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Deactivation Model Study of High Temperature H 2 S Wet-Desulfurization by Using ZnO

Author

Listed:
  • Arda Hatunoglu

    (Department of Engineering Sciences, Università degli Studi Guglielmo Marconi, 00193 Rome, Italy)

  • Alessandro Dell’Era

    (Department of Basic and Applied Sciences for Engineering, Sapienza University of Rome, 00161 Rome, Italy)

  • Luca Del Zotto

    (CREAT, Centro di Ricerca su Energia, Ambiente e Territorio, eCampus University, 22060 Novedrate, Italy)

  • Andrea Di Carlo

    (Department of Industrial and Computer Engineering and Economics, University of L’Aquila, 67100 L’Aquila, Italy)

  • Erwin Ciro

    (ICMA Department, University Sapienza Rome, Via Eudossiana 18, 00184 Roma, Italy)

  • Enrico Bocci

    (Department of Engineering Sciences, Università degli Studi Guglielmo Marconi, 00193 Rome, Italy)

Abstract

High-temperature desulfurization techniques are fundamental for the development of reliable and efficient conversion systems of low-cost fuels and biomass that answer to the nowadays environmental and energy security issues. This is particularly true for biomass gasification coupled to SOFC systems where the sulfur content has to be minimized before being fed to the SOFC. Thus, commercially available zinc oxide has been studied and characterized as a desulfurizing agent in a fixed-bed reactor at high temperatures from 400 °C to 600 °C. The sorbent material was characterized by XRD, BET, SEM, and EDS analyses before and after adsorption. The sorbent’s sorption capacity has been evaluated at different temperatures, as well as the breakthrough curves. Moreover, the kinetic parameters as the initial sorption rate constant k 0 , the deactivation rate constant k d , and the activation energy have been calculated using the linearized deactivation model. The best performances have been obtained at 550 °C, obtaining a sorption capacity of 5.4 g per 100 g of sorbent and a breakthrough time of 2.7 h. These results can be used to extend ZnO desulfurization techniques to a higher temperature than the ones used today (i.e., 550 °C with respect to 400 °C).

Suggested Citation

  • Arda Hatunoglu & Alessandro Dell’Era & Luca Del Zotto & Andrea Di Carlo & Erwin Ciro & Enrico Bocci, 2021. "Deactivation Model Study of High Temperature H 2 S Wet-Desulfurization by Using ZnO," Energies, MDPI, vol. 14(23), pages 1-14, December.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:23:p:8019-:d:692574
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    References listed on IDEAS

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    1. Chen, Huili & Wang, Fen & Wang, Wei & Chen, Daifen & Li, Si-Dian & Shao, Zongping, 2016. "H2S poisoning effect and ways to improve sulfur tolerance of nickel cermet anodes operating on carbonaceous fuels," Applied Energy, Elsevier, vol. 179(C), pages 765-777.
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    Cited by:

    1. Erwin Ciro & Alessandro Dell’Era & Arda Hatunoglu & Enrico Bocci & Luca Del Zotto, 2023. "Kinetic and Thermodynamic Study of the Wet Desulfurization Reaction of ZnO Sorbents at High Temperatures," Energies, MDPI, vol. 16(2), pages 1-20, January.
    2. Fanjing Wei & Xiaoqin Guo & Weiren Bao & Liping Chang & Junjie Liao, 2022. "Metal Modified NaY Zeolite as Sorbent for the Ultra-Deep Removal of Thiophene in Simulated Coke Oven Gas," Energies, MDPI, vol. 15(7), pages 1-16, April.

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