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Energy Minimization in Piperazine Promoted MDEA-Based CO 2 Capture Process

Author

Listed:
  • Bilal Alam Khan

    (Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy)

  • Asad Ullah

    (Department of Mechanical Engineering, Baluchistan university of Information & Technology, Engineering and Management Sciences (BUITEMS), Quetta 87300, Pakistan)

  • Muhammad Wajid Saleem

    (Department of Mechanical Engineering, University of Engineering and Technology (UET) Lahore, Lahore 54890, Pakistan)

  • Abdullah Nawaz Khan

    (Department of Mechanical Engineering, Baluchistan university of Information & Technology, Engineering and Management Sciences (BUITEMS), Quetta 87300, Pakistan)

  • Muhammad Faiq

    (Department of Mechanical Engineering, Baluchistan university of Information & Technology, Engineering and Management Sciences (BUITEMS), Quetta 87300, Pakistan)

  • Mir Haris

    (Department of Mechanical Engineering, Baluchistan university of Information & Technology, Engineering and Management Sciences (BUITEMS), Quetta 87300, Pakistan)

Abstract

A piperazine (PZ)-promoted methyldiethanolamine (MDEA) solution for a carbon dioxide (CO 2 ) removal process from the flue gas of a large-scale coal power plant has been simulated. An Aspen Plus ® was used to perform the simulation process. Initially, the effects of MDEA/PZ concentration ratio and stripper pressure on the regeneration energy of CO 2 capture process were investigated. The MDEA/PZ concentration ratio of 35/15 wt.% (35 wt. MDEA and 15 wt.% PZ) was selected as an appropriate concentration. The reboiler duty of 3.235 MJ/kg CO 2 was obtained at 35/15 wt.% concentration ratio of MDEA/PZ. It was considered a reference or base case, and process modifications including rich vapor compression (RVC) process, cold solvent split (CSS), and the combination of both processes were investigated to check its effect on the energy requirement. A total equivalent work of 0.7 MJ e /kg CO 2 in the RVC and a reboiler duty of 2.78 MJ/kg CO 2 was achieved in the CSS process. Similarly, the total equivalent work, reboiler duty, and condenser duty of 0.627 MJ e /kg CO 2 , 2.44 MJ/kg CO 2 , and 0.33 MJ/kg CO 2 , respectively, were obtained in the combined process. The reboiler duty and the total equivalent work were reduced by about 24.6 and 16.2%, respectively, as compared to the reference case. The total energy cost saving was 1.79 M$/yr. Considering the additional equipment cost in the combined process, the total cost saving was 0.67 M$ per year.

Suggested Citation

  • Bilal Alam Khan & Asad Ullah & Muhammad Wajid Saleem & Abdullah Nawaz Khan & Muhammad Faiq & Mir Haris, 2020. "Energy Minimization in Piperazine Promoted MDEA-Based CO 2 Capture Process," Sustainability, MDPI, vol. 12(20), pages 1-13, October.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:20:p:8524-:d:428687
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    References listed on IDEAS

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    1. Li, Kangkang & Leigh, Wardhaugh & Feron, Paul & Yu, Hai & Tade, Moses, 2016. "Systematic study of aqueous monoethanolamine (MEA)-based CO2 capture process: Techno-economic assessment of the MEA process and its improvements," Applied Energy, Elsevier, vol. 165(C), pages 648-659.
    2. Zhao, Bin & Liu, Fangzheng & Cui, Zheng & Liu, Changjun & Yue, Hairong & Tang, Siyang & Liu, Yingying & Lu, Houfang & Liang, Bin, 2017. "Enhancing the energetic efficiency of MDEA/PZ-based CO2 capture technology for a 650MW power plant: Process improvement," Applied Energy, Elsevier, vol. 185(P1), pages 362-375.
    3. Cristóbal, Jorge & Guillén-Gosálbez, Gonzalo & Jiménez, Laureano & Irabien, Angel, 2012. "Optimization of global and local pollution control in electricity production from coal burning," Applied Energy, Elsevier, vol. 92(C), pages 369-378.
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    2. Branimir Tramošljika & Paolo Blecich & Igor Bonefačić & Vladimir Glažar, 2021. "Advanced Ultra-Supercritical Coal-Fired Power Plant with Post-Combustion Carbon Capture: Analysis of Electricity Penalty and CO 2 Emission Reduction," Sustainability, MDPI, vol. 13(2), pages 1-20, January.

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