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Modelling, scale-up and techno-economic assessment of rotating packed bed absorber for CO2 capture from a 250 MWe combined cycle gas turbine power plant

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  • Otitoju, Olajide
  • Oko, Eni
  • Wang, Meihong

Abstract

The huge sizes and costs of the packed bed (PB) absorbers and strippers in solvent-based post-combustion carbon capture are part of the challenges limiting its commercialization. The rotating packed bed (RPB) absorbers and strippers have the potential to reduce the size and cost of the CO2 capture process when used to replace their PB counterparts. However, the size and cost have not been quantified for a large-scale RPB. Therefore, this paper is devoted to providing detailed technical and economic assessments of a large-scale RPB absorber operated with concentrated (55-75 wt%) monoethanoamine (MEA). To achieve this, a steady-state rate-based model of the RPB absorber was developed and validated in Aspen Custom Modeller®. The model was scaled up to capture CO2 from the flue gas of a 250 MWe CCGT power plant using an iterative scale-up methodology proposed in this study. Technical assessments of the large-scale RPB absorber indicated that a 4–11 times volume reduction factor was achieved with 55 wt% MEA concentration compared to PB absorbers. The highest volume reduction factors of 5–13 times were achieved in RPB absorber operated with 75 wt% MEA. Economic assessments show that the capital expenditures of the RPB absorbers were lower by 3–53%. The CO2 capture cost was also lower ($6.5/tCO2–$9/tCO2) compared to $15/tCO2–$24/tCO2 obtained for the PB absorbers.

Suggested Citation

  • Otitoju, Olajide & Oko, Eni & Wang, Meihong, 2023. "Modelling, scale-up and techno-economic assessment of rotating packed bed absorber for CO2 capture from a 250 MWe combined cycle gas turbine power plant," Applied Energy, Elsevier, vol. 335(C).
  • Handle: RePEc:eee:appene:v:335:y:2023:i:c:s0306261923001113
    DOI: 10.1016/j.apenergy.2023.120747
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    References listed on IDEAS

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    1. Oko, Eni & Ramshaw, Colin & Wang, Meihong, 2018. "Study of intercooling for rotating packed bed absorbers in intensified solvent-based CO2 capture process," Applied Energy, Elsevier, vol. 223(C), pages 302-316.
    2. Joel, Atuman S. & Wang, Meihong & Ramshaw, Colin & Oko, Eni, 2017. "Modelling, simulation and analysis of intensified regenerator for solvent based carbon capture using rotating packed bed technology," Applied Energy, Elsevier, vol. 203(C), pages 11-25.
    3. Otitoju, Olajide & Oko, Eni & Wang, Meihong, 2021. "Technical and economic performance assessment of post-combustion carbon capture using piperazine for large scale natural gas combined cycle power plants through process simulation," Applied Energy, Elsevier, vol. 292(C).
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    Cited by:

    1. Jung, Howoun & Park, Nohjin & Lee, Jay H., 2024. "Evaluating the efficiency and cost-effectiveness of RPB-based CO2 capture: A comprehensive approach to simultaneous design and operating condition optimization," Applied Energy, Elsevier, vol. 365(C).
    2. Sterkhov, K.V. & Khokhlov, D.A. & Zaichenko, M.N., 2024. "Zero carbon emission CCGT power plant with integrated solid fuel gasification," Energy, Elsevier, vol. 294(C).

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