What is the summary of sodium hydrosulfide separation?
sodium hydrosulfide Conclusion
This method first separates crystalline salts such as Na₂CO₃ from the concentrated NaHS solution. The molten NaHS·H₂O is then directly solidified into flakes in a vacuum rake cooler before being automatically packed. As a result, the Na₂CO₃ impurity content is reduced from 2.4% to 0.3%. The cooling process occurs in a vacuum, minimizing oxidation due to air exposure and effectively preventing product degradation. The entire purification process is conducted in a closed system, preventing the release of irritating gases and avoiding secondary environmental pollution. The NaHS sodium hydrosulfide flakes are directly packed, eliminating contamination during storage. Additionally, this method is simple, requires minimal equipment, and is cost-effective.