| 基于平衡效应的多种吸附剂对CH4/N2分离性能研究 |
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| 引用本文： | 陈高飞,汪亚燕,张东辉,鲁博.基于平衡效应的多种吸附剂对CH4/N2分离性能研究[J].天然气化工,2020(2):17-23,37. |
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| 作者姓名： | 陈高飞 汪亚燕 张东辉 鲁博 |
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| 作者单位： | ;1.中国科学院理化技术研究所低温重点实验室;2.天津大学化工学院;3.山西晋城无烟煤矿业集团有限责任公司煤与煤层气共采国家重点实验室 |
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| 基金项目： | 山西煤层气联合研究基金(No.2015012004)。 |
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| 摘 要： | 采用静态容积法研究了CH4/N2在活性炭、5A、13X、LiX、硅沸石、硅胶、ZSM-5等7种基于平衡效应分离的吸附剂上的吸附性能。测定了CH4/N2在这7种吸附剂上的吸附量并用Langmuir方程进行拟合,计算出了CH4/N2的吸附选择性与吸附热。结果表明:Langmuir模型可以准确地描述CH4和N2在各个吸附剂上的吸附行为,且活性炭对CH4的吸附量较大而对N2的吸附量较小;活性炭、硅沸石、ZSM-5等吸附剂上CH4对N2的选择性均大于3.5。此外,分析比较了CH4和N2在各个吸附剂上的吸附热,为变压吸附分离CH4/N2提供指导。
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| 关 键 词： | 平衡效应分离 甲烷 氮气 吸附量 选择性 吸附热 |
Separation performance of CH_4/N_2 on various adsorbents based on equilibrium effect |
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| CHEN Gao-fei,WANG Ya-yan,ZHANG Dong-hui,LU Bo.Separation performance of CH_4/N_2 on various adsorbents based on equilibrium effect[J].Natural Gas Chemical Industry,2020(2):17-23,37. |
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| Authors: | CHEN Gao-fei WANG Ya-yan ZHANG Dong-hui LU Bo |
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| Affiliation: | (Key Laboratory of Cryogenics,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Bejjing 100190,China;The Research Center of Chemical Enginering,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China;State Key Laboratory of Coal and CBM Co-mining,Shanxi Jincheng Anthracite Mining Group Co.,Ltd.,Jincheng 048000,China) |
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| Abstract: | The adsorption properties of CH4/N2 on seven equilibrium based?adsorbents(activated carbon,5A,13X,LiX and silicalite zeolits,silica gel and ZSM-5)were studied by static volume method.The adsorption capacities of CH4/N2 on the seven adsorbents were measured and fitted by Langmuir equation.The corresponding Langmuir equation fitting parameters and adsorption isotherms were obtained.The results show that Langmuir model can accurately describe the adsorption behavior of CH4 and N2 on each adsorbent;the adsorption capacity of CH4 on activated carbon is larger than that of N2;and the adsorption?selectivities between CH4 and N2 on activated carbon,silicalite and ZSM-5 are greater than 3.5.The adsorption heat of CH4 and N2 on each adsorbent is analyzed to provide guidance for separation of CH4/N2 by PSA. |
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| Keywords: | equilibrium effect separation methane nitrogen adsorption capacity selectivity sdsorption heat |
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