摘要
有效降低CO_(2)排量实现碳中和是当前研究热点之一。ZIF-8/乙二醇-2-甲基咪唑浆液被发现不仅能高效地捕集CO_(2),同时能利用浆液良好的流动性实现一个碳捕集-浆液流动再生-浆液再利用的连续碳捕集过程。为了有效地掌握纯CO_(2)气体在ZIF-8/乙二醇-2-甲基咪唑浆液中的溶解能力,本文首先测定了293.15K、303.15K和313.15K下CO_(2)在干ZIF-8上的吸附量和在2-甲基咪唑-乙二醇溶液中的溶解性;然后基于Langmuir方程和CO_(2)溶解机理进一步建立了相应吸附量和溶解度计算数学模型;最后综合考虑ZIF-8/乙二醇-2-甲基咪唑浆液中乙二醇和ZIF-8之间的共存特征和相互影响,建立了CO_(2)在目标浆液中溶解吸收量计算数学关联式。所得研究结果对浆液法CO_(2)技术的推广和后续流程模拟具有良好的指导作用和理论意义。
Effectively reducing CO_(2) emissions to achieve carbon neutrality is one of the current researchhotspots. Our recent research found that ZIF-8/glycol-2-methylimidazole slurry can not only capture CO_(2)from gas mixtures efficiently, but also make use of the good flow of the slurry, a continuous separationprocess of carbon capture-slurry regeneration-slurry reuse could be realized. In order to understand thesolubility of pure CO_(2) gas in ZIF-8/glycol-2-methylimidazole slurry, in this work, first, the adsorptionability of CO_(2) in the dry ZIF-8 material and the solubility of it in the 2-methylimidazole-glycol solution at293.15K, 303.15K and 313.15K and different pressures were measured. Meanwhile, based on theLangmuir equation and CO_(2) dissolution mechanism in 2-methylimidazole-glycol solution, thecorresponding CO_(2) adsorption capacity and solubility calculation mathematical models were established.Finally, considering the coexistence characteristic and mutual influence of glycol and ZIF-8 in ZIF-8/glycol-2-methylimidazole slurry, a mathematical correlation equation for calculating the sorption amount of CO_(2) in the target slurry was proposed. The obtained research results have good theoretical guidance forthe promotion of CO_(2) capture technology by using the ZIF-8 slurry and subsequent process simulation.
作者
姚德松
刘煌
陈莉
李瑞景
王舰
YAO Desong;LIU Huang;CHEN Li;LI Ruijing;WANG Jian(State Key Lab of Oil and Gas Reservoir Geology and Exploitation(Southwest Petroleum University),Chengdu 610500,Sichuan,China;Shengli Oilfield Luming Oil-Gas Exploration&Development Limited Company,Dongying 257000,Shandong,China)
出处
《化工进展》
EI
CAS
CSCD
北大核心
2021年第S02期315-321,共7页
Chemical Industry and Engineering Progress
基金
国家自然科学基金(21606184)
四川省科技计划(2021YFQ0044)。
