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Numerical investigation on the effect of electron injected air for thermal decomposition of solid waste

Author

Listed:
  • Ismail, Tamer M.
  • Kobayashi, Yasunori
  • Yoshikawa, Kunio
  • Lu, Ding
  • Kobori, Takahiro
  • Araki, Kuniomi
  • Kanazawa, Kiryu
  • Takahashi, Fumitake
  • Abd El-Salam, M.

Abstract

Many organizations in the world are interested in waste management problems and their potential solutions. In order to solve these problems, a Japanese venture company has developed an innovative thermal decomposer for organic wastes called ERCM (Earth-Resource-Ceramic-Machine). The ERCM reactor employs electron injected air to promote the thermal decomposition reaction, while the effect of electron injection into air has not yet been clarified. An experimental work was performed using a fixed bed reactor to explore the effects of different parameters of electron injection into air, the reaction temperature and different feedstock on the syngas generation. The main purpose of this study is to clarify the phenomena occurring in the ERCM reactor where a direct current electric field is produced in the flame reaction zone to enhance the thermal decomposition of wastes. In this regard, a mathematical model for simulating the thermal decomposition of solid waste in the presence of an electric field have been developed. The equations of aero-thermochemistry are coupled to the balance equations for densities of charged species, and the Poisson equation for the electrical potential is solved. The model was validated by the experimental data and showed a good agreement. The results showed that the electric field significantly improves the stabilization of the flame. From the release behavior of CO and CO2, it is noted that the electron injection would affect the char combustion process significantly. Finally the effect of the flame reaction zone generated by the field induced ion wind on the thermal decomposition was investigated.

Suggested Citation

  • Ismail, Tamer M. & Kobayashi, Yasunori & Yoshikawa, Kunio & Lu, Ding & Kobori, Takahiro & Araki, Kuniomi & Kanazawa, Kiryu & Takahashi, Fumitake & Abd El-Salam, M., 2020. "Numerical investigation on the effect of electron injected air for thermal decomposition of solid waste," Applied Energy, Elsevier, vol. 269(C).
    • Handle: RePEc:eee:appene:v:269:y:2020:i:c:s0306261920306693
    DOI: 10.1016/j.apenergy.2020.115157
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    References listed on IDEAS

    as
    1. Lu, Ding & Yoshikawa, Kunio & Ismail, Tamer M. & Abd El-Salam, M., 2018. "Assessment of the carbonized woody briquette gasification in an updraft fixed bed gasifier using the Euler-Euler model," Applied Energy, Elsevier, vol. 220(C), pages 70-86.
    2. Ismail, Tamer M. & Monteiro, Eliseu & Ramos, Ana & El-Salam, M. Abd & Rouboa, Abel, 2019. "An Eulerian model for forest residues gasification in a plasma gasifier," Energy, Elsevier, vol. 182(C), pages 1069-1083.
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    Cited by:

    1. Ismail, Tamer M. & Yoshikawa, Kunio & Kobori, Takahiro & Kobayashi, Yoshinori & Kanazawa, Kiryu & Takahashi, Fumitake & Abd El-Salam, M., 2022. "Effect of electron injected air on the gasification performance of biomass," Applied Energy, Elsevier, vol. 311(C).
    2. Kobayashi, Yasunori & Ismail, Tamer M. & Kobori, Takahiro & Ding, Lu & Yoshikawa, Kunio & Araki, Kuniomi & Kanazawa, Kiryu & Takahashi, Fumitake, 2021. "Experimental investigation on the effect of electron injection into air for thermal decomposition of solid waste," Applied Energy, Elsevier, vol. 295(C).
    3. Kobori, Takahiro & Yoshikawa, Kunio & Ismail, Tamer M. & Yasser, T.M. & García, Abraham Castro & Kanazawa, Kiryu & Takahashi, Fumitake, 2022. "Effect of electron injection on oxidative pyrolysis of cellulose and polypropylene," Applied Energy, Elsevier, vol. 326(C).

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