Can a centrifugal pump be used for 100-degree wastewater?
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Do we not need to consider water vapor? Can the centrifugal pump be used?
I’m not familiar with matters in this area, so I dare not say too much. If there are defects such as cavitation, corrosion, or wear, I can handle them.
Of course it can be used; the boiler water pumps on site use centrifugal pumps for transportation, as the boiling point of water is directly proportional to pressure – the higher the pressure, the higher the boiling point. So during pumping, water at 100 degrees isn’t yet at its boiling point
It can be used; boiler water pumps are generally centrifugal pumps. The issue of water vapor hardly needs to be considered, as the extraction point of boiling water is below the liquid surface, so this aspect is basically irrelevant.
An R-type can be used; not all centrifugal pumps are suitable for this purpose. With ordinary centrifugal pumps, the pumping capacity suffers significantly when the temperature exceeds 80 degrees
It depends on the pressure at the pump inlet that the process can provide and the suction performance of the pump itself. Even at 100°C, it’s completely fine as long as the pressure is relatively high, such as 2 kg of gauge pressure.
Yes, the inlet must have an appropriate pressure, that is, a sufficient filling height; otherwise cavitation is likely to occur
The saturated vapor pressure of water changes with pressure; you can look up information on this topic first
Place the storage tank at a height of over 10 meters to ensure it is feasible under positive pressure at the inlet
Water at a temperature of 102–104 degrees in the deaerator can be transported
Calculate the NPSH; it should be greater than the required NPSH for the pump. The data at 100 degrees is not sufficient, as there is also pressure and a height difference to consider