Crystallization issues in double-alkali desulfurization
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In the double-alkali desulfurization process, sodium sulfate crystals often form and accumulate in tanks, pipes, and equipment, which can lead to blockages. How do you deal with this issue?
There is no perfect final solution; at a certain point, some water must be diverted to create a path for it to flow out.
Draw out 1-2% of the circulating fluid and heat it； Proceed with precipitation before entering the system
If you don’t want to see sodium sulfate crystals, you need to control the concentration of sodium sulfate. It’s just the circulating fluid being discharged outside. Or add less alkali
It seems that sodium sulfate has precipitated in a saturated state. I agree with the views expressed by those above; it is possible to remove some of the water before saturation occurs and replace it with fresh water, after which the wastewater containing sodium sulfate can be evaporated and crystallized