含铝离子交换树脂的再生工艺研究  

Study on the regeneration process of exchange resin containing Al^3+

作　　者：叶润州 杨林[1] 王辛龙[1] 吴赵敏 钟艳君[1] 罗涛 王烨[1,2] 李耀基 YE Runzhou;YANG Lin;WANG Xinlong;WU Zhaomin;ZHONG Yanjun;LUO Tao;WANG Ye;LI Yaoji(Ministry of Education Center for Comprehensive Utilization and Clean Processing of Phosphorus Resources,School of Chemical Engineering,Sichuan University,Chengdu 610065,China;Yuntianhua Group Co.,Ltd.,Kunming 650228,China)

机构地区：[1]四川大学化学工程学院教育部磷资源综合利用与清洁加工工程中心,四川成都610065 [2]云天化集团有限责任公司,云南昆明650228

出　　处：《磷肥与复肥》2020年第9期27-29,共3页Phosphate & Compound Fertilizer

基　　金：云天化博士后基金(209494)。

摘　　要：为探索湿法磷酸净化新技术,对新型阳离子交换树脂的再生能力进行研究,考察不同工艺条件下的再生性能与磷回收情况。结果表明,温度对脱附反应没有明显影响,最优工艺条件为温度50℃,w(H2SO4)25%,固液质量比1.0∶1.1,在该条件下,对初始w(Al)为29.05 mg/g的树脂(干基)的脱附率约为43.22%。在磷回收实验中,采用三级逆流水洗能将磷收率提高到98.12%。To explore new technology of wet-process phosphoric acid purification,the regeneration ability of the new cation exchange resin is studied.The regeneration performance and phosphorus recovery under different process conditions are investigated.The results show that the temperature has no obvious effect on the desorption.Under the optimal process conditions,which the temperature is 50℃,the sulfuric acid concentration is 25%,the mass ratio of solid-liquid is 1.0∶1.1,the desorption rate of resin with initial Al3+content of 29.05 mg/g(dry base)is 43.22%.In the phosphorus recovery experiment,the phosphorus yield is increased to 98.12%by using three-stage countercurrent water washing.

关 键 词：阳离子交换树脂 AL^3+ 再生工艺 湿法磷酸净化 

分 类 号：TQ126.35[化学工程—无机化工]