| 气固反应的终止判断与酸性气体干式净化能限分析 |
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| 引用本文： | 陈德珍,张鹤声. 气固反应的终止判断与酸性气体干式净化能限分析[J]. 工程热物理学报, 1998, 0(6) |
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| 作者姓名： | 陈德珍 张鹤声 |
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| 作者单位： | 同济大学热能工程系!上海，200092，同济大学热能工程系!上海，200092 |
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| 摘 要： | 借助成核—晶体生长模型，对气固反应过程中固体产物层的形成进行能耗分析，提出最小稳定晶核尺寸与成长后的晶粒相等的终止判据，与原来普遍使用的阅值孔隙率终止判据相补充，全面考虑气固反应的终止原因．在数值模拟中利用这些终止判据，预测垃圾焚烧炉排烟中HCI气体与钙吸收剂之间的干式反应程度，分析烟气干式净化的使用条件．
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| 关 键 词： | 干式净化 终止判据 成核—晶体生长 |
A NEW TERMINATION CRITERION FOR GAS-SOLID REACTIONS AND ITS APPLICATION TO ACIDIC GASES DRY REMOVAL CAMCITY AND UTILIZATION ANALYSIS |
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| CHEN Dezhen, ZHANG Hesheng. A NEW TERMINATION CRITERION FOR GAS-SOLID REACTIONS AND ITS APPLICATION TO ACIDIC GASES DRY REMOVAL CAMCITY AND UTILIZATION ANALYSIS[J]. Journal of Engineering Thermophysics, 1998, 0(6) |
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| Authors: | CHEN Dezhen ZHANG Hesheng |
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| Affiliation: | Tongji vniversity snanghai 200092 |
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| Abstract: | With the help of nucleation and crystallization model and energy analysis, a new ter-mination criterion was proposed for gas-solid reactions with solid product formation. Whenthe size of minimum stable nucleus in the reaction process reaches that of the developedcrystal, the reactions cease. This new termination criterion and the generally used perco-lation threshold porosity criterion replenish each other under differellt conditions, and theformer is suitable for acidic gases dry absorption capacity prediction in practice. By numeri-cal predictions using these criteria conditions under which dry removal can be applied to areanalyzed. |
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| Keywords: | dry removal of acidic gases termination criterion nucleation and crystallization |
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