文献类型：期刊文献

中文题名：基于沸石ZSM-5的CH_4/N_2/CO_2二元体系吸附平衡

英文题名：Binary adsorption equilibrium of CH_4, N_2 and CO_2 on zeolite ZSM-5

作者：沈文龙[1];李嘉旭[1];杨颖[1];李平[1];于建国[1]

机构：[1]华东理工大学化学工程联合国家重点实验室,上海200237

年份：2014

卷号：65

期号：9

起止页码：3490

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;EI(收录号：20143900075575);Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：国家国际科技合作项目(S2015GR1004)

语种：中文

中文关键词：沸石ZSM-5;气体竞争吸附;二氧化碳吸附;甲烷吸附;理想吸附溶液理论模型

外文关键词：zeolite ZSM-5; competitive adsorption; carbon dioxide adsorption; methane adsorption; ideal adsorbed solution theory

摘要：采用Rubotherm磁悬浮天平测量cn4、N2和C02在沸石ZSM-5上的单组分吸附平衡等温线，温度273～353K，压力0~500kPa。采用Sips模型、Toth模型和MSL模型对单组分吸附平衡实验数据进行拟合，拟合结果良好，非线性回归得到相应的模型参数。测量双组分C02/N2、C02／CH4和OH4N2在沸石ZSM-5上的竞争吸附平衡等温线，实验温度为293K，实验压力为0~500kPa。采用基于Sips模型的理想吸附溶液理论和双组分MSL模型预测双组分气体在沸石ZSM．5上的竞争吸附平衡等温线，并与实验结果进行比较，预测结果良好。比较CO2／N2 C02／CH4以及CH4／N2体系在沸石ZSM．5上的竞争吸附选择性系数，探究沸石ZSM-5吸附分离烟道气（CO2／N2体系）、垃圾填埋气（C02／CH4体系）或煤层气（CH4／N2体系）的可行性，为将来进行工艺设计提供基础数据。
Adsorption equilibrium isotherms of CH4, N2 and CO2 on zeolite ZSM-5 were measured by Rubotherm magnetic suspension balance in the pressure range of 0-500 kPa and the temperature range of 273-353 K. Sips model, Toth model and MSL model were used to fit the experimental data with acceptable accuracy, and the model parameters were obtained by the non-linear regression method. Binary adsorption isotherms of CO2/N2, CO2/CH4 and CHn/N2 were measured by the magnetic suspension balance with different compositions in the pressure range of 0-500 kPa at 293 K. The Sips model-based ideal adsorbed solution theory and two-component MSL model were used to simulate the competitive adsorption equilibrium isotherms of CO2/N2, CO2/CH4 and CH4/N2. Furthermore, the selectivity of CO2/N2, CO2/CH4 and CH4/N2 gas mixtures were calculated, and the feasibility of adsorption separation, using zeolite ZSM-5 as adsorbent to separate CO2 from flue gases （CO2/N2）, CH4 from landfill gases （CO2/CH4） and coal mine gases （CH4/N2） was evaluated.