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The Impact of Coal’s Petrographic Composition on Its Suitability for the Gasification Process: The Example of Polish Deposits

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  • Barbara Bielowicz

    (Faculty of Geology, Geophysics and Environment Protection, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland)

  • Jacek Misiak

    (Faculty of Geology, Geophysics and Environment Protection, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland)

Abstract

In this paper, we discuss the impact of the rank of coal, petrographic composition, and physico-chemical coal properties on the release and composition of syngas during coal gasification in a CO 2 atmosphere. This study used humic coals (parabituminous to anthracite) and lithotypes (bright coal and dull coal). Gasification was performed at temperatures between 600 and 1100 °C. It was found that the gas release depends on the temperature and rank of coal, and the reactivity increases with the increasing rank of coal. It was shown that the coal lithotype does not affect the gas composition or the process. Until 900 °C, the most intense processes were observed for higher rank coals. Above 1000 °C, the most reactive coals had a vitrinite reflectance of 0.5–0.6%. It was confirmed that the gasification of low-rank coal should be performed at temperatures above 1000 °C, and the reactivity of coal depends on the petrographic composition and physico-chemical features. It was shown that inertinite has a negative impact on the H 2 content; at 950 °C, the increase in H 2 depends on the rank of coal and vitrinite content. The physicochemical properties of coal rely on the content of maceral groups and the rank of coal. An improved understanding these relationships will allow the optimal selection of coal for gasification.

Suggested Citation

  • Barbara Bielowicz & Jacek Misiak, 2020. "The Impact of Coal’s Petrographic Composition on Its Suitability for the Gasification Process: The Example of Polish Deposits," Resources, MDPI, vol. 9(9), pages 1-20, September.
    • Handle: RePEc:gam:jresou:v:9:y:2020:i:9:p:111-:d:410920
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    References listed on IDEAS

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    1. Irfan, Muhammad F. & Usman, Muhammad R. & Kusakabe, K., 2011. "Coal gasification in CO2 atmosphere and its kinetics since 1948: A brief review," Energy, Elsevier, vol. 36(1), pages 12-40.
    2. Honorata Nyga-Łukaszewska & Kentaka Aruga & Katarzyna Stala-Szlugaj, 2020. "Energy Security of Poland and Coal Supply: Price Analysis," Sustainability, MDPI, vol. 12(6), pages 1-18, March.
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    Cited by:

    1. Karczewski, Mateusz & Porada, Stanisław, 2023. "Physically mixed black liquor as a catalytic additive for pressurised steam gasification of different rank bituminous coals," Energy, Elsevier, vol. 263(PB).

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