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Modeling and simulation of HI and H2SO4 thermal decomposers for a 50NL/h sulfur-iodine hydrogen production test facility

Author

Listed:
  • Shin, Youngjoon
  • Lee, Taehoon
  • Lee, Kiyoung
  • Kim, Minhwan

Abstract

A 50NL-H2/h hydrogen production scale sulfur-iodine (SI) thermochemical process test facility to be operated under a pressurized environment has been constructed in Korea. This study focused on the catalyst-packed type HI thermal decomposer and bayonet type H2SO4 thermal decomposer, which are the key components for the 50NL-H2/h SI test facility. To sustain a closed loop operation of the SI process, the catalyst particles packed in the top of the H2SO4 thermal decomposer are protected from coming into contact with the inlet sulfuric acid aqueous solution, and the production molar ratio of oxygen discharged from the H2SO4 thermal decomposer to hydrogen discharged from the HI thermal decomposer always satisfies 0.5/1. Based on the design specifications and mass balance of the SI integrated process of 50NL-H2/h, numerical calculations for the two decomposers were done to evaluate their start-up and static behaviors. Based on the results of these calculations, it is predicted that the boiling interface of the sulfuric acid solution is located around 280mm from the bottom of the electric furnace to heat the bayonet type H2SO4 thermal decomposer, which is far from the catalyst-packed region. It is also proposed that the proper operating temperature of the HI thermal decomposer to satisfy the hydrogen production rate of 50NL-H2/h and sustain the closed loop operation of the SI process is 587°C.

Suggested Citation

  • Shin, Youngjoon & Lee, Taehoon & Lee, Kiyoung & Kim, Minhwan, 2016. "Modeling and simulation of HI and H2SO4 thermal decomposers for a 50NL/h sulfur-iodine hydrogen production test facility," Applied Energy, Elsevier, vol. 173(C), pages 460-469.
  • Handle: RePEc:eee:appene:v:173:y:2016:i:c:p:460-469
    DOI: 10.1016/j.apenergy.2016.04.015
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    References listed on IDEAS

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    1. Li, Hongqiang & Tan, Geng & Zhang, Wenyu & Suppiah, Sam, 2012. "Development of direct resistive heating method for SO3 decomposition in the S–I cycle for hydrogen production," Applied Energy, Elsevier, vol. 93(C), pages 59-64.
    2. Zhang, Yanwei & Yang, Hui & Zhou, Junhu & Wang, Zhihua & Liu, Jianzhong & Cen, Kefa, 2014. "Detailed kinetic modeling of homogeneous H2SO4 decomposition in the sulfur–iodine cycle for hydrogen production," Applied Energy, Elsevier, vol. 130(C), pages 396-402.
    3. Li, Po-Jui & Hung, Tzu-Chen & Pei, Bau-Shei & Lin, Jaw-Ren & Chieng, Ching-Chang & Yu, Ge-Ping, 2012. "A thermodynamic analysis of high temperature gas-cooled reactors for optimal waste heat recovery and hydrogen production," Applied Energy, Elsevier, vol. 99(C), pages 183-191.
    4. Nguyen, Thanh D.B. & Gho, Yun-Ki & Cho, Won Chul & Kang, Kyoung Soo & Jeong, Seong Uk & Kim, Chang Hee & Park, Chu-Sik & Bae, Ki-Kwang, 2014. "Kinetics and modeling of hydrogen iodide decomposition for a bench-scale sulfur–iodine cycle," Applied Energy, Elsevier, vol. 115(C), pages 531-539.
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    Cited by:

    1. Qunxiang Gao & Ping Zhang & Wei Peng & Songzhe Chen & Gang Zhao, 2021. "Structural Design Simulation of Bayonet Heat Exchanger for Sulfuric Acid Decomposition," Energies, MDPI, vol. 14(2), pages 1-18, January.
    2. Sun, Qi & Gao, Qunxiang & Zhang, Ping & Peng, Wei & Chen, Songzhe, 2020. "Modeling sulfuric acid decomposition in a bayonet heat exchanger in the iodine-sulfur cycle for hydrogen production," Applied Energy, Elsevier, vol. 277(C).
    3. Ni, Hang & Peng, Wei & Qu, Xinhe & Zhao, Gang & Zhang, Ping & Wang, Jie, 2022. "Thermodynamic analysis of a novel hydrogen–electricity–heat polygeneration system based on a very high-temperature gas-cooled reactor," Energy, Elsevier, vol. 249(C).
    4. Ni, Hang & Qu, Xinhe & Peng, Wei & Zhao, Gang & Zhang, Ping, 2023. "Study of two innovative hydrogen and electricity co-production systems based on very-high-temperature gas-cooled reactors," Energy, Elsevier, vol. 273(C).
    5. Shin, Youngjoon & Lim, Jihong & Lee, Taehoon & Lee, Kiyoung & Jo, Changkeun & Kim, Minhwan, 2017. "Designs and CFD analyses of H2SO4 and HI thermal decomposers for a semi-pilot scale SI hydrogen production test facility," Applied Energy, Elsevier, vol. 204(C), pages 390-402.

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