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Ultrasound intensify CO2 desorption from pressurized loaded monoethanolamine solutions. II. Optimization and cost estimation

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  • Ying, Jiru
  • Eimer, Dag A.
  • Mathisen, Anette
  • Brakstad, Frode
  • Haugen, Hans Aksel

Abstract

Optimization and cost estimation were performed for the use of ultrasound for intensifying CO2 reboiler stripping from lean monoethanolamine (MEA) aqueous solutions at 1.0 barg. This work was based on typical industrial reboiler operation conditions. Experiments were run by intermittently applying ultrasound for CO2 stripping. A multi-variable data analysis was employed to explain the results and find the optimum for ultrasound operation. The results show that the CO2 stripping rate by ultrasound is more than 3 times than heat only in the reboiler. A normalized specific energy consumption was defined based on the classic industrial case (4.2 kJ/kg CO2), and the normalized specific energy consumption 3.6 MJ/kg CO2 was deduced, showing 14% energy saving. Cost estimations have been conducted using Aspen Plus V9.0 and Aspen In-plant Cost Estimator for the industrial cases with/without the assistance of ultrasound. Total capture cost is 60.2 EUR/t CO2 and cost saving is 19% when the CO2 loading of the lean MEA solution can be further decreased to 0.20 mol/mol from 0.44 mol/mol assisted by ultrasound.

Suggested Citation

  • Ying, Jiru & Eimer, Dag A. & Mathisen, Anette & Brakstad, Frode & Haugen, Hans Aksel, 2019. "Ultrasound intensify CO2 desorption from pressurized loaded monoethanolamine solutions. II. Optimization and cost estimation," Energy, Elsevier, vol. 173(C), pages 218-228.
    • Handle: RePEc:eee:energy:v:173:y:2019:i:c:p:218-228
    DOI: 10.1016/j.energy.2019.02.070
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    1. Ying, Jiru & Eimer, Dag A. & Brakstad, Frode & Haugen, Hans Aksel, 2018. "Ultrasound intensified CO2 desorption from pressurized loaded monoethanolamine solutions. I. parameters investigation and modelling," Energy, Elsevier, vol. 163(C), pages 168-179.
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    Cited by:

    1. Zarei, Fariba & Bagherzadeh Jahromi, Farideh & Elhambakhsh, Abbas & Keshavarz, Peyman, 2023. "Enhanced CO2 absorption and reduced regeneration energy consumption using modified magnetic NPs," Energy, Elsevier, vol. 278(C).
    2. Dehbani, Maryam & Rashidi, Hamed, 2023. "Simultaneous use of microfluidics, ultrasound and alcoholic solvents for improving CO2 desorption process," Energy, Elsevier, vol. 276(C).

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    1. Dehbani, Maryam & Rashidi, Hamed, 2023. "Simultaneous use of microfluidics, ultrasound and alcoholic solvents for improving CO2 desorption process," Energy, Elsevier, vol. 276(C).
    2. Zarei, Fariba & Bagherzadeh Jahromi, Farideh & Elhambakhsh, Abbas & Keshavarz, Peyman, 2023. "Enhanced CO2 absorption and reduced regeneration energy consumption using modified magnetic NPs," Energy, Elsevier, vol. 278(C).

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