How to solve the problem that the third effect of the three-effect evaporator is prone to scaling?
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As shown in the picture, the third effect of the three-effect evaporator was scaled and blocked. A new one was customized, and it started to scale again after one day of operation. What we evaporate is copper sulfate liquid, and the low copper material liquid containing about 25g of copper is concentrated to about 50g for electrolytic copper. Feed acid 70g, discharge 100g. The newly installed one started to scale after only one day of operation. What is the reason? This kind of white scale is acid and alkali resistant and is particularly troublesome to clean. I still don’t know what this is, I’m depressed.
The reason for the scaling in the third effect of the three-effect evaporator may be that the copper sulfate liquid contains some difficult-to-volatile substances, which react and crystallize under high temperature for a long time to form scaling. As a solution, you can try the following measures: 1. Increase the cleaning frequency and clean the third effect of the three-effect evaporator regularly. ； 2. During the production process, pay attention to controlling the concentration and load of the feed acid to avoid accumulating too much difficult-to-volatile substances. ； 3. Try using chemical cleaners or high-pressure water guns for thorough cleaning ； 4. Consider using anti-scaling agents to prevent scaling. .
It shows that your craftsmanship is not reasonable.
This post was last edited by a125398119 on 2023-4-27 08:40 Are you following the 1-2-3 effect? Would it be better to feed materials from three effects, discharge materials at high temperature from one effect, that is, 3-2-1, and discharge materials at high temperature in countercurrent? WeChat 18669833633 for further discussion
Three-effect countercurrent uses a discharge pump to make a crystallization tank. You need to provide more information about the specific process.