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[1]季家友,张贺贺,马 航,等.湿法磷酸深度净化工艺的研究[J].武汉工程大学学报,2022,44(05):504-508.[doi:10.19843/j.cnki.CN42-1779/TQ.202205025]
 JI Jiayou,ZHANG Hehe,MA Hang,et al.Advanced Purification Process of Wet-Process Phosphoric Acid[J].Journal of Wuhan Institute of Technology,2022,44(05):504-508.[doi:10.19843/j.cnki.CN42-1779/TQ.202205025]
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湿法磷酸深度净化工艺的研究

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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
44
期数:
2022年05期
页码:
504-508
栏目:
50周年校庆特刊
出版日期:
2022-10-31

文章信息/Info

Title:
Advanced Purification Process of Wet-Process Phosphoric Acid

文章编号:
1674 - 2869(2022)05 - 0504 - 05
作者:
季家友1张贺贺1马 航2刘文彪2王奋钰1李少平3
1. 武汉工程大学材料科学与工程学院,湖北 武汉 430205;
2. 云南云天化股份有限公司研发中心,云南 昆明 650228;
3. 湖北三峡实验室,湖北 宜昌 443007
Author(s):
JI Jiayou1ZHANG Hehe1MA Hang2LIU Wenbiao2WANG Fenyu1LI Shaoping3

1. School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205,China;
2. Research and Development Center of Yunnan Yuntianhua Co., Ltd, Kunming 650228,China;
3. Hubei Three Gorges Laboratory, Yichang 443007,China

关键词:
湿法磷酸预处理工艺两级膜过滤食品级磷酸
Keywords:
wet-process phosphoric acid pretreatment process two-stage membrane filtration food-grade phosphoric acid
分类号:
TQ126.3
DOI:
10.19843/j.cnki.CN42-1779/TQ.202205025
文献标志码:
A
摘要:
针对湿法磷酸原料杂质多、产品附加值不高的问题,研究以湿法磷酸为原料,采用预处理工艺结合二级膜过滤的集成深度净化工艺,成功制得了食品级磷酸。结果表明:预处理工艺中,脱砷率可达89.7%,脱硫率可达98%,脱氟率可达95.2%;二次脱砷工艺中,脱砷率可达93.3%;两级膜工艺中,碳化硅超滤膜平均通量达595 L/(h·m2);一次纳滤平均通量为6.4 L/(h·m2);二次纳滤平均通量为12.9 L/(h·m2);二次纳滤后的湿法磷酸中w(Fe)=2.26 mg/kg、w(Pb)=0.29 mg/kg、w(Cd)=0.15 mg/kg;经浓缩处理后达到食品级磷酸标准。
Abstract:
The raw materials of wet-process phosphoric acid contain many impurities with little added value. The food-grade phosphoric acid was successfully prepared from wet-process phosphoric acid by the integrated advanced purification process of pretreatment and secondary membrane filtration. The results show that the arsenic removal rate is 89.7%,the desulfurization rate is 98%, and the defluorination rate is 95.2%,while the arsenic removal rate can reach 93.3% in the secondary arsenic removal process. In the process of secondary membrane filtration, the average flux of silicon carbide ultrafiltration membrane is 595 L/(h·m2);the average fluxes of primary and secondary nanofiltration are 6.4 L/(h·m2) and 12.9 L/(h·m2), respectively. The ions content of iron, lead and cadmium in wet process phosphoric acid after secondary nanofiltration is reduced to 2.26 mg/kg, 0.29 mg/kg and 0.15 mg/kg, respectively. After concentration treatment, the phosphoric acid reaches the standard of food-grade.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2022-05-26
基金项目:湖北三峡实验室开放基金(SK212002);湖北省重点研发项目(2020BCA075)
作者简介:季家友,博士,教授。E-mail: [email protected]
引文格式:季家友,张贺贺,马航,等.湿法磷酸深度净化工艺的研究[J]. 武汉工程大学学报,2022,44(5):504-508.

更新日期/Last Update: 2022-11-01