| 单颗粒催化剂上非理想体系的反应-扩散模型(Ⅰ)——非理想体系反应-扩散模型的建立 |
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| 引用本文： | 李建伟,赖海明.单颗粒催化剂上非理想体系的反应-扩散模型(Ⅰ)——非理想体系反应-扩散模型的建立[J].化工学报,1999,50(1):8-14. |
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| 作者姓名： | 李建伟 赖海明 |
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| 作者单位： | 北京化工大学化学工程学院!北京100029,北京化工大学化学工程学院!北京100029,北京化工大学化学工程学院!北京100029,北京化工大学化学工程学院!北京100029 |
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| 基金项目： | 中国科学院资助项目，教育部科学技术研究项目，29776003，[1995]121，， |
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| 摘 要： | 基于力平衡和通量的观点,建立了多孔催化剂上非理想体系的反应-扩散模型.该模型综合考虑了非理想气体反应体系的热力学特性和各组分通量之间的相互耦合作用;此外,该模型可根据实际情况依次简化为常规意义上的尘气模型、广义Stefan-Maxwell模型和费克扩散模型.作为单颗粒催化剂上反应-扩散过程通用模拟软件开发的基础,该模型明显优于其他常规模型.
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| 关 键 词： | 催化剂 颗粒 反应 扩散模型 非理想 传质 传热 |
A MODEL OF DIFFUSION - REACTION PROCESSES OVER A CATALYST PELLET FOR NON - IDEAL REACTION SYSTEM(Ⅰ) DEVELOPMENT OF THE DIFFUSION - REACTION MODEL FOR A NON - IDEAL REACTION SYSTEM |
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| Li Jianwei,Lai Haiming,Shi Xiaoding,Li Chengyue.A MODEL OF DIFFUSION - REACTION PROCESSES OVER A CATALYST PELLET FOR NON - IDEAL REACTION SYSTEM(Ⅰ) DEVELOPMENT OF THE DIFFUSION - REACTION MODEL FOR A NON - IDEAL REACTION SYSTEM[J].Journal of Chemical Industry and Engineering(China),1999,50(1):8-14. |
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| Authors: | Li Jianwei Lai Haiming Shi Xiaoding Li Chengyue |
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| Abstract: | From the viewpoint of force balance and fluxes, a general model of diffusion - reaction processes over a catalyst pellet for a non - ideal reaction system is developed. The thermodynamic characteristics of a non - ideal gaseous mixture and the interaction among the fluxes of different species are considered in the model. In addition, this model can be simplified to the conventional Ficks Model, Extended Stefan - Maxwell Model or Dusty - Gas Model. As the foundation for developing general software simulating the diffusion - reaction processes involved over a pellet of catalyst, this model has obvious advantage over others used usually. |
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