静态离子交换法制备氢碘酸的研究  

PREPARATION OF HYDROIODIC ACID WITH STATIC ION EXCHANGE METHOD

作　　者：门晓刚[1,2] 祝博[1] 林倩 刘飞[1,3] 曹建新[1,2] 

机构地区：[1]贵州大学化学与化工学院,贵阳550025 [2]贵州省绿色化工与清洁能源技术重点实验室,贵阳5500253 [3]贵州省矿产资源高效利用与绿色化工技术特色重点实验室,贵阳550025

出　　处：《离子交换与吸附》2014年第4期359-367,共9页Ion Exchange and Adsorption

基　　金：贵州省科技厅重大专项(No.20116023);瓮福集团产学研合作项目;贵州大学研究生创新基金(No.2013011)

摘　　要：以磷酸生产过程中回收的粗碘为原料,采用静态离子交换法制备氢碘酸。通过He准数法和中断接触法相结合判断离子交换过程的控制机理,考察了树脂用量、交换时间、搅拌速度、交换温度等因素对氢离子浓度和铵交换率的影响。结果表明,离子交换过程为颗粒扩散控制;在树脂与粗碘质量比5:1、搅拌速度600r/min、交换时间20min、交换温度40℃条件下,氢离子浓度达到1.86mol/L,铵交换率达到92%。在真空度0.07MPa,蒸发温度80℃的条件下,减压蒸馏制备出浓度为47%的氢碘酸,产品各项指标均符合行业标准HG 3-952-76的要求。Hydroiodic acid was prepared by static ion exchange method with the crude iodinerecycled in the process of phosphoric acid production as raw materials. Based on the ionexchange mechanism judged by Helfferich dimensionless number and broken phase contactmethod, effects of resin amount, exchange time, stirring rate, exchange temperature and otherfactors on concentration of hydrogen ion and exchange efficiency of ammonium wereinvestigated. The results showed that the ion exchange process was particle diffusion control.Concentration of hydrogen ion was 1.86mol/L and exchange efficiency of ammonium was 92%,when mass ratio of resins to crude iodine was 5 ： 1, stirring rate was 600r/min, exchange timewas 20min and exchange temperature was 40℃. With vacuum distillation at 80℃ under0.07MPa, 47% of hydroiodic acid was successfully obtained. All indexes of the hydroiodic acidmet the requirements of industry standard of HG 3-952-76.

关 键 词：粗碘 静态 离子交换 控制机理 氢碘酸 

分 类 号：TQ425.9[化学工程]