Kinetic and Thermodynamic Study of CdCl2 Volatilizing in Air Atmosphere

摘要：

Med at the characteristic of MSWI fly ash in China that high content of chlorine,the volatilization of cadmium chloride (CdCl2)was studied.Firstly the volatilization under air atmosphere of cadmium chloride(CdCl2)was modeled employing Gibbs free energy criterion,Subsequently,the heating rate,that influenced the volatilization of CdCl2 was characterized on basis of experimental observations derived by means of a high temperature TG-DTA system.With the results of the thermodynamic analysis this paper also worked out kinetic models of the volatilization of CdCl2 The results show that： between the temperature bound(300-1200K),the volatilization process of CdCl2 mainly is the phase change of CdCl2, crystal,it also creates zinc oxide(CdO)indistinctively;the volatilization curves shift with increasing heating rate towards higher temperatures,and the volatilization ratio and temperature eigenvalue increase on certain degree;a1/2-order kinetic model can describe the volatilization reaction accurately.

关键词： CdCl2 volatilization thermodynamics phase change kinetic model

作者: LI Rundong LI Yanlong WANG Lei TIAN Xuehui KE Xin LIU Yaoxin

作者单位: Institute of Clean Energy and Environmental Engineering and Liaoning Key Laboratory of Clean Energy,Shenyang Institute of Aeronautical Engineering,Shenyang,110136,Liaoning,China

会议类型: 国际会议

会议名称: The 2nd International Conference on Asian-European Environmental Technology and Knowledge Transfer(第二届亚欧环境技术及知识转化国际研讨会)

会议地点: 合肥

会议语种:英文

页码: 392-396

在线出版日期: 2008-06-05（万方平台首次上网日期，不代表论文的发表时间）