AMP-EAE 混合胺的二氧化碳捕获性能:微通道中的吸收和饱和溶液中的解吸

IF 7.4 2区 工程技术 Q1 ENGINEERING, CHEMICAL
Yaxuan Zhen, Chunying Zhu, Taotao Fu, Youguang Ma
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引用次数: 0

摘要

混合有机胺溶液被认为是开发高效、低能耗吸收剂的有效策略,因为它有可能结合单一胺的优点。以三种摩尔比制备了 2-氨基-2-甲基-1-丙醇(AMP)和 2-(乙基氨基)乙醇(EAE)胺混合物:混合物-1(nAMP:nEAE = 3:1)、混合物-2(nAMP:nEAE = 1:1)和混合物-3(nAMP:nEAE = 1:3)。利用蛇形微通道研究了气液流速、胺浓度、摩尔比、温度和二氧化碳浓度对吸收性能的影响。此外,还探讨了胺浓度和摩尔比对饱和溶液解吸性能的影响。通过测量吸收率、效率和负荷,以及解吸效率、能耗、循环容量和平均解吸率,评估了胺混合物在吸收和解吸方面的性能。在相同的操作条件下,解吸结果与基准溶剂 30 wt% MEA 的解吸结果进行了比较。结果表明,25 wt% 混合-2 溶液的性能非常出色,在气液比为 20 的条件下,与 AMP 水溶液相比,吸收效率提高了 15%。此外,循环容量和平均解吸率是 30 wt% MEA 溶液的 1.7 倍。值得注意的是,25 wt% blend-2 溶液的解吸能耗仅为 30 wt% MEA 溶液的 60%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
CO2 capture performance of AMP-EAE amine blends: Absorption in the microchannel and desorption from saturated solutions
Blended organic amine solutions are considered an effective strategy for developing highly efficient and low energy-consuming absorbents due to the possibility of combining the advantages of single amine. The 2-amino-2-methyl-1-propanol (AMP) and 2-(ethylamino)ethanol (EAE) amine blends were prepared in three molar ratios: blend-1 (nAMP:nEAE = 3:1), blend-2 (nAMP:nEAE = 1:1), and blend-3 (nAMP:nEAE = 1:3). The impacts of gas-liquid flow rate, amine concentration, molar ratio, temperature, and CO2 concentration on absorption performance were investigated using the serpentine microchannel. Additionally, the effects of amine concentration and molar ratio on the desorption performance of saturated solutions were also explored. The performance of amine blends in absorption and desorption was evaluated by measuring absorption rate, efficiency, and loading, as well as desorption efficiency, energy consumption, cycle capacity, and average desorption rate. The desorption results were compared to those of the benchmark solvent, 30 wt% MEA, under identical operating conditions. The results indicate that the 25 wt% blend-2 solution performs exceptionally well, exhibiting a 15 % increase in absorption efficiency compared to the AMP aqueous solution at a gas-liquid ratio of 20. Additionally, the cycle capacity and average desorption rate are 1.7 times higher than those of the 30 wt% MEA solution. Notably, the energy consumption of the 25 wt% blend-2 solution for desorption is only 60 % of the 30 wt% MEA solution.
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来源期刊
Journal of Environmental Chemical Engineering
Journal of Environmental Chemical Engineering Environmental Science-Pollution
CiteScore
11.40
自引率
6.50%
发文量
2017
审稿时长
27 days
期刊介绍: The Journal of Environmental Chemical Engineering (JECE) serves as a platform for the dissemination of original and innovative research focusing on the advancement of environmentally-friendly, sustainable technologies. JECE emphasizes the transition towards a carbon-neutral circular economy and a self-sufficient bio-based economy. Topics covered include soil, water, wastewater, and air decontamination; pollution monitoring, prevention, and control; advanced analytics, sensors, impact and risk assessment methodologies in environmental chemical engineering; resource recovery (water, nutrients, materials, energy); industrial ecology; valorization of waste streams; waste management (including e-waste); climate-water-energy-food nexus; novel materials for environmental, chemical, and energy applications; sustainability and environmental safety; water digitalization, water data science, and machine learning; process integration and intensification; recent developments in green chemistry for synthesis, catalysis, and energy; and original research on contaminants of emerging concern, persistent chemicals, and priority substances, including microplastics, nanoplastics, nanomaterials, micropollutants, antimicrobial resistance genes, and emerging pathogens (viruses, bacteria, parasites) of environmental significance.
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