The high-purity acid in our hydrochloric acid tanks always has excessive levels of calcium and magnesium ions
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This post was last edited by sunjl1981 on 2013-1-6 23:25. After our hydrochloric acid tank was repaired, why are the levels of calcium and magnesium ions in the high-purity acid inside the tank always above the acceptable limits? Could everyone help figure out what caused this? Are there any good remedies? # + + .
Give up, or find it some other use. The reinforcing glass fibers in the fiberglass-reinforced plastic tanks contain a large amount of calcium and magnesium fillers, while the lining layer of the acid tanks serves to prevent corrosion. Once this lining layer is damaged, the large amounts of calcium and magnesium present in the glass fibers and resin of the reinforcing layer will dissolve into the acid – and this is the core of the problem. A fiberglass tank that has been repaired cannot be restored to its original state, so it is still recommended that you discard it.
It is possible to re-polish the surface and then apply resin with a roller, but it’s more difficult to do so. You can ask the manufacturer whether it’s worth going through the hassle. Of course, the source of calcium and magnesium is the calcium and magnesium powder used as a filling material in the production of fiberglass storage tanks; therefore, when choosing a manufacturer, it’s important to check whether their products have a bluish color, as this indicates that too much calcium and magnesium powder has been used.
Take a look at your river water system to see if there are any valves that don’t close properly; (shouldn’t you have pipes that allow high-purity water to be used instead of river water when high-purity water is not available?)
It’s better to ask the manufacturer whether the material of your tanks is low-calcium and low-magnesium; consult them regarding repairs, taking into account the size of the tanks and the extent of the damage to determine whether repairs are worthwhile
:Lol, re-lining with a lactone layer – bisphenol A resins 901 and 907 both work; the key is to be willing to invest, right, Xiao Du?
Many of the hydrochloric acid storage tanks used for electrolysis have now been replaced with PE tanks. The advantage is that there are no issues related to calcium and magnesium; the downside is that the maximum capacity of each tank is 50 cubic meters (I’ve heard that some tanks now have a capacity of 80 cubic meters), and they are fixed-type equipment. After all, low-calcium-magnesium products still contain calcium and magnesium; if the manufacturer is unscrupulous, it is we who will suffer. For non-electrolytic hydrochloric acid, low calcium and magnesium content is generally no problem
You can first test the calcium and magnesium content in the water added to the synthesis furnace
What was said on the 2nd floor is correct; we have indeed encountered this problem as well. Since we use pure water when absorbing high-purity acids, we kept wondering where the calcium and magnesium came from. After hearing what the 2nd floor person said, it all became clear. Thank you!
We have the same issue. Switch to PE grooves quickly and you won’t face such problems