Separate sulfuric acid an!
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During our production process, sulfuric acid AN is generated in the mother liquor, which is intended to be reused as an important raw material. However, as the number of times the mother liquor is recycled increases, the concentration of sulfuric acid AN also rises, which is detrimental to our production processes. So the best approach would be to isolate anhydrous sulfuric acid from it. Are there any good methods for this?
This post was last edited by zhjnavy015 on 2009-11-23 at 11:42. I’m not sure whether the mother liquor is sensitive to temperature; if not, multi-effect evaporation could be considered. We can discuss this further at zhjnavy015@163.com
A similar situation occurs in the wastewater treatment process of the monosodium glutamate industry. It is necessary to consider the heat sensitivity of the material. Multi-effect evaporation is a good choice. After evaporation, when the concentration of the output reaches a certain level, anhydrous sulfuric acid can be separated using a centrifuge. If the organic content of the feed liquid is high, the evaporated condensate will contain a certain amount of COD and requires further treatment.
This post was last edited by *a*ebing on 2009-12-15 at 11:22. The mother liquor can be frozen, and sulfuric acid an will crystallize out for separation
Freezing crystallization – at what temperature will complete crystallization occur?
Complete crystallization is not possible; only by this method can the amount of ammonium sulfate in the mother liquor be kept within a certain range