化工学报 ›› 2018, Vol. 69 ›› Issue (5): 1809-1818.DOI: 10.11949/j.issn.0438-1157.20171487

• 综述与专论 • 上一篇    下一篇

液-液相变溶剂捕集CO2技术研究进展

许咪咪, 王淑娟   

  1. 清华大学热科学与动力工程教育部重点实验室, 北京市盐碱及荒漠化地区生态修复与固碳工程技术研究中心, 清华大学热能工程系, 北京 100084
  • 收稿日期:2017-11-07 修回日期:2018-01-09 出版日期:2018-05-05 发布日期:2018-05-05
  • 通讯作者: 王淑娟
  • 基金资助:

    国家重点研发计划项目(2017YFB0603301-2)。

Research progress in CO2 capture technology using liquid-liquid biphasic solvents

XU Mimi, WANG Shujuan   

  1. Department of Thermal Engineering, Key Laboratory for Thermal Science and Power Engineering, Ministry of Education, Beijing Engineering Research Center for Ecological Restoration and Carbon Fixation of Saline-alkaline and Desert Land, Tsinghua University, Beijing 100084, China
  • Received:2017-11-07 Revised:2018-01-09 Online:2018-05-05 Published:2018-05-05
  • Supported by:

    supported by the National Key R&D Program (2017YFB0603301-2).

摘要:

化学溶剂吸收法是最有应用潜力的燃烧后二氧化碳脱除技术之一,较高的溶剂再生能耗阻碍了其进一步的工业应用。液-液相变溶剂由于具有降低吸收再生能耗的潜力,成为新型吸收剂的研究热点。综述了液-液相变溶剂的研究现状,从溶剂组成及其相变机理角度出发,将液-液相变溶剂分为热致相变溶剂、有机胺-低吸收速率胺溶剂、化学-物理溶剂、有机胺-离子液体溶剂四类吸收剂,分别介绍各类溶剂的研究进展,重点阐述其吸收性能及相变机理,并分析比较了各溶剂的优缺点。分析表明液-液相变溶剂节能潜力较大,今后的研究工作应侧重于相变溶剂的设计原则及分层机理的深入探讨。

关键词: 二氧化碳捕集, 吸收, 溶剂, 液-液相变

Abstract:

Chemical absorption is one of the most promising technologies for post-combustion CO2 capture. But the high energy consumption of solvent regeneration process will limit its further development. The liquid-liquid biphasic solvents have been widely concerned by researchers due to the potential of reducing the energy consumption of CO2 desorption process. This paper gives an overview of the development of liquid-liquid biphasic solvents. According to the solvents composition and the phase separation mechanism, the liquid-liquid biphasic solvents are divided into thermomorphic biphasic solvents, organic amine-low absorption rate amine solvents, chemical-physical solvents, and organic amine-ionic liquid solvents. The research progress of various solvents is introduced, including the absorption performance and the phase separation mechanism. The advantages and disadvantages of the solvents are analyzed. It can be concluded that liquid-liquid biphasic solvents have great potential for energy saving. The future research should focus on the design principle and the deep phase separation mechanism of liquid-liquid biphasic solvents.

Key words: CO2 capture, absorption, solvents, liquid-liquid biphasic

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