| 摘要 |
<p>PURPOSE:To manufacture potassium sulfate continuously, economically and efficiently by installing a horizontal type muffle furnace having a ceilling of circular arc form and an agitator sliding across the furnace bottom. CONSTITUTION:In the manufacture of potassium sulfate and hydrogen chloride, the endurance life of a furnace used is elongated and the retention time in the furnace is shortened as follows: for example, muffle furnace 1 is provided with two agitating shafts 8 each having agitating vanes 7 which mix a mixture for reaction powerfully and rapidly by reversible agitation without sticking it to the furnace bottom and slide across the furnace bottom. Furnace 1 is placed in outer case 2 provided with heat insulated portion 3, heating hot gas supply inlet 5, gas exhaust port 6, partition wall 9, starting material charger 10, discharger 11 and hydrogen chloride gas drawing-out pipe 12. Potassium hydrogensulfate and potassium chloride are charged between the inlet end of furnace 1 and the central end with charger 10 and heat agitated. Thus, 96-98% of the total reaction can be accomplished easily at 300-400 deg.C. Hydrogen chloride is drawn out of pipe 12, and the reaction product is taken out with discharger 11.</p> |
