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Hydrogen production, oxygen separation and syngas oxy-combustion inside a water splitting membrane reactor

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  • Nemitallah, Medhat A.
  • Habib, Mohamed A.
  • Salaudeen, Shakirudeen A.
  • Mansir, Ibrahim

Abstract

The present work provides numerical investigations of oxygen permeation, hydrogen generation through water splitting using an oxygen transport membrane and oxy-combustion of syngas. The work involves two models; one for hydrogen generation and oxygen permeation from water splitting, and the other for syngas reaction kinetics. Considering steam dissociation reaction and oxygen permeation process, the hydrogen generation model is developed from oxygen permeation model using user defined function (UDF) that enable the transfer of oxygen across the membrane. The codes were written in C++, then compiled and hooked to the ANSYS Fluent 15.0 software. The investigations revealed that, due to combustion, the syngas reactive flow results in higher oxygen permeation and hydrogen generation rates than the non-reactive case. Effects of various influential parameters such as fuel composition, membrane thickness, operating temperature, sweep gas flow rate and CO2 circulation are investigated in the present study. It was realized that increase in sweep flow rate and inlet temperature results in enhanced oxygen permeation and hydrogen generation rates. Whereas, increase in CO/H2 ratio, membrane thickness and CO2 circulation reduces the amounts of hydrogen and oxygen generated.

Suggested Citation

  • Nemitallah, Medhat A. & Habib, Mohamed A. & Salaudeen, Shakirudeen A. & Mansir, Ibrahim, 2017. "Hydrogen production, oxygen separation and syngas oxy-combustion inside a water splitting membrane reactor," Renewable Energy, Elsevier, vol. 113(C), pages 221-234.
    • Handle: RePEc:eee:renene:v:113:y:2017:i:c:p:221-234
    DOI: 10.1016/j.renene.2017.05.086
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    References listed on IDEAS

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    1. Ahmed, Pervez & Habib, Mohamed A. & Ben-Mansour, Rached & Kirchen, Patrick & Ghoniem, Ahmed F., 2014. "CFD (computational fluid dynamics) analysis of a novel reactor design using ion transport membranes for oxy-fuel combustion," Energy, Elsevier, vol. 77(C), pages 932-944.
    2. Sukhvinder P.S. Badwal & Sarbjit Giddey & Christopher Munnings, 2013. "Hydrogen production via solid electrolytic routes," Wiley Interdisciplinary Reviews: Energy and Environment, Wiley Blackwell, vol. 2(5), pages 473-487, September.
    3. Habib, Mohamed A. & Salaudeen, Shakirudeen A. & Nemitallah, Medhat A. & Ben-Mansour, R. & Mokheimer, Esmail M.A., 2016. "Numerical investigation of syngas oxy-combustion inside a LSCF-6428 oxygen transport membrane reactor," Energy, Elsevier, vol. 96(C), pages 654-665.
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    Cited by:

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    2. Gong, Changming & Li, Zhaohui & Li, Dong & Liu, Jiajun & Si, Xiankai & Yu, Jiawei & Huang, Wei & Liu, Fenghua & Han, Yongqiang, 2018. "Numerical investigation of hydrogen addition effects on methanol-air mixtures combustion in premixed laminar flames under lean burn conditions," Renewable Energy, Elsevier, vol. 127(C), pages 56-63.
    3. Lyu, Yajin & Xing, Chang & Liu, Li & Peng, Jiangbo & Shen, Wenkai & Yu, Xin & Qiu, Penghua, 2022. "Study of turbulent flame characteristics of water vapor diluted hydrogen-air micro-mixing combustion," Renewable Energy, Elsevier, vol. 189(C), pages 1194-1205.
    4. Te Zhao & Chusheng Chen & Hong Ye, 2021. "CFD Simulation of Hydrogen Generation and Methane Combustion Inside a Water Splitting Membrane Reactor," Energies, MDPI, vol. 14(21), pages 1-17, November.
    5. Te Zhao & Chusheng Chen & Hong Ye, 2021. "CFD Simulation of Syngas Combustion in a Two-Pass Oxygen Transport Membrane Reactor for Fire Tube Boiler Application," Energies, MDPI, vol. 14(21), pages 1-15, November.

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