrifugal pumps, do not use ordinary mechanical seals. Our low-alkali pumps use such ordinary seals; once the pump stops, the springs get crystallized, and when the pump is restarted, the seal leaks! ! !
If crystallization occurs, triple-screw and twin-screw pumps are not suitable as they have a high failure rate; it is recommended to use single-screw pumps
Reply to 1# ntzdwangyong: The key to solving this problem is to control the temperature of the material; the pump needs to be insulated to prevent the material from crystallizing. It is more appropriate to use a hose pump. Is granular activated carbon relatively hard? What is the particle diameter? A gear pump could be tried.
Insulation pumps should be used. To prevent crystallization, it is best to perform line cleaning after use, or to preheat the pump before starting it up. Due to crystallization, mechanical seals are not very suitable, especially those with multiple springs; in such cases, packing can be used