n-Butanol-Regulated Phase Separation of Aminoethylethanolamine (AEEA) as an Efficient Absorbent for CO2 Capture

IF 3.8 3区 工程技术 Q2 ENGINEERING, CHEMICAL
Jin Huang, Shaojun Jia, Wu Chen, Qi Wang, Yao Jiang, Peng Cui
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引用次数: 0

Abstract

Amine-based CO2 phase change absorbents (CPCAs) have received considerable attention for their potential energy efficiency. This study presents an aminoethylethanolamine (AEEA)-based CPCA using n-butanol (n-BuOH) as a phase separator for efficient CO2 capture. The experimental results demonstrate that the obtained CPCA of AEEA/n-BuOH/H2O exhibited a 44.0% higher cyclic capacity and 24.9% lower regeneration energy consumption compared to AEEA/H2O. In addition, quantitative NMR analysis of the species distribution in both the upper and lower phases revealed an effective separation between the phase separator and the CO2 products. Specifically, n-BuOH was present in the rich phase at only 3.2%, with the remainder consisting of CO2 products. Moreover, the phase separation mechanism was elucidated by studying the difference in dipole moments of the substances during CO2 capture. Overall, the n-BuOH-regulated AEEA-based CPCA shows promise as a candidate for practical CO2 capture applications.

Abstract Image

正丁醇调节的氨基乙基乙醇胺(AEEA)相分离作为二氧化碳捕获的高效吸收剂
胺基二氧化碳相变吸收剂(CPCA)因其潜在的能源效率而备受关注。本研究利用正丁醇(n-BuOH)作为相分离器,提出了一种基于氨基乙基乙醇胺(AEEA)的 CPCA,用于高效捕获二氧化碳。实验结果表明,与 AEEA/H2O 相比,所获得的 AEEA/n-BuOH/H2O CPCA 的循环能力提高了 44.0%,再生能耗降低了 24.9%。此外,对上相和下相中的物种分布进行的定量核磁共振分析表明,相分离器与 CO2 产物之间实现了有效分离。具体来说,富相中正丁醇的含量仅为 3.2%,其余均为 CO2 产物。此外,通过研究二氧化碳捕获过程中物质偶极矩的差异,还阐明了相分离机制。总之,正叔丁氧调控的基于 AEEA 的 CPCA 很有希望成为实际二氧化碳捕获应用的候选物质。
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来源期刊
Industrial & Engineering Chemistry Research
Industrial & Engineering Chemistry Research 工程技术-工程:化工
CiteScore
7.40
自引率
7.10%
发文量
1467
审稿时长
2.8 months
期刊介绍: ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.
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