What pump should be used for calcium chloride solution?
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For a calcium chloride solution at a working temperature of minus 20 degrees with a density of 1.17, what type of pump is suitable? What type of mechanical seal should be used?
For chloride corrosion, polypropylene, polyethylene, or polytetrafluoroethylene materials are recommended; if money is no object, titanium is the best choice. A centrifugal pump will do; packing seal is sufficient
Can a single-face mechanical seal be used? It seems that the perfluoropolymer pump doesn’t have a filler
Sure. However, the final design of the pump is also determined by the head requirement; if the required head is too high, a centrifugal pump is not suitable. The head needs to be calculated: https://bbs.hcbbs.com/thread-1764877-1-1.html
Fluorinated pump or a polymer-based wear-resistant mortar pump will work. My family does it
Our factory uses clean water pumps, but it is recommended not to use them. Because low temperatures can still easily cause damage! :(
A regular stainless steel centrifugal pump will do; that’s what we use in our factory. Chloride corrosion does not occur as rapidly at lower levels. If 316 is better.
At low temperatures, chloride corrosion is not severe
It has been done for the Lanzhou factory; 316L is sufficient
Austenitic stainless steel is sufficient for overcurrent components