Selection of pumps under vacuum conditions
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I would like to ask experienced colleagues: In a reaction vessel under vacuum conditions (-0.09 MPa), which is a jacketed vessel heated by steam in the jacket, in order to ensure uniform distribution of the material, and given that the material is highly corrosive, no mixer has been used. Instead, a small-circulation system based on pumps is employed – that is, a pump is used to draw the material out from the bottom of the vessel, and the outlet of the pump is connected to the top of the vessel so that the material returns back inside. Under such circumstances, how should the pump be selected? How to choose the head? In this case, how is the pump performing?
The characteristics of the material are clearly specified; we have previously handled projects requiring very high vacuum levels!
A high-vacuum pump can be used for this purpose; the following basic parameters need to be provided: 1. The temperature of the medium, 2. Its viscosity at operating temperature, 3. The material required for the pump, 4. The volume of fluid to be circulated, 5. The height and length of the circulation piping, 6. Other properties of the material
It is a self-circulating system that does not flow to other locations; only the pump’s corrosion resistance needs to be considered