摘要
Abstract
With the extensive use of fossil fuels,the emission of carbon dioxide(CO2)has increased year by year,causing global climate problems.To address this global issue,carbon capture,utilization,and storage(CCUS)is considered an important means to slow down CO2 emissions.Currently,organic amines are commonly used as CO2 absorbents,but their high regeneration energy consumption leads to high capture costs,which hinders the commercial deployment of CCUS.As a low-energy consumption absorbent,the liquid-liquid phase change absorbent,formulated with organic amines,functions as a solution capable of compensating for this deficiency.Liquid-liquid phase change absorbents are homogeneous under normal conditions,but phase change can be triggered when the polarity,hydrophilicity,or hydrogen bond strength changes,resulting in the formation of a CO2-lean phase and a CO2-rich phase.Only one phase enriched in CO2 is sent to regeneration,thus reducing regeneration energy consumption.This review summarizes the research progress of liquid-liquid phase change absorbents in recent years,and compares key aspects such as phase change characteristics,phase change mechanism,absorption loading,and regeneration energy consumption.Finally,combined with the demand for CO2 capture,other research contents that need to be improved are pointed out and future research directions are prospected.关键词
二氧化碳捕集/有机胺/能耗/相变/吸收Key words
CO2 capture/organic amines/energy consumption/phase change/absorption分类
化学工程
