A problem with saline water... Everyone, please share your suggestions
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This post was last edited by sunjl1981 on 2013-1-6 at 22:28. The plate heat exchangers used for handling primary brine in our factory tend to scale up easily, which prevents them from functioning properly… Technical improvements are necessary. We would like to hear from everyone about how they handle brine heat exchange; we need good methods. Thank you in advance. # + +
Our heat exchangers are regularly taken apart and cleaned
We use plate heat exchangers and carry out regular pickling with low-concentration hydrochloric acid
First, address the water quality issue; secondly, clean the heat exchangers regularly using low-concentration hydrochloric acid. A 1-millimeter layer of scale on the heat exchangers reduces heat transfer efficiency by 30%
First, it is necessary to figure out why scaling occurs and whether there are any ways to prevent or delay it; if acid cleaning is used, amino sulfonic acid is recommended.
First, figure out the cause of scaling. Theoretically, brine water mainly consists of dechlorinated fresh brine, steam condensate, regenerated wastewater, etc. Calcium and magnesium levels should be low, so scaling should not occur easily. Does the poster need to add a large amount of production water? Our factory has been in operation for 2.5 years without such an issue occurring once. If scaling is really severe, it’s actually not necessary to use a heat exchanger; in many places I’ve seen steam pipes being directly inserted into the salt dissolving tank. The original poster might want to take a look.
We initially used plate heat exchangers, which also suffered from severe scaling; later we switched to shell-and-tube heat exchangers, cleaning them with high-pressure water guns once every six months, with good results.
The heat exchanger should be fine; its structure isn’t complicated.