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磷石膏制备硫酸铵反应动力学研究
引用本文:张兴法,赵建军,陈祥迎,陈敏.磷石膏制备硫酸铵反应动力学研究[J].合肥工业大学学报(自然科学版),2002,25(3):419-422.
作者姓名:张兴法  赵建军  陈祥迎  陈敏
作者单位:合肥工业大学,化学工程学院,安徽,合肥,230009
摘    要:以磷石膏和碳酸铵为原料制备硫酸铵 ,对反应过程的动力学进行了研究。按照收缩未反应芯模型导出了化学反应控制的模型方程 ,并确定了化学反应控制步骤的实验条件。在化学反应控制条件下进行实验研究 ,结果表明反应过程符合收缩未反应芯模型。测定了反应级数和反应活化能 ,建立了反应动力学方程。

关 键 词:磷石膏  碳酸铵  硫酸铵  动力学方程
文章编号:1003-5060(2002)03-0419-04
修稿时间:2001年11月29

On the reaction kinetics in the preparation of ammonium sulphate from phosphogypsum and ammonium carbonate
ZHANG Xing-fa,ZHAO Jian-jun,CHEN Xiang-ying,CHEN Min.On the reaction kinetics in the preparation of ammonium sulphate from phosphogypsum and ammonium carbonate[J].Journal of Hefei University of Technology(Natural Science),2002,25(3):419-422.
Authors:ZHANG Xing-fa  ZHAO Jian-jun  CHEN Xiang-ying  CHEN Min
Abstract:In this paper, ammonium sulphate was prepared from phosphogypsum and ammonium carbonate, and the kinetics of the reaction process is studied. According to the shrinking core model,the model equation to be controlled by the chemical reaction is deduced and the conditions of the controlling steps of the reaction are determined. Under the controlling condition of the chemical reaction,the experiment is made and its result demonstrates that the reaction process is in accordance with the shrinking core model. The reaction order and the reaction activation energy are determined and the reaction kinetic equation is set up.
Keywords:phosphogypsum  ammonium carbonate  ammonium sulphate  kinetic equation
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