CO2 absorption/desorption and mass transfer performance of MDEA-MEA blended solution in micropacked bed reactors

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science Pub Date : 2025-02-07 DOI:10.1016/j.ces.2025.121342

Le Sang , Tao Zhou , Wei-Yao Yang , Yong Cai , Hong-Da Zhang , Yu Lang

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引用次数: 0

Abstract

Micropacked bed reactors (μPBRs) present excellent transport performance, but lack of related MEA/MDEA blended solution for CO₂ absorption/desorption that hinder the application of decarbonization. In this study, CO₂ absorption/desorption and mass transfer performance in MEA/MDEA blended solution have been investigated in μPBRs with ceramic beads. The effects of operating conditions including fluid superficial velocity, temperature, initial concentration and loading CO₂ of MEA/MDEA blended solution on the absorption/desorption efficiency, desorption rate, and mass transfer coefficient are discussed. The value of k_La of μPBRs with MEA/MDEA blended solution is 0.45 ∼ 8.42 s⁻¹ for CO₂ absorption process, which is bigger than that of conventional reactors and μPBRs with single component amine. For desorption process, the value of desorption efficiency and rate is 19.6–52.1 % and 0.08–1.46 mmol/min, respectively. Compared to the microchannel reactors, MEA/MDEA blended solution shows high desorption efficiency and rate in μPBRs. Additionally, the empirical correlation of k_La is proposed for CO₂ absorption.

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来源期刊

Chemical Engineering Science 工程技术-工程：化工

CiteScore

7.50

自引率

8.50%

发文量

1025

审稿时长

50 days

期刊介绍： Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline. Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.