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Numerical investigation of syngas oxy-combustion inside a LSCF-6428 oxygen transport membrane reactor

Author

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  • Habib, Mohamed A.
  • Salaudeen, Shakirudeen A.
  • Nemitallah, Medhat A.
  • Ben-Mansour, R.
  • Mokheimer, Esmail M.A.

Abstract

The present work provides an investigation of the oxy-fuel combustion of syngas (mixture of CO and H2) inside an OTR (oxygen transport reactor) of tubular shape and surrounded by air in an annulus. The syngas is generated from solar thermal reforming of methane. CFD (Computational fluid dynamics) calculations were performed using FLUENT 14.0 commercial code, where a series of UDFs (user defined functions) that enable the transfer of oxygen across the membrane were written in VC++, then compiled and hooked to FLUENT software. The models of oxygen permeation and reaction kinetics are validated against the available experimental data under similar oxy-combustion conditions. Simulations were performed considering non-reactive and reactive flow conditions. The results showed that the reactive flow results in increase in oxygen permeation flux of about four times the case of non-reactive flow. Oxy-combustion characteristics of synthetic gas in a medium of recirculated CO2 are investigated. Considering reactive flow conditions, the effects of inlet temperature, CO2 circulation, fuel composition and sweep gas flux on oxygen permeation and combustion temperature are studied. It was found that increase in inlet temperature, inlet fuel concentration, inlet hydrogen concentration and sweep flow rate result in high combustion temperature and improved oxygen permeation flux.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:energy:v:96:y:2016:i:c:p:654-665
    DOI: 10.1016/j.energy.2015.12.043
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    References listed on IDEAS

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    1. Mancini, N.D. & Mitsos, A., 2011. "Ion transport membrane reactors for oxy-combustion–Part II: Analysis and comparison of alternatives," Energy, Elsevier, vol. 36(8), pages 4721-4739.
    2. Mancini, N.D. & Mitsos, A., 2011. "Ion transport membrane reactors for oxy-combustion – Part I: intermediate-fidelity modeling," Energy, Elsevier, vol. 36(8), pages 4701-4720.
    3. 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.
    4. Ben Mansour, R. & Nemitallah, M.A. & Habib, M.A., 2013. "Numerical investigation of oxygen permeation and methane oxy-combustion in a stagnation flow ion transport membrane reactor," Energy, Elsevier, vol. 54(C), pages 322-332.
    5. Habib, Mohamed A. & Nemitallah, Medhat A., 2015. "Design of an ion transport membrane reactor for application in fire tube boilers," Energy, Elsevier, vol. 81(C), pages 787-801.
    6. Kodama, T. & Shimizu, T. & Satoh, T. & Shimizu, K.-I., 2003. "Stepwise production of CO-rich syngas and hydrogen via methane reforming by a WO3-redox catalyst," Energy, Elsevier, vol. 28(11), pages 1055-1068.
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    Cited by:

    1. Rashwan, Sherif S. & Ibrahim, Abdelmaged H. & Abou-Arab, Tharwat W. & Nemitallah, Medhat A. & Habib, Mohamed A., 2017. "Experimental study of atmospheric partially premixed oxy-combustion flames anchored over a perforated plate burner," Energy, Elsevier, vol. 122(C), pages 159-167.
    2. Ilbas, Mustafa & Karyeyen, Serhat, 2017. "Turbulent diffusion flames of a low-calorific value syngas under varying turbulator angles," Energy, Elsevier, vol. 138(C), pages 383-393.
    3. 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.
    4. 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.
    5. Habib, Mohamed A. & Rashwan, Sherif S. & Nemitallah, Medhat A. & Abdelhafez, Ahmed, 2017. "Stability maps of non-premixed methane flames in different oxidizing environments of a gas turbine model combustor," Applied Energy, Elsevier, vol. 189(C), pages 177-186.
    6. Mansir, Ibrahim B. & Nemitallah, Medhat A. & Habib, Mohamed A. & Khalifa, Atia E., 2018. "Experimental and numerical investigation of flow field and oxy-methane combustion characteristics in a low-power porous-plate reactor," Energy, Elsevier, vol. 160(C), pages 783-795.
    7. 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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