Process design for the production of potassium sulfate via the conversion of sulfuric anhydride
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I have been researching a potassium sulfate project recently; does anyone have any information on this topic? Urgent! Production of potassium sulfate via the anhydrous sulfuric acid conversion method: raw material requirements ； General information such as product quality and yield, as well as approximate investment costs, would also be fine; the design firm can also provide the engineering design.
Only experiments were conducted: using sulfuric acid, methanol, and potassium chloride to produce potassium sulfate; distilling to recover methanol; evaporating ammonium chloride; and returning the mother liquor. Additionally, when sulfuric acid and potassium chloride are reacted at 80 degrees Celsius, potassium sulfate is produced, while ammonium chloride is formed upon freezing. Mother liquor is returned. Potassium sulfate is produced by negative pressure evaporation of sulfuric acid; sulfuric acid is neutralized with ammonia to yield potassium hydrogen sulfate, and the mixture of sulfuric acid and potassium sulfate is used in agriculture. The quality obtained through extraction is very high, almost at military-grade standards; however, provided that the quality of the extractant is satisfactory, the loss is 0.1–2 grams per cubic meter. Ion exchange products are of military-grade quality; agricultural-grade ones are not cost-effective. Magnesium sulfate and potassium chloride alcoholic saturated solutions in agriculture can also be used to produce potassium sulfate.