离子交换法分离氯化铵和氯化钾的实验研究  

Experimental Study on Separation of Ammonium Chloride and Potassium Chloride by Ion Exchange

作　　者：康仕芳[1] 范江洋[1] 靳风民[1] 罗建军[1] 张猛[1] 

机构地区：[1]天津大学化工学院,天津300072

出　　处：《海湖盐与化工》2004年第1期15-19,共5页Sea-Lake Salt and Chemical Industry

摘　　要：　文章针对我国钾盐生产行业中,经常出现的氯化钾与氯化铵混合体系,研究了离子交换法对氯化钾与氯化铵混合体系的分离情况,研究了分离所用的强酸性磺酸基阳离子交换树脂的各种性能,并用柱法测定了树脂对K+和NH+4的选择性系数,采用瓶点法测定了25℃离子交换平衡数据,并关联出在一定浓度条件下的固液平衡关系;同时建立离子交换固定床的传质数学模型,其数值计算结果与实验结果基本一致,为进一步的工艺研究提供了理论基础。The aim of this thesis was to investigate the separation of the mixture of ammonium chloride and potassium chloride by ion exchange technology. Ion-exchange columns were designed to investigate the separation of ammonium chloride and potassium chloride using strong-acid cation exchange resin. And the selective coefficient of the resin, the equilibrium data of potassium-ammonium exchange on the resin at 25℃ were also measured in the experiment. These experimetal data indicated the relation of liquid-solid balance at various concentration. And the method of limited difference was applied to describe the model of the fixed-bed ion-exchange system operated in the downflow mode. The results of the experiment agreed with the theoretical calculation based on the model. That gives the base of more research.

关 键 词：氯化钾 氯化铵 离子交换 分离 

分 类 号：TQ028.3[化学工程]