【作者】 王心亮； 贾臻； 肖国林；

【Author】 WANG Xin-liang,JIA Zhen,XIAO Guo-lin (Wuhan 2nd Ship Design and Research Institute,Wuhan of Hubei Prov.China,430000)

【机构】 武汉第二船舶设计研究所；

【摘要】 核电厂乏燃料处理的Purex流程产生大量放射性磷酸三丁酯废液,传统的处理方式是采用热解焚烧。目前,国际上正在研究使用非热等离子体方法对其进行降解处理。在非热等离子体降解磷酸三丁酯废液的反应中,电子与水蒸气反应生成OH活性自由基的反应是降解磷酸三丁酯的关键反应。由于缺少等离子体反应动力学参数,难以进行定量分析。通过对波尔兹曼方程的分析并且考虑分子碰撞理论,建立了反应速率的求解模型,与其它研究者的试验数据对比证实了该模型的正确性。通过该模型计算得到了等离子体中OH活性自由基生成反应的反应速率系数,并拟合为标准的Arrhenius形式。更多还原

【Abstract】 There is a great deal of radioactive liquid waste involving Tributylphosphate(TBP) producing in nuclear fuel reprocessing particularly in the Purex process.Using incineration technology to deal with TBP waste is a traditional way.Now a process to degrade TBP by means of a non-thermal plasma technique is presented.The dissociation reaction caused by the collision of electrons with neutral molecules can generate active radicals which play a central role in removing TBP.And the electron reacting with vapor to generate OH radicals is the key reaction in removing TBP.For the lack of plasma reaction kinetic parameters,it is difficult to do quantitative analysis.A model is derived from the Boltzmann equation and molecule collision theory to predicate the dissociation reaction rate coefficients. Upon comparing with available literature,the model is confirmed to be acceptably accurate in general.Reaction rate coefficients of vapor dissociation in non-thermal plasma are derived according to the Arrhenius formula.更多还原