摘要:
探讨了在无水相中工业浓硫酸分解氯化钾固体时反应的温度、原料摩尔配比、时间以及硫酸质量分数对硫酸氢钾产品的影响,并做相关实验探究尾气氯化氢气体吸收问题.通过单因素实验、正交试验得出:工业浓硫酸与氯化钾反应制备硫酸氢钾的最优工艺条件为温度80°C,原料摩尔比1.1:1,反应时间60 min,硫酸质量分数70%,此时反应转化率约为92%,固相中KHSO4质量分数约为97.5%,KCl质量分数约为2.5%,H2SO4质量分数约为0.1%.其中,对实验影响优先次序为温度>原料摩尔配比>反应时间>硫酸质量分数.尾气HC1气体吸收效果较好.实验制备得到的硫酸氢钾产品完全符合工业标准.%The influences,including temperature,molar ratio,time and mass fraction,in potassium chloride with industrial sulfuric acid to preparation of potassium bisulfate were studied.Finally,some absorption research about the exhaust HCl was conducted.Through single factor and orthogonal experiment,the optimum condition of industrial sulfuric acid with potassium chloride to preparation of potassium hydrogen sulfate was temperature 80 °C,molar ratio 1.1:1,time 60 min and mass fraction 70%.And the conversion was about 92%,the solid content was about KHSO4 97.5%,KCl 2.5%,H2SO40.1%.What's more,the experimental affect priorities was temperature,molar ratio,time,mass fraction.The HCl gas absorption effect was good.Potassium hydrogen sulfate products was in full compliance with industry standards.