What kind of pump is suitable for transporting foam?
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Once the feeding temperature in the open-reactor tank rises, a layer of foam forms on the surface. Defoamers have not worked effectively; I want to pump this foam from the top into another tank, so that once the temperature drops it will turn back into a liquid and can be removed. What type of pump would be suitable for this purpose? I tried using a pneumatic diaphragm pump before; I’m not sure whether it’s because the pump is a bit too small or due to some other factor, but the pumping performance was very poor – only a small amount of liquid could be drawn out each time. Do any of you experts have any good suggestions? Thank you
To transport foam, pumps that can handle gas-liquid mixtures are generally required. Generally, vortex pumps, screw pumps, or certain specially designed pumps are chosen; these can pump foam while minimizing cavitation issues caused by foam breakup. Considering that foam is a lightweight substance on an open reactor, you might need a pump with strong suction power that isn’t sensitive to incoming air. Pneumatic diaphragm pumps are suitable for handling foam, but if the performance was poor previously, it may be due to an insufficient pump size or a diaphragm material that is not appropriate for your process medium. It is recommended to choose a larger pneumatic diaphragm pump or consider using a pump with foam control functionality. Also consider whether the pump’s material is compatible with the chemical properties of the medium, and whether the pump’s adjustability can meet your process requirements. .
It would be best to send a video showing the actual conditions on site, which will facilitate discussion; pumping may not necessarily be the necessary solution. For reference.