Novel non-aqueous MEA solutions for CO2 capture
Novel non-aqueous MEA solutions for CO2 capture
复制标题
DOI：
10.1016/j.ijggc.2019.04.013
复制
发表时间：
2019-07-01
影响因子：
3.9
通讯作者：
Fan, Xianfeng
中科院分区：
文献类型：
--
作者：
Bougie, Francis;Pokras, Daniel;Fan, Xianfeng
目前二氧化碳捕获的障碍包括减少资本和能源成本。本研究描述了在有机溶剂中用单乙醇胺（MEA）捕获二氧化碳作为一种降低解吸过程中能耗的方法。本研究中使用的溶剂是乙二醇和1-丙醇（EG/PrOH）、二甘醇单乙醚（DEGETHYL）和N-甲基甲酰胺（NMF）的混合物。采用微波再生技术对胺溶液进行了简单快速的性能筛选，并设计实验考察了溶剂对MEA捕集CO2的影响。在全球范围内，DEGMEE解决方案具有最低的能耗和良好的二氧化碳循环能力;与传统的30wt% MEA水溶液相比，最佳解决方案可将能耗降低78%。这些发现表明有机溶剂在改进CO2捕集技术方面具有很大的前景。还发现，使用NMF大大增强了CO2吸收动力学，但在解吸步骤中是有害的。
Present obstacles for CO2 capture involve reducing capital and energy costs. This study describes carbon dioxide capture with monoethanolamine (MEA) in organic solvents as a way to reduce the energy consumption during desorption. The solvents used in this study are a mixture of ethylene glycol and 1-propanol (EG/PrOH), diethylene glycol monoethyl ether (DEGMEE), and N-methylformamide (NMF). A microwave regeneration technique was used to easily and quickly screen the performances of the amine solutions and experiments were designed to investigate the solvent effects on CO2 capture by MEA. Globally, DEGMEE solutions resulted in the lowest energy consumptions and good CO2 cyclic capacities; the best solutions reducing the energy consumption by 78% in comparison to the traditional 30 wt% MEA aqueous solution. These findings show that organic solvents have much promise in improving CO2 capture technology. It was also found that using NMF greatly enhanced the CO2 absorption kinetics but was detrimental during the desorption step.