化工学报Issue(9)：3490-3498,9.DOI:10.3969/j.issn.0438-1157.2014.09.025
基于沸石ZSM-5的CH4/N2/CO2二元体系吸附平衡
Binary adsorption equilibrium of CH4, N2 and CO2 on zeolite ZSM-5
摘要
Abstract
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 CH4/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.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Key words
zeolite ZSM-5/competitive adsorption/carbon dioxide adsorption/methane adsorption/ideal adsorbed solution theory分类
化学化工引用本文复制引用
沈文龙,李嘉旭,杨颖,李平,于建国..基于沸石ZSM-5的CH4/N2/CO2二元体系吸附平衡[J].化工学报,2014,(9):3490-3498,9.基金项目
国家国际科技合作项目（S2015GR1004）。 （）
