Selection of the distillation column bottom circulation pump

Thread Content

To address the issue of poor circulation in the reboiler, it is planned to use a circulation pump to directly feed the material at the bottom of the tower into the bottom of the reboiler in order to achieve forced circulation. I would like to seek advice from experts regarding the selection of a suitable pump: The system operates under vacuum conditions at around -0.095 MPa; the temperature of the material under these conditions is approximately 160°C. The installation location is about 3 meters above the liquid level. I am looking for a pump type that can function properly under vacuum conditions, with the material at its boiling point, and considering that the vacuum level inside the reboiler will be about 5 KPa lower than that of the feed. I need a pump with a capacity of 12 cubic meters per hour that can meet these requirements. Thank you very much for your guidance!