| 低分压CO2在有机胺水溶液中的溶解度 |
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| 引用本文： | 焦真,骆培成,吴有庭,张明杰,张志炳. 低分压CO2在有机胺水溶液中的溶解度[J]. 化学工程, 2006, 34(9): 43-46 |
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| 作者姓名： | 焦真 骆培成 吴有庭 张明杰 张志炳 |
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| 作者单位： | 南京大学,化工系,江苏,南京,210093;清华大学,化工系,北京,100084 |
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| 摘 要： | 建立了一套用于测定低分压CO2在有机胺水溶液中溶解度的实验装置。在298、308 K下分别测定了低分压CO2在较低浓度的乙醇胺(MEA)、二乙醇胺(DEA)水溶液中的溶解度。结果表明,在较低的溶解度下,CO2在有机胺水溶液中的平衡分压接近于0;当溶解度增大到一定程度后,平衡分压随其增加而急剧增大,同时,温度的升高和有机胺浓度的增大均能增大CO2的平衡分压。通过实验数据拟合得到的理论模型参数与实验值符合较好。
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| 关 键 词： | 二氧化碳 乙醇胺 二乙醇胺 溶解度 气液相平衡 低分压 |
| 文章编号： | 1005-9954（2006）09-0043-04 |
CO2 solubility in aqueous monoethanolamine and aqueous diethanolamine solutions at low CO2 partial pressure |
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| JIAO Zhen,LUO Pei-cheng,WU You-ting,ZHANG Ming-jie,ZHANG Zhi-bing. CO2 solubility in aqueous monoethanolamine and aqueous diethanolamine solutions at low CO2 partial pressure[J]. Chemical Engineering, 2006, 34(9): 43-46 |
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| Authors: | JIAO Zhen LUO Pei-cheng WU You-ting ZHANG Ming-jie ZHANG Zhi-bing |
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| Affiliation: | 1. Department of Chemical Engineering, Nanjing University, Nanjing 210093, Jiangsu Province, China; 2. Department of Chemical Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | An experimental apparatus was set up to measure the solubility of lean CO_2 in aqueous solutions of monoethanolamine(MEA) and diethanolamine(DEA) at 298 K and 308 K,respectively.The experiment shows that the CO_2 equilibrium partial pressure tends to be zero at low CO_2 solubility and increases sharply after the CO_2 solubility exceeds a critical point.The temperature and the alkanolamine′s concentration were also the important factors that influence the CO_2 partial pressure.The reaction equilibrium constants were obtained.The solubility of CO_2 calculated using Park′s model is in good agreement with the experimental data. |
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| Keywords: | CO_2 monoethanolamine diethanolamine solubility gas-liquid equilibrium low partial pressure |
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