Abstract
[Introduction] Chemical absorption based on amines is the most mature technology for post-combustion CO2 capture. However, this technology has the drawback of high energy cost, and developing new amine absorbent as an alternative of monoethanolamine (MEA) solution will be an important method to deal with this problem. [Method] In this review, the amine absorbent was classified into four categories according to the compositions, namely single amine absorbent, blended amine absorbent, phase-change amine absorbent and water-lean amine absorbent. The technological characteristics and research situation of these absorbents were introduced. [Result] The blended amines combine the advantages of different single amine, showing good CO2 capture performance with high reaction rate, high absorption capacity and low energy cost. Phase-change amine absorbent and water-lean amine absorbent are the new generation of absorbents, which have great potential, but still need to be further studied and improved. [Conclusion] Therefore, blended amine is a more mature solvent which has better advantages in industrial application in the near term.
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