The propylene pump never reaches its desired flow rate – what should be done?
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The propylene pump never reaches its desired flow rate – what should be done? The outlet is equipped with flow restrictions and air release mechanisms; when pumping such a volatile medium, what should be done after the pump is emptied? What should be done if the medium contains water and freezes as well? Please give me some advice. Thank you!
It is necessary to figure out what exactly is causing the insufficient flow rate: 1. Inadequate supply of material; 2. Blocked pipelines; 3. The pump does not generate sufficient pressure (or the pressure generated is not adequate, and the operating range is exceeded). To address the issue of vaporization that leads to pump vacuuming, one can refer to the inlet pressure and temperature requirements specified in the design documents. Water freezing usually results from improper process operations, so improving these operations is necessary； At the same time, pipeline heat tracing measures
If the flow rate still doesn’t increase even with flow restriction, check whether there is air in the inlet pipeline.
Is vaporization eliminated and is the tank pump thorough? Is there any micro-leakage in the piping (especially at static seals and flanges)?
Try increasing the pressure in the raw material tank. Method: Turn on the reflux first, and do not discharge it outside yet