Seeking help with the selection of an ethanol unloading pump
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I’ve been assigned a project, and the feasibility study only states that a positive-displacement pump should be chosen to address the unloading issues. Could you advise on what factors should be taken into consideration when selecting a specific type of positive-displacement pump?
Is it necessary? We are all centrifugal pumps; we’ve been around for over a decade
Well, I consulted with some seniors in the company, who said that it’s best to choose a pump that can handle both gas and liquid flows; they recommended pneumatic diaphragm pumps. However, the project team isn’t considering pumps driven by air sources... I was wondering if centrifugal pumps are prone to cavitation problems in your case?
Cavitation isn’t that serious; there’s no need to make a big deal out of it
Sliding vane pumps are the preferred choice for transporting gas-liquid mixtures, as they have excellent self-priming capabilities. If a centrifugal pump is used and reaches a vacuum condition, it is prone to damaging its mechanical seal. The poster can leave an email address; I’ll send the relevant information to them
A centrifugal pump can be used, but it is necessary to consider stopping the pump promptly when the inlet liquid level is low; generally, cavitation is not a problem. If a positive-displacement pump such as a gear pump is used, the flow rate is relatively low ； Diaphragm pumps are prone to leakage.
Agree with the 5th floor – a sliding vane pump will work.
381958774@qq.com, thank you very much