For the methanol tower bottom liquid pump, what type of pump do you all choose?
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Here, some manufacturers supply shielded pumps, some provide magnetic drive pumps, and there are also chemical process pumps
Chemical process centrifugal pumps; just found some similar ones
Ours doesn’t contain acid; it’s 100% methanol, with a very low flow rate
It depends on your requirements; if leak-free performance is required, magnetic pumps and shielded pumps can be used, or centrifugal pumps with a 53 flushing scheme can also be employed.
As a bottom of tower pump, it is preferable to choose a centrifugal pump rather than a canned motor pump; this is because the liquid transported by such pumps is from the bottom of the tank and is quite dirty, which can easily lead to blockages in the internal circulation channels of the canned motor pump and cause damage to it.
If it is 100% methanol, then a magnetic pump will suffice
The shielded pump used for methanol pumps in our unit
If there are no impurities, a magnetic pump will suffice; if there are impurities, a centrifugal pump is better