Comprehensive mass transfer and reaction kinetics studies of CO2 absorption into aqueous solutions of blended MDEA-MEA

Teerawat Sema, Abdulaziz Naami, Kaiyun Fu, Mohamed Edali, Helei Liu, Huancong Shi, Zhiwu Liang*, Raphael Idem, Paitoon Tontiwachwuthikul

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

146 引用 (Scopus)

摘要

In the present work, the reaction kinetics and mass transfer performance of CO2 absorption into aqueous solutions of blended MDEA-MEA solutions were comprehensively studied. The reaction kinetics was investigated using a laminar jet absorber in terms of a second order reaction rate constant and enhancement factor. The mass transfer performance was evaluated experimentally in a lab-scale absorber packed with high efficiency DX structured packing in terms of CO2 concentration profile and over all mass transfer coefficient (KGav). The experiments were conducted over the MDEA/MEA concentrations of 27/3, 25/5, and 23/7wt% MDEA/wt% MEA (which equivalent to MDEA-MEA molar ratios of 2.3/0.5, 2.1/0.8, and 1.95/1.16M, respectively). It was found that kMEA was successfully extracted and can be expressed as: k MEA = (5.127 × 108)exp -3373.8T. The results also show that the operating parameters (i.e., MDEA-MEA blended ratio, temperature, and CO2 loading) affect both the reaction kinetics and mass transfer performance significantly. Lastly, the MDEA-MEA blended ratio of 1.95/1.16 provided the highest reaction kinetics and mass transfer performance among the three concentrations investigated in this study.

源语言英语
页(从-至)501-512
页数12
期刊Chemical Engineering Journal
209
DOI
出版状态已出版 - 5 10月 2012
已对外发布

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Sema, T., Naami, A., Fu, K., Edali, M., Liu, H., Shi, H., Liang, Z., Idem, R., & Tontiwachwuthikul, P. (2012). Comprehensive mass transfer and reaction kinetics studies of CO2 absorption into aqueous solutions of blended MDEA-MEA. Chemical Engineering Journal, 209, 501-512. https://doi.org/10.1016/j.cej.2012.08.016