硼同位素分离过程络合剂脱水模拟  

Simulative investigation of dehydration of complexing agent in boron isotope separation

作　　者：徐志彬[1] 赵振纲[1] 刑涛[1] 李颖娜[2] 

机构地区：[1]河北出入境检验检疫局京唐港办事处,河北唐山063000 [2]唐山学院环境与化学工程系,河北唐山063000

出　　处：《兰州理工大学学报》2009年第1期67-70,共4页Journal of Lanzhou University of Technology

摘　　要：针对在硼同位素的分离过程中,由于三氟化硼的特殊性质,必须对整个系统的水质量浓度进行控制,而系统中的微量水主要由络合剂引入的问题,根据汽提原理,对络合剂中的微量水份脱除建立数学模型,并利用Matlab软件对此模型进行求解.考察温度、汽提量、操作压力及理论板数对脱水效果的影响.结果表明:温度较低时,温度的增加对脱水效果影响明显,当温度增加到一定程度后,脱水效果变化不大;随着汽提量和塔板数的增加,塔底苯甲醚中水的质量浓度减小;而随着压力的降低,塔底苯甲醚中水的质量浓度减小.确定苯甲醚脱水的最佳工作条件:常温、常压或者减压,氮气和苯甲醚的物质的量比为6∶1,至少15块理论板.In boron isotope separation process, the mass-concentration of water in whole system must be controlled because of the special nature of BF3. The tiny amount of water was mainly introduced by the complexing agent. On the basis of stripping principle, the mathematical model of removal of tiny moisture in the complexing agent was established, and the solution of this model was carried on by using the software of Matlab. The influence of temperature, stripping volume, operational pressure and theoretical number of plates on the dehydration effect was investigated. The result showed that, when the temperature was lower, the influence of its increasing on the dehydration was obvious. When the temperature reached to some extent, the effect of dehydration remained almost unchanged. With the increasing of stripping volume and theoretical number of plates, the mass-concentration of water in methyl-phenoxide at tower bottom was decreased. With the decreasing of operational pressure, it was also decreased. The optimized conditions for dehydration of the methyl-phenoxide were as follows： normal temperature, normal pressure or decompression, the amount of substance ratio of nitrogen to methy-lphenate being 6：1, and 15 plates of their theoretical number.

关 键 词：硼同位素 脱水 汽提 

分 类 号：TQ128[化学工程—无机化工]