Prepn. of potassium sulphate and hydrochloric acid - by reacting sulphuric acid, potassium chloride and hydrochloric acid soln. of potassium salts, then adding water and methanol

摘要

The prepn. of potassium sulphate and hydrochloric acid comprises (a) reaching H2SO4, KCl and an HCl soln. of potassium salts at 60-150 deg C to produce a potassium hydrogen sulphate dispersion or soln. and hydrogen chloride which is sepd. and recovered; (b) dissolving the potassium hydrogen sulphate dispersion or soln. obtd. in (a) in water at 60-150 deg C to prepare an aq. soln. of potassium salts opt. after the addn. of KCl to the dispersion or soln.; (c) adding methanol to the aq. soln. of potassium salts obtd. in (b) and pptg. and (6pp Dwg.No.0/0)