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Characteristics of Miscanthus Fuel by Wet Torrefaction on Fuel Upgrading and Gas Emission Behavior

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  • Jae-Hyun Park

    (Division of Energy Systems Research, Graduate School, Ajou University, Wonchon-dong, Yeongtong-gu, Suwon 443-749, Korea)

  • Young-Chan Choi

    (Korea Institute of Energy Research (KIER), 152, Gajeong-ro, Yuseong-gu, Daejeon 34129, Korea)

  • Young-Joo Lee

    (Korea Institute of Energy Research (KIER), 152, Gajeong-ro, Yuseong-gu, Daejeon 34129, Korea)

  • Hyung-Taek Kim

    (Division of Energy Systems Research, Graduate School, Ajou University, Wonchon-dong, Yeongtong-gu, Suwon 443-749, Korea)

Abstract

Biomass is a solid fuel that can be used instead of coal to address the issue of greenhouse gases. Currently, biomass is used directly in combustion or via co-combustion in coal-fired power plants. However, its use is limited due to calorific value and ash problems. In this study, wet torrefaction (WT) was carried out at various temperatures (160 °C, 180 °C, and 200 °C) and the properties of the product were evaluated. In comparison to dry torrefaction, the ash contained in biomass was extracted by an acidic solution (i.e., acetic acid) from the overreaction of the biomass. From examining the ash content of the treated WT, it was confirmed that K 2 O of basic ash was mainly extracted. In particular, in the case of K 2 O, since the main cause of combustion problems are issues such as fouling and slagging, the removed WT can be stably combusted in the boiler. Finally, the combustion and emission behaviors were evaluated by TGA-DTG and TGA-FTIR. As the fuel-N was decreased in the WT proess, the NOx in the emission gas after combustion was lower than that of raw miscanthus, and SO 2 showed a similar value. As a result, it was confirmed that the WT sample is an advanced fuel in terms of fuel upgrading, alkali minerals, and NOx emission compared to raw miscanthus.

Suggested Citation

  • Jae-Hyun Park & Young-Chan Choi & Young-Joo Lee & Hyung-Taek Kim, 2020. "Characteristics of Miscanthus Fuel by Wet Torrefaction on Fuel Upgrading and Gas Emission Behavior," Energies, MDPI, vol. 13(10), pages 1-10, May.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:10:p:2669-:d:362867
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    References listed on IDEAS

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    1. Antonios Nazos & Dorothea Politi & Georgios Giakoumakis & Dimitrios Sidiras, 2022. "Simulation and Optimization of Lignocellulosic Biomass Wet- and Dry-Torrefaction Process for Energy, Fuels and Materials Production: A Review," Energies, MDPI, vol. 15(23), pages 1-35, November.
    2. Rafail Isemin & Fouzi Tabet & Artemy Nebyvaev & Vadim Kokh-Tatarenko & Sergey Kuzmin & Oleg Milovanov & Dmitry Klimov & Alexander Mikhalev & Semen Dobkin & Yuri Zhulaev, 2022. "Prediction of the Behavior of Sunflower Husk Ash after Its Processing by Various Torrefaction Methods," Energies, MDPI, vol. 15(20), pages 1-14, October.
    3. Maja Ivanovski & Aleksandra Petrovič & Darko Goričanec & Danijela Urbancl & Marjana Simonič, 2023. "Exploring the Properties of the Torrefaction Process and Its Prospective in Treating Lignocellulosic Material," Energies, MDPI, vol. 16(18), pages 1-20, September.

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