The temperature required for the evaporation of brackish water is getting higher and higher
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This post was last edited by sunjl1981 on 2013-1-6 at 22:03. The brine concentration process in our company’s chlor-alkali project has just started operating on a full scale; it has now been in operation for 3 months. Initially, all parameters related to temperature were normal and everything ran smoothly. However, after 3 months, various problems began to arise – more and more heat is required to carry out the process. The designed operating temperature for the evaporator is 138°, but we now need to reach 158° in order to evaporate the brine from 210 g/l to a concentration of over 290 g/l. What could be the reason for this? Please help analyze it Thank you? ? ? 1. Three falling film evaporators 2. A flash evaporation tank 3. 2 vacuum pumps to pump steam to the condenser for condensation # + + . hcbbs
This post was last edited by limingshuguang on 2011-5-20 at 18:51. Isn’t it scaling in the evaporator’s tube bundle? And secondly, could there be a problem with the vacuum system?
There are no issues with pipe scaling, vacuum level, steam pressure, or DCS control; the tests also show no problems. Thank you!
The pipes were scaled; we have encountered this situation as well. After removing the evaporator and cleaning its tubes, the temperature dropped by 10 degrees at the same salt concentration.
Well, I’ve found the reason; hehe, correct
May I ask which company the original poster works for? Could you share your production process?
What was the problem found as a result? ? Share it
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