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Warm Plasma Application in Tar Conversion and Syngas Valorization: The Fate of Hydrogen Sulfide

Author

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  • Mateusz Wnukowski

    (Faculty of Mechanical and Power Engineering, Wroclaw University of Science and Technology, 27 Wybrzeze St. Wyspianskiego, 50-370 Wroclaw, Poland)

  • Wojciech Moroń

    (Faculty of Mechanical and Power Engineering, Wroclaw University of Science and Technology, 27 Wybrzeze St. Wyspianskiego, 50-370 Wroclaw, Poland)

Abstract

Warm plasma techniques are considered a promising method of tar removal in biomass-derived syngas. The fate of another problematic syngas impurity—hydrogen sulfide—is studied in this work. It is revealed that processing simulated syngas with a microwave plasma results in hydrogen sulfide conversion. For different gas flow rates (20–40 NLPM) and hydrogen sulfide concentrations ranging from 250 ppm to 750 ppm, the conversion rate varies from ca. 26% to 45%. The main sulfur-containing products are carbon disulfide (ca. 30% of total sulfur) and carbonyl sulfide (ca. 8% of total sulfur). Besides them, significantly smaller quantities of sulfates and benzothiophene are also detected. The main components of syngas have a tremendous impact on the fate of hydrogen sulfide. While the presence of carbon monoxide, methane, carbon dioxide, and tar surrogate (toluene) leads to the formation of carbonyl sulfide, carbon disulfide, sulfur dioxide, and benzothiophene, respectively, the abundance of hydrogen results in the recreation of hydrogen sulfide. Consequently, the presence of hydrogen in the simulated syngas is the main factor that determines the low conversion rate of hydrogen sulfide. Conversion of hydrogen sulfide into various sulfur compounds might be problematic in the context of syngas purification and the application of the right technique for sulfur removal.

Suggested Citation

  • Mateusz Wnukowski & Wojciech Moroń, 2021. "Warm Plasma Application in Tar Conversion and Syngas Valorization: The Fate of Hydrogen Sulfide," Energies, MDPI, vol. 14(21), pages 1-16, November.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:21:p:7383-:d:673061
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    References listed on IDEAS

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    1. Antonio Molino & Vincenzo Larocca & Simeone Chianese & Dino Musmarra, 2018. "Biofuels Production by Biomass Gasification: A Review," Energies, MDPI, vol. 11(4), pages 1-31, March.
    2. Nadia Cerone & Francesco Zimbardi, 2021. "Effects of Oxygen and Steam Equivalence Ratios on Updraft Gasification of Biomass," Energies, MDPI, vol. 14(9), pages 1-18, May.
    3. Prashanth Reddy Buchireddy & Devin Peck & Mark Zappi & Ray Mark Bricka, 2021. "Catalytic Hot Gas Cleanup of Biomass Gasification Producer Gas via Steam Reforming Using Nickel-Supported Clay Minerals," Energies, MDPI, vol. 14(7), pages 1-21, March.
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    Cited by:

    1. Muhammad Yousaf Arshad & Muhammad Azam Saeed & Muhammad Wasim Tahir & Ahsan Raza & Anam Suhail Ahmad & Fasiha Tahir & Bartłomiej Borkowski & Tadeusz Mączka & Lukasz Niedzwiecki, 2023. "Role of Experimental, Modeling, and Simulation Studies of Plasma in Sustainable Green Energy," Sustainability, MDPI, vol. 15(19), pages 1-35, September.
    2. Evgeniy Yurevich Titov & Ivan Vasilevich Bodrikov & Anton Igorevich Serov & Yuriy Alekseevich Kurskii & Dmitry Yurievich Titov & Evgenia Ruslanovna Bodrikova, 2022. "Liquid-Phase Non-Thermal Plasma Discharge for Fuel Oil Processing," Energies, MDPI, vol. 15(9), pages 1-9, May.
    3. Muhammad Yousaf Arshad & Muhammad Azam Saeed & Muhammad Wasim Tahir & Halina Pawlak-Kruczek & Anam Suhail Ahmad & Lukasz Niedzwiecki, 2023. "Advancing Sustainable Decomposition of Biomass Tar Model Compound: Machine Learning, Kinetic Modeling, and Experimental Investigation in a Non-Thermal Plasma Dielectric Barrier Discharge Reactor," Energies, MDPI, vol. 16(15), pages 1-26, August.

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