相变溶剂捕集CO_2技术的研究进展

Research progresses in CO_2 capture technology using phase change solvents

化学溶剂吸收法是目前应用最广泛的燃烧后CO_2捕集技术。介绍了化学溶剂吸收法的基本原理,综述了化学溶剂吸收法的研究现状,比较分析了几种常用CO_2吸收剂的优缺点。重点阐述了两类新型相变吸收剂(液-液相变溶剂和液-固相变溶剂)的研究进展。指出:新型相变溶剂是理想的CO_2吸收剂,用其捕集CO_2可有效降低吸收剂的再生能耗;相变溶剂吸收CO_2的传质反应动力学以及不同类型相变溶剂的挥发和降解特性应作为今后该领域的研究重点。

Chemical solvent absorption method is the most used technology for post-combustion capture of CO2. The mechanism and research status of chemical solvent absorption method are introduced. Several kinds of common CO2 absorbents are compared by their advantages and disadvantages. The research progresses on two new phase change absorbents （liquid-liquid phase change solvent and liquid-solid phase change solvent）are explained. It is pointed out that： The new phase change solvents are ideal CO2 absorbents, which can effectively reduce the energy consumption of absorbent regeneration after CO2 capture; The future research should be focused on the mass transfer reaction kinetics for CO2 absorbed by phase change solvent and the volatilization and degradation characteristics of different phase change solvents.