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Process and Carbon Footprint Analyses of the Allam Cycle Power Plant Integrated with an Air Separation Unit

Author

Listed:
  • Dan Fernandes

    (Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA)

  • Song Wang

    (Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA)

  • Qiang Xu

    (Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA)

  • Russel Buss

    (Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA)

  • Daniel Chen

    (Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA)

Abstract

The Allam cycle is the latest advancement in power generation technologies with a high cycle efficiency, zero NO x emission, and carbon dioxide available at pipeline specification for sequestration and utilization. The Allam cycle plant is a semi-closed, direct-fired, oxy-fuel Brayton cycle that uses high pressure supercritical carbon dioxide as a working fluid with sophisticated heat recuperation. This paper conducted process analyses including exergy analysis, sensitivity analysis, air separation unit (ASU) oxygen pump/compressor option analysis, and carbon footprint analysis for the integrated Allam power plant (natural gas)/ASU complex with a high degree of heat and work integration. Earlier works on exergy analysis were done on the Allam cycle and ASU independently. Exergy analysis on the integrated plants helps identify the equipment with the largest loss of thermodynamic efficiency. Sensitivity analysis investigated the effects of important ASU operational parameters along with equipment constraint limits on the downstream Allam cycle. Energy efficiency and carbon footprint are compared among the state-of-the-art fossil-fuel power generation cycles.

Suggested Citation

  • Dan Fernandes & Song Wang & Qiang Xu & Russel Buss & Daniel Chen, 2019. "Process and Carbon Footprint Analyses of the Allam Cycle Power Plant Integrated with an Air Separation Unit," Clean Technol., MDPI, vol. 1(1), pages 1-16, October.
    • Handle: RePEc:gam:jcltec:v:1:y:2019:i:1:p:22-340:d:276702
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    References listed on IDEAS

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    1. Scaccabarozzi, Roberto & Gatti, Manuele & Martelli, Emanuele, 2016. "Thermodynamic analysis and numerical optimization of the NET Power oxy-combustion cycle," Applied Energy, Elsevier, vol. 178(C), pages 505-526.
    2. van der Ham, L.V. & Kjelstrup, S., 2010. "Exergy analysis of two cryogenic air separation processes," Energy, Elsevier, vol. 35(12), pages 4731-4739.
    3. Zhu, Zilong & Chen, Yaping & Wu, Jiafeng & Zhang, Shaobo & Zheng, Shuxing, 2019. "A modified Allam cycle without compressors realizing efficient power generation with peak load shifting and CO2 capture," Energy, Elsevier, vol. 174(C), pages 478-487.
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    1. Aniket R. Khade & Vijaya D. Damodara & Daniel H. Chen, 2023. "Reduced Mechanism for Combustion of Ammonia and Natural Gas Mixtures," Clean Technol., MDPI, vol. 5(2), pages 1-13, April.
    2. Evangelia Pagona & Kyriaki Kalaitzidou & Vasileios Zaspalis & Anastasios Zouboulis & Manassis Mitrakas, 2022. "Effects of MgO and Fe 2 O 3 Addition for Upgrading the Refractory Characteristics of Magnesite Ore Mining Waste/By-Products," Clean Technol., MDPI, vol. 4(4), pages 1-24, October.

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