| CO2/CH4/N2在沸石13X-APG上的吸附平衡 |
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| 引用本文： | 孔祥明,杨颖,沈文龙,李平,于建国. CO2/CH4/N2在沸石13X-APG上的吸附平衡[J]. 化工学报, 2013, 64(6): 2117-2124. DOI: 10.3969/j.issn.0438-1157.2013.06.030 |
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| 作者姓名： | 孔祥明 杨颖 沈文龙 李平 于建国 |
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| 作者单位： | 华东理工大学化学工程联合国家重点实验室,上海200237 |
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| 摘 要： | 采用磁悬浮热天平测量了CO2、CH4与N2在沸石13X-APG上的吸附等温线,温度为293、303、333和363 K,压力为0～500 kPa。对吸附平衡实验数据采用multi-site Langmuir模型和Sips模型进行拟合,均得到良好的拟合效果,非线性回归得到吸附热等模型参数,可为变压吸附工艺过程的开发提供基础热力学数据。将沸石13X-APG吸附分离性能与文献中报道的吸附材料(如沸石分子筛、活性炭、金属有机骨架材料和介孔硅分子筛)性能相比较。通过比较CO2、CH4与N2吸附容量以及相对分离系数,探讨CO2/CH4(垃圾填埋气或者CO2强化煤层甲烷回收气)体系、CO2/N2(燃煤电厂、水泥厂以及焦炭厂烟道气)体系以及CH4/N2(煤层气)体系吸附分离的高效材料,为未来二氧化碳吸附捕集和甲烷吸附回收提供基础数据。
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| 关 键 词： | 吸附等温线 沸石13X-APG 二氧化碳 甲烷 |
| 收稿时间： | 2012-10-18 |
| 修稿时间： | 2012-12-13 |
Adsorption equilibrium of CO2, CH4 and N2 on zeolite 13X-APG |
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| KONG Xiangming , YANG Ying , SHEN Weniong , LI Ping , YU Jianguo. Adsorption equilibrium of CO2, CH4 and N2 on zeolite 13X-APG[J]. Journal of Chemical Industry and Engineering(China), 2013, 64(6): 2117-2124. DOI: 10.3969/j.issn.0438-1157.2013.06.030 |
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| Authors: | KONG Xiangming YANG Ying SHEN Weniong LI Ping YU Jianguo |
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| Affiliation: | State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | Adsorption equilibrium isotherms of CO2,CH4 and N2 on zeolite 13X-APG were measured by Rubotherm magnetic suspension balance in the pressure range of 0—500 kPa at temperatures of 293,303,333 and 363 K.The multi-site Langmuir model and Sips model were used to fit the experimental data,and the model parameters were obtained by the non-linear regression.Furthermore,the adsorption capacities of CO2,CH4 and N2,as well as the separation factors of CO2/CH4,CO2/N2 and CH4/N2 gas mixtures on zeolite 13X-APG were compared with those on other materials reported in literature,including zeolites,activated carbon,mesoporous silica and metal-organic frameworks.The evaluation is given on the feasibility and efficiency of adsorption using 13X-APG as adsorbent to capture CH4 from both landfill gases and CO2 enhanced coal bed gases (CO2/CH4),to capture CO2 from flue gases of coal-fired power plants,cement plants and coking plants (CO2/N2),and to concentrate CH4 from coal mine gases (CH4/N2). |
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| Keywords: | adsorption isotherms zeolite 13X-APG carbon dioxide methane |
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