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Thermodynamic analyses for recovering residual heat of high-temperature basic oxygen gas (BOG) by the methane reforming with carbon dioxide reaction

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  • Chen, Lingen
  • Shen, Xun
  • Xia, Shaojun
  • Sun, Fengrui

Abstract

For the recovery and utilization of high-temperature basic oxygen gas (BOG) generated in the basic oxygen furnace (BOF) process within iron and steel production, a thermochemical recovering method of tubular plug flow reaction is proposed. Accounting for efficient utilization of residual heat and capture of carbon dioxide, methane reforming with carbon dioxide reaction is introduced. With a linear-temperature heat source, the reacting rate, temperature and pressure distributions of mixed gas along the tubular reactor are obtained based on a thermodynamic model. The influences of three inlet parameters of temperature, total pressure, molar flow rate of methane, and a structure parameter of catalyst porosity are analyzed. The results show that with the given conditions, the reacting rate firstly increases to the maximum and then decreases gradually nearly to zero, and the reforming reaction mainly occurs at the first half of the tube. The temperature increases with the flow along the tube, but the temperature gradient decreases on the contrary. The total pressure decreases and the pressure gradient gradually increases to a certain value at the end. Both of the inlet temperature and molar flow rate of methane have big influences on the reacting rate.

Suggested Citation

  • Chen, Lingen & Shen, Xun & Xia, Shaojun & Sun, Fengrui, 2017. "Thermodynamic analyses for recovering residual heat of high-temperature basic oxygen gas (BOG) by the methane reforming with carbon dioxide reaction," Energy, Elsevier, vol. 118(C), pages 906-913.
    • Handle: RePEc:eee:energy:v:118:y:2017:i:c:p:906-913
    DOI: 10.1016/j.energy.2016.10.105
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    References listed on IDEAS

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    Cited by:

    1. Liu, Changxin & Xie, Zhihui & Sun, Fengrui & Chen, Lingen, 2017. "Exergy analysis and optimization of coking process," Energy, Elsevier, vol. 139(C), pages 694-705.
    2. Duan, Wenjun & Yu, Qingbo & Wang, Zhimei & Liu, Junxiang & Qin, Qin, 2018. "Life cycle and economic assessment of multi-stage blast furnace slag waste heat recovery system," Energy, Elsevier, vol. 142(C), pages 486-495.
    3. Chen, Xue & Wang, Fuqiang & Yan, Xuewei & Han, Yafen & Cheng, Ziming & Jie, Zhu, 2018. "Thermochemical performance of solar driven CO2 reforming of methane in volumetric reactor with gradual foam structure," Energy, Elsevier, vol. 151(C), pages 545-555.
    4. Siang, T.J. & Jalil, A.A. & Abdulrasheed, A.A. & Hambali, H.U. & Nabgan, Walid, 2020. "Thermodynamic equilibrium study of altering methane partial oxidation for Fischer–Tropsch synfuel production," Energy, Elsevier, vol. 198(C).
    5. Sun, Yongqi & Seetharaman, Seshadri & Zhang, Zuotai, 2018. "Integrating biomass pyrolysis with waste heat recovery from hot slags via extending the C-loops: Product yields and roles of slags," Energy, Elsevier, vol. 149(C), pages 792-803.
    6. Chen, Lingen & Zhang, Lei & Xia, Shaojun & Sun, Fengrui, 2018. "Entropy generation minimization for CO2 hydrogenation to light olefins," Energy, Elsevier, vol. 147(C), pages 187-196.

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