In-depth removal of calcium and magnesium from chlor-alkali primary brine
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In-depth removal of calcium and magnesium from primary brine in chlor-alkali production helps to extend the operational life of resin towers. Those with experience in implementing this approach are requested to share their insights; our company is interested in carrying out this project
This post was last edited by huapiaoxu521 on 2015-7-20 16:10. Do you need to analyze the calcium and magnesium ion levels?
Eradicate with phosphate? ? ? Things that seem successful are still kept secret, right?
I heard that Xinpu uses this process; I’m not sure how effective it is. It’s said to be some kind of phosphoric acid-based substance that reacts with the calcium in the solution, reducing the calcium content in the brine. This, in turn, reduces the load on the resin tower, thereby extending its service life. The problem is the control of these process parameters; I’m not sure how to handle it, so I’m waiting for an expert’s brief answer. . . . . . .
Tests were once conducted; the calcium removal effect was good, but it was difficult to control the excess levels
Add salt water and phosphoric acid, then filter through a Kai membrane
Industrial tests were conducted to replace sodium carbonate with phosphates; the removal of calcium and magnesium from brine was effective, but there was a lot of sludge at the Kai membrane. However, at the resin tower, the calcium and magnesium removal through resin exchange is ineffective, and no abnormal changes were observed in the tank voltage (the voltage might have increased slightly during the initial tests, but it returned to normal after operation was stopped). There are many influencing factors. The cause cannot be determined).
Have experiments been conducted using phosphates in the ceramic membrane process?
Replace sodium carbonate with phosphate to control phosphates