李泽全,但林阳,李雪敏,刘楠,白晨光,扈玫珑.熔盐电解法的气体研究及其对电解的影响[J].稀有金属材料与工程,2017,46(12):3767~3772.[Li zequan,Dan linyang,Li xuemin,Liu nan,Bai chenguang,Hu meilong.Research on the gas of molten salt electrolysis and its impact in electrodeoxidation[J].Rare Metal Materials and Engineering,2017,46(12):3767~3772.]
熔盐电解法的气体研究及其对电解的影响
投稿时间:2016-10-25  修订日期:2017-01-18
中文关键词:  熔盐电解法  气体组分  氩气流动
基金项目:中央高校基本科研项目(项目号CDJXS11221172),重庆大学大型仪器设备开放基金(基金号201606150027)
中文摘要:
      采用离子色谱、火焰吸收等方法分析反应器中的残渣和尾气凝液,结果表明:残渣的主要成分为FeCl2/FeCl3、NiCl2、CrCl2/CrCl3和CaCl2,其中以铁的氯化物含量最高;凝液主要由HCl、HClO、H2O以及金属氯化物所组成。分析认为反应器内的气体包括:Cl2、HCl、HClO、H2O、金属氯化物蒸气和通入的氩气等。模拟计算表明,在常用的1.0 L/min的氩气流量下,难以将反应器内的HCl、HClO等腐蚀性气体及时排出反应器,它们与反应器内壁发生反应形成金属氯化物,对设备造成严重腐蚀,并且会对电解过程产生一定的影响。通过模拟计算不同流量的氩气在反应器内的流动状况,并结合尾气吸收实验,确定在2 h的预电解期,氩气通入量宜改为5.0 L/min。在不同的氩气通入方案下电解TiO2发现,改进后的氩气通入方案有利于电解速度的提高,且设备的腐蚀情况有所缓解。
Research on the gas of molten salt electrolysis and its impact in electrodeoxidation
英文关键词:molten salt electrolysis method  gas component  argon flow
英文摘要:
      Ion chromatography and flame atomic absorption were used to analysis condensates collected in various temperature and slag. The results show that the main components of slag were FeCl2/FeCl3、NiCl2、CrCl2/CrCl3; the condensates were made up of CaCl2、HCl、HClO、H2O and metal chlorides. So the gas in reactor included Cl2、HCl、HClO、H2O、Ar and metal chlorides. The 1.0 L/min argon flow in reactor at 850 °C was simlated to find that it was very difficult to vent the HCl、HClO, et al., so these gases were reacted with reactor wall to produced metal chlorides, which led to seriously corroded, at the same time, HCl、HClO could impact in electrodeoxidation. Based on simlation and tail gas absorption experiment, argon flow increased to 5.0 L/min in 2 h of pre-electrolysis could effectively vent the HCl、HClO, et al. This improvement could enhance the electrolysis velocity and resolve the corrosion problem.
作者单位E-mail
李泽全 重庆大学化学化工学院 lzq0313@sina.com 
但林阳 重庆大学化学化工学院 20141802063@cqu.edu.cn 
李雪敏 重庆大学化学化工学院  
刘楠 重庆大学化学化工学院  
白晨光 重庆大学材料学院  
扈玫珑 重庆大学材料学院  
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