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When acid is absorbed, the surface level drops

2019-09-22View Original

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What is the reason why the acid concentration is 98.5% when production is stopped, but drops to 81% (on the surface) when production resumes after a week? The outlet of the suction pump has also been corroded; there’s a lot of black acidic sludge. I’d appreciate some advice
Reply #22019-09-23
I’m curious how the surface acid concentration of 81 was determined
Reply #32019-09-23
I’m curious how the surface acid concentration of 81 was determined
Reply #42019-09-23
I’m curious how the surface acid concentration of 81 was determined
Reply #52019-10-07
It is likely that the dilution water valve in the suction circulation tank is not closing properly, which is causing this issue
Reply #62019-10-14
When the unit is shut down for an extended period of time and no regular cycling takes place, low-concentration acids that absorb moisture accumulate in the tower. It is necessary to replace these acids promptly, conduct analyses, or carry out periodic testing and acid replacement; otherwise, the pumps may be corroded. Generally, the acid concentration changes significantly after a shutdown of 3 days or more, and this problem is even more severe when the tower is not sealed, so it requires close attention.

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