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CO2 capture process intensification of water-lean methyl diethanolamine-piperazine solvent: Experiments and response surface modeling

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  • Choubtashani, Shima
  • Rashidi, Hamed

Abstract

Today, the use of water-lean solvents in the absorption process to reduce greenhouse gas emissions has been contemplated by many researchers. To investigate the performance of the water-lean solvent, methyl diethanolamine-piperazine-methanol, in the absorption process of carbon dioxide in the microreactor, the effect of various factors such as: concentration of methyl diethanolamine-piperazine 30–50 wt%, temperature 20–40 °C, the solvent inlet flow 3–9 ml/min and the concentration of carbon dioxide 5–15 vol% were evaluated. The carbon dioxide removal percentage, volumetric mass transfer coefficient and molar flux have been considered as responses. The Box-Behnken Response Surface method was used to design the experiments and model the results. A quadratic model has been proposed to predict the responses. The order of the effect of the variables on the CO2 removal efficiency was as follows: solvent flow rate (49.55%) > solvent concentration (24.59%) > absorption temperature (18.05%). The highest CO2 removal efficiency of 94.62% was achieved at optimal temperature of 30 °C and CO2 concentration of 10 vol%, as well as the maximum concentration of amine and solvent flow. The results show that application of methanol as a low-cost and affordable physical solvent reasonably improves the carbon capture performance.

Suggested Citation

  • Choubtashani, Shima & Rashidi, Hamed, 2023. "CO2 capture process intensification of water-lean methyl diethanolamine-piperazine solvent: Experiments and response surface modeling," Energy, Elsevier, vol. 267(C).
    • Handle: RePEc:eee:energy:v:267:y:2023:i:c:s0360544222033333
    DOI: 10.1016/j.energy.2022.126447
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    References listed on IDEAS

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    1. Rashidi, Hamed & Rasouli, Parvaneh & Azimi, Hossein, 2022. "A green vapor suppressing agent for aqueous ammonia carbon dioxide capture solvent: Microcontactor mass transfer study," Energy, Elsevier, vol. 244(PA).
    2. Rashidi, Hamed & Sahraie, Sasan, 2021. "Enhancing carbon dioxide absorption performance using the hybrid solvent: Diethanolamine-methanol," Energy, Elsevier, vol. 221(C).
    3. Sarlak, Shokouh & Valeh-e-Sheyda, Peyvand, 2022. "The contribution of l-Arginine to the mass transfer performance of CO2 absorption by an aqueous solution of methyl diethanolamine in a microreactor," Energy, Elsevier, vol. 239(PD).
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    Cited by:

    1. Gautam, Ashish & Mondal, Monoj Kumar, 2024. "Post-combustion CO2 absorption-desorption performance of novel aqueous binary amine blend of Hexamethylenediamine (HMDA) and 2-Dimethylaminoethanol (DMAE)," Energy, Elsevier, vol. 296(C).
    2. Song, Yawei & Su, Sheng & Liu, Yushuai & Zhao, Zheng & Xu, Kai & Xu, Jun & Jiang, Long & Wang, Yi & Hu, Song & Xiang, Jun, 2024. "Characteristics of OH formation during single coal particle ignition and volatile combustion in O2/N2 and O2/CO2 atmospheres," Energy, Elsevier, vol. 288(C).

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