Kinetic and thermodynamic study of CdCl2 volatilizing in air atmosphere

Rundong Li, Yanlong Li, Lei Wang, Xuehui Tian, Xin Ke, Yaoxin Liu

科研成果: 书/报告/会议事项章节会议稿件同行评审

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 (CdCl 2) 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; a 1/2-order kinetic model can describe the volatilization reaction accurately.

源语言英语
主期刊名Proceedings of the 2nd International Conference on Asian-European Environmental Technology and Knowledge Transfer
392-396
页数5
出版状态已出版 - 2008
已对外发布
活动2nd International Conference on Asian-European Environmental Technology and Knowledge Transfer - Hefei, 中国
期限: 5 6月 20086 6月 2008

出版系列

姓名Proceedings of the 2nd International Conference on Asian-European Environmental Technology and Knowledge Transfer

会议

会议2nd International Conference on Asian-European Environmental Technology and Knowledge Transfer
国家/地区中国
Hefei
时期5/06/086/06/08

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