A continuous and high-efficiency process to separate coal bed methane with porous ZIF-8 slurry:Experimental study and mathematical modelling

作     者：Wan Chen Xiaonan Guo Enbao Zou Mengling Luo Mengzijing Chen Mingke Yang Hai Li Chongzhi Jia Chun Deng Changyu Sun Bei Liu Lanying Yang Guangjin Chen Wan Chen;Xiaonan Guo;Enbao Zou;Mengling Luo;Mengzijing Chen;Mingke Yang;Hai Li;Chongzhi Jia;Chun Deng;Changyu Sun;Bei Liu;Lanying Yang;Guangjin Chen

作者机构：State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumBeijing102249China 

出 版 物：《Green Energy & Environment》 (绿色能源与环境（英文版）)

年 卷 期：2020年第5卷第3期

页      面：347-363页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 082002[工学-油气田开发工程] 

基　　金：The financial supports received from the National Natural Science Foundation of China(21522609,21636009 and 21878328) the National Key Research and Development Program of China(Nos.2017YFC0307302,2016YFC0304003) the Science Foundation of China University of Petroleum,Beijing(No.2462018BJC004) Beijing Science and Technology Program,China(No.Z181100005118010) 

主　　题：Coal bed methane Gas separation Phase equilibrium experiment Mathematical model Process simulation 

摘      要：Coal bed methane has been considered as an important energy *** major difficulty of purifying coal bed methane comes from the similar physical properties of CH_4 and N_*** ZIF-8/water-glycol slurry was used as a medium to separate coal bed methane by fluidifying the solid adsorbent *** sorption equilibrium experiment of binary mixture(CH_4/N_2)and slurry was *** selectivity of CH_4 to N_2 is within the range of 2-6,which proved the feasibility of the slurry separation *** modified Langmuir equation was used to describe the gas-slurry phase equilibrium behavior,and the calculated results were in good agreement with the experimental data.A continuous absorption-adsorption and desorption process on the separation of CH_4/N_2 in slurry is proposed and its mathematical model is also *** analysis is conducted to determine the operation conditions and the energy performance of the proposed process was also *** gas contains 30 mol%of methane and the methane concentration in product gas is 95.46 mol%with the methane recovery ratio of 90.74%.The total energy consumption for per unit volume of product gas is determined as 1.846 kWh Nm^(-3).Experimental results and process simulation provide basic data for the design and operation of pilot and industrial plant.