【摘要】 文章运用连续流动法 ,在MSMPR结晶器中系统研究了石膏与氯化钾在浓氨介质中直接转化制硫酸钾 ,其工艺条件对硫酸钾结晶过程的影响规律 ,并借助粒数衡算原理得到硫酸钾在氨介质中的二次成核动力学方程式 :B0 =5 6 4 13× 10 8G3 3 2 0 8M0 0 559t n0 .2 92 8p ;其结果可为浓氨介质中石膏直接转化制硫酸钾工业化结晶器的设计与放大提供基础数据。更多还原

【Abstract】 The crystallization of K 2SO 4 from CaSO 4·2H 2O and KCl in the presence of ammonia has been studied in a continuous MSMPR crystallizer.The factors affecting K 2SO 4 crystallization,such as ammonia concentration,temperature,feed concentration,ratio of reactants and residence time have been investigated.With the help of population balance equation,the relationship among the nucleation rate,growth rate,suspension density and stirring rate was deduced as follows:B 0=5 6413×10 8G 3 3208 M 0.0559 tn 0.2928 p.The results give promise of forming the basis of a commercial crystallization process.更多还原