高纯六氟化钨去除氟化氢的工艺研究  

Research on Process of HF Removal from High Purity Tungsten Hexafluoride

作　　者：陈志刚 

机构地区：[1]厦门钨业股份有限公司,福建厦门361026

出　　处：《化工生产与技术》2015年第2期1-4,11,共4页Chemical Production and Technology

基　　金：国家国际科技合作专项(2010DFR50730)

摘　　要：对高纯六氟化钨制备过程中,采用综合措施抑制电解制氟时氟化氢的挥发、球状氟化钠吸收氟化氢、液氮冷冻固化氟化氢而提纯氟气、六氟化钨低温冷冻抽真空除去氟化氢等物理过程,以及利用六氯化钨与氟化氢发生反应而去除氟化氢的化学过程。结果表明,电解产生的氟气中质量分数4.5%的HF,经过多步聚去除氟化氢后,精馏产品六氟化钨达到HF的质量分数小于5×10-6的高纯要求。解决了氟化氢与六氟化钨2者难以分离的技术问题。This paper introduced the suppressing volatilization of HF during electrolysis for F2 in high purity tungsten hexafluoride preparation process by comprehensive measures, the adsorption of HF used spherical Na F, the freezing of HF used liquid nitrogen for purfying fluorine, the removal of HF by physical process such as vacuuming frozen WF6, and chemical process such as reacting WCl6 and HF. Fluorine gas produced by electrolysis containing 4.5% HF, and after a multi-step process to remove HF, the purity of WF6 meeted the quality requirements and the content of HF less than 5 ×10-6, which solving the problem of HF and WF6 difficult to separate problem.

关 键 词：六氟化钨 氟化氢 去除 提纯 

分 类 号：TQ136.13[化学工程—无机化工]