What kind of pump is used for reflux in low-temperature light hydrocarbons?
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Light hydrocarbon temperature: -60°C; main components: C3C4C5; head: 200 meters; flow rate: 2 cubic meters per hour. We are currently using shielded pumps, but the cooling return temperature is quite high. We would like to replace them with pumps that generate less heat and have good flow rates. Please recommend some options for us; thank you!
Measurement channel pump (mechanical seal type or magnetic type), diaphragm metering pump
At this temperature, with this flow rate and head, and given this type of medium, if we ignore the cost of the equipment and consider only the heat generated by backflow, then in fact many pumps are better than canned pumps – as the heat produced by canned pumps must be transferred to the medium being transported. Any ordinary centrifugal pump can eliminate your risks, but you may have other issues to address
I’ve never used this kind of pump before, so I don’t know how it works!
These are special low specific speed pumps (with low flow rate and high head); their rotation speed is typically 1450 RPM, which results in low magnetic loss and minimal temperature rise. They require a very small net positive suction head and possess self-priming capability.
Two additional points: 1. Magnetic drive and mechanical seal structure are two available options; 2. Gas-liquid transportation capacity