| 非平衡级模型用于SO2化学吸收过程的模拟 |
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| 引用本文： | 徐伟齐,汤志刚,周长城,陈成,郭庆丰.非平衡级模型用于SO2化学吸收过程的模拟[J].清华大学学报(自然科学版),2003,43(12):1616-1619. |
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| 作者姓名： | 徐伟齐 汤志刚 周长城 陈成 郭庆丰 |
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| 作者单位： | 清华大学,化学工程系,北京,100084 |
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| 摘 要： | 为了将磷酸钠缓冲溶液吸收SO2的工艺工业化,对该过程建立了非平衡级模型,并对模拟烟气中SO2的吸收过程进行了模拟.利用溶液电离平衡理论结合离子活度系数的修正,对磷酸钠溶液吸收模拟烟气中的SO2气液平衡进行预测,获得非平衡级模型中的界面气液平衡常数.对直径为30mm,填料高度为0.6m的吸收塔中不同条件下磷酸钠缓冲溶液吸收模拟烟气中的SO2过程进行了预测.预测结果与模拟实验结果吻合良好.该模型可以为工艺设计及操作提供参考.
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| 关 键 词： | 化工过程模拟 非平衡级模型 化学吸收 二氧化硫 |
| 文章编号： | 1000-0054(2003)12-1616-04 |
| 修稿时间： | 2003年5月23日 |
Simulation for chemical absorption of sulfur dioxide using a non-equilibrium stage model |
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| XU Weiqi,TANG Zhigang,ZHOU Changcheng,CHEN Cheng,GUO Qingfeng.Simulation for chemical absorption of sulfur dioxide using a non-equilibrium stage model[J].Journal of Tsinghua University(Science and Technology),2003,43(12):1616-1619. |
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| Authors: | XU Weiqi TANG Zhigang ZHOU Changcheng CHEN Cheng GUO Qingfeng |
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| Abstract: | A non-equilibrium stage model was used to analyze SO_2 absorption in a sodium phosphate buffer solution to predict the absorption of SO_2 from flue gas. A thermodynamic model with a modified ion activity coefficient was used to predict the gas-liquid phase equilibrium of the SO_2 absorbed by the sodium phosphate buffer solution and the phase equilibrium constant at the interface in the non-equilibrium stage model. The SO_2 absorption from the flue gas was predicted for different conditions in a laboratory tower (0.03 m in diameter and 0.6 m in packed section height). The results compare well with experimental data so the model can be used for process design and analysis. |
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| Keywords: | process modeling of chemical engineering non- equilibrium stage model chemical absorption sulfur dioxide |
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