近年来,为进一步降低燃煤电厂产生CO2造成的碳捕集能耗,基于传统有机胺化学吸收剂研发的相变吸收剂成为 CO2 捕集、利用与封存(CCUS)技术的研究热点,相较于传统有机胺相变吸收剂,物理溶剂型相变吸收剂具有更优异的性能.首先,从传统相变吸收剂研究现状出发,阐述了传统相变吸收剂存在的不足;然后,以此为切入点,结合溶剂组成和相变机理,重点综述了物理溶剂型相变吸收剂,主要包括醇胺混合类、砜胺混合类和醚胺混合类溶剂的研究进展,从分相情况和性能提升等方面对其进行介绍和分析,比较其优缺点;最后,结合研究现状和工业应用需求,指出物理溶剂型相变吸收剂的未来研究方向.
Research progress in physical solvent type phase change adsorbents for CO2 capture
In recent years,in order to further reduce the carbon capture energy consumption caused by CO2 generation in coal-fired power plants,phase change adsorbents based on traditional organic amine chemical adsorbents have become a research hotspot in CO2 capture,utilization,and storage(CCUS)technology,which show better performance in comparison to traditional organic amine phase change adsorbents.Here,the shortcomings of traditional phase change adsorbents were firstly described based on their research status quo.In combination with solvent composition and phase change mechanism,new phase change adsorbents,developed to address the shortcomings of traditional ones and represented by physical solvent type phase change adsorbents,such as alcohol amine mixed type,sulfone amine mixed type,and ether amine mixed type phase change adsorbents,were then specifically introduced,analyzed and compared from the aspects of phase separation,performance improvement as well as the advantages and disadvantages.Finally,the future research directions of physical solvent based phase change adsorbents were discussed based on the current research status and industrial application needs.
coal fired power plantCO2 capturechemical absorption methodphase change absorptionphysical solvent type adsorbents
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