Crystallization problems in sodium carbonate solution
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When the concentration of the sodium carbonate solution exceeds 25%, severe crystallization occurs in the pipes after transportation, and the section from the outlet of the storage tank to the valve also gets blocked. How should this be addressed? ?
There’s no other solution; one can only reduce the concentration appropriately or increase the temperature accordingly. Or flush the delivery pipeline regularly.
Check the solubility curve of sodium carbonate – it’s not the case that higher temperatures are always better. It is recommended to carry out the process continuously, as this can slow down the crystallization rate.
Due to the long period of time the solution remains at rest, a concentration difference can develop between the upper and lower layers of the solution, which leads to crystal formation in the bottom of the tower. Could considering raising the temperature of the solution or adding agitation be an option?