SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2021, Vol. 38 ›› Issue (10): 123-131.DOI: 10.1016/j.cjche.2021.02.012

• Catalysis, Kinetics and Reaction Engineering • Previous Articles     Next Articles

Syngas production from chemical looping reforming of ethanol over iron-based oxygen carriers: Theoretical analysis and experimental investigation

Atif Abdalazeez1,2, Wenju Wang1, Siddig Abuelgasim1,2   

  1. 1. School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
    2. Department of Mechanical Engineering, University of Kassala, Kassala, Sudan
  • Received:2020-04-07 Revised:2020-12-20 Online:2021-12-02 Published:2021-10-28
  • Contact: Wenju Wang
  • Supported by:
    This work is supported financially by the National Natural Science Foundation of China (Grant No. 21676148).

Syngas production from chemical looping reforming of ethanol over iron-based oxygen carriers: Theoretical analysis and experimental investigation

Atif Abdalazeez1,2, Wenju Wang1, Siddig Abuelgasim1,2   

  1. 1. School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
    2. Department of Mechanical Engineering, University of Kassala, Kassala, Sudan
  • 通讯作者: Wenju Wang
  • 基金资助:
    This work is supported financially by the National Natural Science Foundation of China (Grant No. 21676148).

Abstract: Chemical looping reforming (CLR) is a recent trend for syngas production, which has several merits compared to the conventional manner. One of the most important issues for CLR is to find low-cost material as oxygen carriers, so iron is a promising candidate. This paper contributes to testing the thermodynamic ability of iron-based oxygen carrier for chemical looping reforming of ethanol (CLRE). Iron thermodynamically investigated in temperature 100-1300 ℃ and excess oxygen number (Φ) 0-4. It was found that the temperature and Φ have an apparent effect on the gaseous composition produced from the process. Increases in temperature within the range of 100-1300 ℃ enhanced syngas generated and reduced coke formation and CH4. Whereas, increased Φ, particularly at higher temperatures, had also enhanced syngas production as well as reduced coke formation. However, increasing Φ for values beyond one had decreased syngas and not significantly reduced coke deposition. Moreover, an experimental investigation was carried out in a fixed bed reactor for more in-depth verification of iron ability as an oxygen carrier through using magnetite ore (mainly Fe3O4). It found that the effect of temperature on syngas production was consistent with that calculated thermodynamically, as syngas increased with raising the temperature through the CLRE.

Key words: Syngas, Chemical looping reforming, Iron oxygen carrier, Ethanol, Coke formation, Thermodynamic analysis

摘要: Chemical looping reforming (CLR) is a recent trend for syngas production, which has several merits compared to the conventional manner. One of the most important issues for CLR is to find low-cost material as oxygen carriers, so iron is a promising candidate. This paper contributes to testing the thermodynamic ability of iron-based oxygen carrier for chemical looping reforming of ethanol (CLRE). Iron thermodynamically investigated in temperature 100-1300 ℃ and excess oxygen number (Φ) 0-4. It was found that the temperature and Φ have an apparent effect on the gaseous composition produced from the process. Increases in temperature within the range of 100-1300 ℃ enhanced syngas generated and reduced coke formation and CH4. Whereas, increased Φ, particularly at higher temperatures, had also enhanced syngas production as well as reduced coke formation. However, increasing Φ for values beyond one had decreased syngas and not significantly reduced coke deposition. Moreover, an experimental investigation was carried out in a fixed bed reactor for more in-depth verification of iron ability as an oxygen carrier through using magnetite ore (mainly Fe3O4). It found that the effect of temperature on syngas production was consistent with that calculated thermodynamically, as syngas increased with raising the temperature through the CLRE.

关键词: Syngas, Chemical looping reforming, Iron oxygen carrier, Ethanol, Coke formation, Thermodynamic analysis