The boiling point of the material is low; how can cavitation in the pump be prevented?
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The materials we use have a low boiling point of 40°C – how can we prevent cavitation in the pump? I’m urgent!
Lowering the temperature and increasing the pressure are theoretically feasible methods, but they may not be practical in reality, as the medium itself has a operating temperature within the device, and this cannot be changed arbitrarily； The pump inlet also has pressure limits; it cannot be increased arbitrarily, only to an appropriate extent. Moreover, the entire system cannot be upgraded just by simply increasing certain parameters. If it is truly impossible to meet the requirements, then considering a pump with a lower net positive suction head could be an option.
Here is a solution: Boiler thermal deaerators are usually installed at a high position, with the aim of preventing cavitation in multi-stage feed water pumps.
Try using a metering pump instead of a centrifugal pump
What was said on the 2nd floor makes some sense; since the boiling point of these materials is low, certain measures must be taken during storage and transportation – probably by reducing temperature and increasing pressure during transport.
The first method is to lower the temperature of the material; the second is to increase the installation height of the storage tank; the third is to increase the inlet pressure.
Consider adding a condenser to the pipeline, using chilled water as the cooling medium, increasing the height of the storage tank, and including U-bends in the pipeline design.
“What does “increase the U-shaped bend” mean? Could you explain it?
With a boiling point of 40 degrees, it should be considered a hazardous chemical; proper insulation for the pipes and storage tanks is necessary, as well as an appropriate increase in the pressure within the storage tanks, for example by filling them with nitrogen
The propylene in our device is similar to the medium you mentioned; the temperature of the spherical tank is also around 40 degrees, and the boiling point is similar as well. We use insulation measures, and the pressure is 1.6 megapascals. The material entering the device must also be at a certain temperature; heat exchange takes place in a heat exchanger to raise the temperature. If that’s not sufficient, heating via jackets can be used.