当液一固反应为流体扩散控制时,以缩核模型为基础,得到了单颗粒消溶时粒径的变化规律,满足平方反比定律;在单颗粒消溶的基础上,建立了颗粒群消溶模型,得到了单颗粒微观反应模型和颗粒群宏观反应特征的关联关系.以不同种类的石灰石在不同温度和pH值下的消溶过程为例,对液固反应的微观-宏观关联模型进行了实验验证,实验和数学模型吻合较好.该关联模型对完善液固反应理论体系,实现宏观实验数据反推微观化学反应参数的测量技术具有重要意义.
参考文献
[1] | Shin-Min Shih;Jyh-Ping Lin;Gwo-Yuan Shiau .Dissolution rates of limestones of different sources[J].Journal of hazardous materials,2000(1/2):159-171. |
[2] | Lakatos B;Blickle T .Effect of Particle Size Distribution on Liquid-Solid Reaction Kinetics in Solutions[J].Acta Chimica Academiae Scientiarum Hungaricae,1990,127(02):395-405. |
[3] | Philip K. Gbor;Deyong Wen;Fan Meng;Fuquan Yang;James J. Sloan .Modeling of mercury emission, transport and deposition in North America[J].Atmospheric environment,2007(6):1135-1149. |
[4] | 王秋颖,魏燕丽,李婷婷,王东方,顾璠.液固DBD等离子体煤液化反应动力学分析[J].工程热物理学报,2008(05):897-899. |
[5] | Gbor PK;Jia CQ .Critical evaluation of coupling particle size distribution with the shrinking core model[J].Chemical Engineering Science,2004(10):1979-1987. |
[6] | Lakatos T B .Effect of Particle Size Distribution on Liquid-Solid Reaction Kinetics in Solutions[J].Acta Chimica Academiae Scientiarum Hungaricae,1990,127(02):395-405. |
[7] | Levenspiel O.Chemical Reaction Engineering 2001[M].New York:Department of Chemical Engineering Oregon State University |
[8] | Sakae Yagi D K .Fluidized-Solids Reactors with Continuous Solids Feed[J].Chemical Engineering Science,1961,16(08):364-371. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%