Sodium sulfate evaporation
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When evaporating sodium sulfate solutions, why is 316L always chosen? Is it acceptable to use 304 or carbon steel instead?
316L can also be dangerous over time! 304 won’t work!
Pure sodium sulfate should be fine, but generally speaking, there’s chloride in water; carbon steel gets corroded within two days.
I agree with what you said. 316L is generally acceptable, as long as the chlorine level isn’t too high. With stricter environmental regulations, concentration and crystallization may be the only viable solution for such saline wastewater……
If the pH remains above 10, 304 can be used
Measure the chloride ion concentration as well as the evaporation temperature in order to select the appropriate material; if the concentration is too high, 316L is not suitable, and materials such as 904L, SMO254, TA1, TA2, and TA3 must be used instead