新型相变有机胺吸收捕集CO_(2)技术研究进展  

Research progress in CO_(2)capture technology using novel biphasic organic amine absorbent

作　　者：符乐 杨阳[2] 徐文青[2] 耿錾卜 朱廷钰[2] 郝润龙[1] FU Le;YANG Yang;XU Wenqing;GENG Zanbu;ZHU Tingyu;HAO Runlong(Department of Environmental Science and Engineering,North China Electric Power University,Baoding 071003,Hebei,China;Institute of Process Engineering,Chinese Academy of Science,Beijing 100190,China;University of ChineseAcademy of Sciences,Beijing 100049,China)

机构地区：[1]华北电力大学环境科学与工程系,河北保定071003 [2]中国科学院过程工程研究所,北京100190 [3]中国科学院大学,北京100049

出　　处：《化工进展》2023年第4期2068-2080,共13页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(52100133,51978262,52170108)。

摘　　要：CO_(2)捕集、利用与封存(CCUS)技术是实现碳减排的关键技术之一,有机胺吸收技术是目前研究最广泛、最成熟的CO_(2)捕集技术,已有少数工业应用案例。吸收剂是吸收技术的核心,吸收剂的研发创新是该领域的热点方向。相比于单一相的有机胺吸收剂,相变吸收剂在吸收CO_(2)后产生相变行为,仅需对富相进行再生,可大幅减少再生体积,降低再生能耗。本文介绍了传统混合胺相变吸收体系的典型工艺、吸收机理和吸收剂研究进展,分析了吸收剂吸收CO_(2)后富相黏度高、富相体积占比大及其导致的再生能耗增加的问题。本文系统梳理了为解决上述问题而研发的四种新型的相变吸收体系,分别为空间位阻胺混合型相变吸收剂、物理溶剂混合型相变吸收剂、醇胺混合型相变吸收剂、催化剂-有机胺复合型相变吸收剂,对各类新型相变吸收体系的设计构建原理及性能强化机制进行了分析。最后,基于对研究进展的深入分析,提出了相变吸收剂的未来研究方向。CO_(2)capture,utilization and storage(CCUS)technology is one of the key technologies to achieve carbon emission reduction.The organic amine absorption technology is the most widely studied and mature CO_(2)capture technology,which already has a few industrial application cases.The absorbent is the core of absorption technology.The R&D and innovation of absorbent is the hot topic in this field.Compared with single-phase organic amine absorbents,the biphasic absorbent can significantly reduce the regeneration volume and the regeneration energy consumption,wherein,the homogenous absorbent can be separated into two phases after absorbing CO_(2),and only the CO_(2)-rich phase needs to be regenerated.This paper introduced the typical process,absorption mechanism and research progress of traditional mixed amine biphasic absorbent systems,and analyzed the problems in high viscosity,high rich phase ratio after CO_(2)absorption and the resulted increment of regeneration energy consumption.Four types of mixed biphasic absorbents to solve the above problems were systematically combed,including sterically hindered amine mixed biphasic absorbents,physical solvent mixed biphasic absorbents,alcohol amine mixed biphasic absorbents and catalyst-organic amine mixed biphasic absorbents.Moreover,the design and construction principle and performance strengthening mechanism of the aforementioned biphasic absorbents were analyzed.Finally,based on the in-depth analysis of the current research progress,the future research direction of biphasic absorbent was proposed.

关 键 词：二氧化碳捕集 化学吸收 相变吸收剂 再生能耗 催化再生 

分 类 号：X511[环境科学与工程—环境工程]