| T302锌锰系脱硫剂脱除H_2S在的宏观动力学 |
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| 引用本文： | 李彦旭,张栓兵.T302锌锰系脱硫剂脱除H_2S在的宏观动力学[J].化工学报,1995,46(6):725-733. |
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| 作者姓名： | 李彦旭 张栓兵 |
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| 作者单位： | 太原工业大学煤化工研究所!太原030024,太原工业大学煤化工研究所!太原030024,太原工业大学煤化工研究所!太原030024 |
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| 摘 要： | 用热重法研究了T302锌锰系脱硫剂脱除H_2S的宏观动力学行为.实验表明,该过程对H_2S为一级反应.在200～400℃的温度范围,反应初期为表面反应控制,中后期转移为颗粒扩散控制.宏观动力学行为可用等效粒子模型来描述.表面反应及固体扩散活化能分别为11.842、20.865kJ/mol.对反应存在最佳温度及固体扩散活化能大于表面反应活化能进行了讨论.
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| 关 键 词： | 硫化氢 宏观动力学 脱硫剂 锌锰脱硫剂 |
APPARENT KINETICS OF H_2S REMOVAL BY T302 (Zn,Mn) DESULFURIZER |
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| Li Yanxu,Zhang Shuanbing and Guo Hanxian.APPARENT KINETICS OF H_2S REMOVAL BY T302 (Zn,Mn) DESULFURIZER[J].Journal of Chemical Industry and Engineering(China),1995,46(6):725-733. |
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| Authors: | Li Yanxu Zhang Shuanbing and Guo Hanxian |
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| Affiliation: | Li Yanxu,Zhang Shuanbing and Guo Hanxian(Research Institute for Chemical Engineering of Coal,Taiyuan University of Technology,Taiyuan ) |
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| Abstract: | The apparent kinetics of H2S removal by T302 desulfurizer was studied by using thermo gravimetric method. Experiments showed that the reaction is of first order with respect to H2S concentration. In a temperature range of 200-400℃, the overall process was controlled by the surface reaction in the grain and came to the intrapellet diffusion controlled regime at the middle and last stage. The apparent kinetic behavior could be described by the equivalent grain model. The activation energies of surface reaction and solid diffusion were determined as 11. 842 and 20. 865kJ/mol, respectively. The reasons that there existed an optimum temperature and the activation energies of solid diffusion exceeded that of the chemical reaction were discussed. |
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