CO2 absorption enhancement with MEA in micropacked bed reactors: Mass transfer experiment and model study

Tao Zhou; Jinyan Hu; Hongda Zhang; Hansheng Li; Le Sang

doi:10.1016/j.seppur.2024.126722

CO₂ absorption enhancement with MEA in micropacked bed reactors: Mass transfer experiment and model study

Tao Zhou, Jinyan Hu, Hongda Zhang, Hansheng Li, Le Sang^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Micropacked bed reactors (μPBRs) shows excellent mass transfer characteristics, but related mass transfer experimental and models are inadequate for CO₂ absorption. Herein, a gas-side overall volumetric mass transfer coefficient (K_Ga) model of μPBRs was developed based on the two-film theory. Effects of bed inner diameter and water contact angle (CA) of particle on effective interfacial area (a) were discussed. Then, the mass transfer model was validated by MEA-CO₂ absorption efficiency (η) with AARD of 7.72%. The K_Ga of μPBRs (2.16–13.16 kmol/(m³·h·kPa)) is much larger than that of the traditional multiphase reactors. The ceramic beads with big water CA for d_c/d_p more than 10 and glass beads with small water CA for d_c/d_p less than 10 can enhance CO₂ absorption efficiency in μPBRs. Additionally, the empirical correlation of a and K_Ga were proposed.

Original language	English
Article number	126722
Journal	Separation and Purification Technology
Volume	339
DOIs	https://doi.org/10.1016/j.seppur.2024.126722
Publication status	Published - 2 Jul 2024

Keywords

CO absorption
Interfacial area
Mass transfer model
Micropacked bed reactor

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10.1016/j.seppur.2024.126722

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@article{e1a87d9417394dc88f535d7b767d24d5,

title = "CO2 absorption enhancement with MEA in micropacked bed reactors: Mass transfer experiment and model study",

abstract = "Micropacked bed reactors (μPBRs) shows excellent mass transfer characteristics, but related mass transfer experimental and models are inadequate for CO2 absorption. Herein, a gas-side overall volumetric mass transfer coefficient (KGa) model of μPBRs was developed based on the two-film theory. Effects of bed inner diameter and water contact angle (CA) of particle on effective interfacial area (a) were discussed. Then, the mass transfer model was validated by MEA-CO2 absorption efficiency (η) with AARD of 7.72%. The KGa of μPBRs (2.16–13.16 kmol/(m3·h·kPa)) is much larger than that of the traditional multiphase reactors. The ceramic beads with big water CA for dc/dp more than 10 and glass beads with small water CA for dc/dp less than 10 can enhance CO2 absorption efficiency in μPBRs. Additionally, the empirical correlation of a and KGa were proposed.",

keywords = "CO absorption, Interfacial area, Mass transfer model, Micropacked bed reactor",

author = "Tao Zhou and Jinyan Hu and Hongda Zhang and Hansheng Li and Le Sang",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier B.V.",

year = "2024",

month = jul,

day = "2",

doi = "10.1016/j.seppur.2024.126722",

language = "English",

volume = "339",

journal = "Separation and Purification Technology",

issn = "1383-5866",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - CO2 absorption enhancement with MEA in micropacked bed reactors

T2 - Mass transfer experiment and model study

AU - Zhou, Tao

AU - Hu, Jinyan

AU - Zhang, Hongda

AU - Li, Hansheng

AU - Sang, Le

PY - 2024/7/2

Y1 - 2024/7/2

N2 - Micropacked bed reactors (μPBRs) shows excellent mass transfer characteristics, but related mass transfer experimental and models are inadequate for CO2 absorption. Herein, a gas-side overall volumetric mass transfer coefficient (KGa) model of μPBRs was developed based on the two-film theory. Effects of bed inner diameter and water contact angle (CA) of particle on effective interfacial area (a) were discussed. Then, the mass transfer model was validated by MEA-CO2 absorption efficiency (η) with AARD of 7.72%. The KGa of μPBRs (2.16–13.16 kmol/(m3·h·kPa)) is much larger than that of the traditional multiphase reactors. The ceramic beads with big water CA for dc/dp more than 10 and glass beads with small water CA for dc/dp less than 10 can enhance CO2 absorption efficiency in μPBRs. Additionally, the empirical correlation of a and KGa were proposed.

AB - Micropacked bed reactors (μPBRs) shows excellent mass transfer characteristics, but related mass transfer experimental and models are inadequate for CO2 absorption. Herein, a gas-side overall volumetric mass transfer coefficient (KGa) model of μPBRs was developed based on the two-film theory. Effects of bed inner diameter and water contact angle (CA) of particle on effective interfacial area (a) were discussed. Then, the mass transfer model was validated by MEA-CO2 absorption efficiency (η) with AARD of 7.72%. The KGa of μPBRs (2.16–13.16 kmol/(m3·h·kPa)) is much larger than that of the traditional multiphase reactors. The ceramic beads with big water CA for dc/dp more than 10 and glass beads with small water CA for dc/dp less than 10 can enhance CO2 absorption efficiency in μPBRs. Additionally, the empirical correlation of a and KGa were proposed.

KW - CO absorption

KW - Interfacial area

KW - Mass transfer model

KW - Micropacked bed reactor

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U2 - 10.1016/j.seppur.2024.126722

DO - 10.1016/j.seppur.2024.126722

M3 - Article

AN - SCOPUS:85185302315

SN - 1383-5866

VL - 339

JO - Separation and Purification Technology

JF - Separation and Purification Technology

M1 - 126722

ER -

CO₂ absorption enhancement with MEA in micropacked bed reactors: Mass transfer experiment and model study

Abstract

Keywords

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