Coal Char Steam Gasification of Three Different Hungarian Coal Types


  • Duc Thuan Mai University of Miskolc, Institute of Energy, Ceramics and Polymer Technology
  • András Arnold Kállay University of Miskolc, Institute of Energy, Ceramics and Polymer Technology



thermochemical processes, gasification process, coal gasification, synthesis gas


In this study, there were two brown coal sample and a black coal sample gasified in a down draft fixed bed reactor at 800 and 900 °C, within 10 g/min of steam flow rate in all experiments. The aim of this research is the investigation of gasification process using Hungarian brown coal char and back coal char samples from pyrolysis process in the distribution of dry gas yields, as well as the synthesis gas composition. Based on the gasification experiments, the brown coal samples showed a potential utilisation for the gasification process. In the case of brown coal samples, the gasification time was shorter at the higher gasification temperature. Using steam as reactant in the gasification process generated a significant quantity of gas with a high hydrogen concentration, which may be suitable to produce secondary raw materials, as methanol.


A. Midilli, H. Kucuk, M. E. Topal, U. Akbulut, and I. Dincer: A comprehensive review on hydrogen production from coal gasification: Challenges and Opportunities. Int. J. Hydrogen Energy, Vol. 46, No. 50, pp. 25385–25412, 2021.

E. Faki, Ş. T. Üzden, A. Seçer, and A. Hasanoğlu: Hydrogen production from low temperature supercritical water Co-Gasification of low rank lignites with biomass. Int. J. Hydrogen Energy, Vol. 47, No. 12, pp. 7682–7692, 2022.

B. Wang et al.: Synergistic effect on the co-gasification of petroleum coke and carbonbased feedstocks: A state-of-the-art review. J. Energy Inst., Vol. 102, pp. 1–13, 2022.

S. De, A. K. Agarwal, V. S. Moholkar, and B. Thallada: Coal and Biomass Gasification. No. January, Singapore: Springer Singapore, 2018.

H. Yang and H. Chen: Biomass gasification for synthetic liquid fuel production. Woodhead Publishing Limited, 2015.

A. Pettinau, Z. Dobó, Z. Köntös, and A. Zsemberi: Experimental characterization of a high sulfur Hungarian brown coal for its potential industrial applications. Fuel Process. Technol., Vol. 122, pp. 1–11, 2014.

L. Bokányi and Á. Pintér-Móricz: Potential methanol-ethanol synthesis from Hungarian sub-bituminous coal via plasma gasification and Fischer-Tropsch synthesis. Int. J. Oil, Gas Coal Technol., Vol. 18, pp. 55–73, 2018.

S. Luo, B. Xiao, Z. Hu, S. Liu, X. Guo, and M. He: Hydrogen-rich gas from catalytic steam gasification of biomass in a fixed bed reactor: Influence of temperature and steam on gasification performance. Int. J. Hydrogen Energy, Vol. 34, No. 5, pp. 2191–2194, 2009,

L. Peng, Y. Wang, Z. Lei, and G. Cheng: Co-gasification of wet sewage sludge and forestry waste in situ steam agent. Bioresour. Technol., Vol. 114, pp. 698–702, 2012.

A. Tavasoli, M. G. Ahangari, C. Soni, and A. K. Dalai: Production of hydrogen and syngas via gasification of the corn and wheat dry distiller grains (DDGS) in a fixedbed micro reactor. Fuel Process. Technol., Vol. 90, No. 4, pp. 472–482, 2009.

Y. Xiao, S. Xu, Y. Song, C. Wang, and S. Ouyang: Gasification of low-rank coal for hydrogen-rich gas production in a dual loopgasification system. Fuel Process. Technol., Vol. 171, pp. 110–116, 2018,

Z. H. Chen et al.: Methane-rich syngas production in an integrated fluidized bed by coupling pyrolysis and gasification of low-rank coal. Fuel Process. Technol., Vol. 140, pp. 88–95, 2015,

D. Supramono, D. Tristantini, A. Rahayu, R. K. Suwignjo, and D. H. Chendra: Syngas Production from Lignite Coal Using K2CO3 Catalytic Steam Gasification with Controlled Heating Rate in Pyrolysis Step. Procedia Chem., Vol. 9, pp. 202–209, 2014.

X. Yuan, H. Namkung, T. J. Kang, and H.-T. Kim: K2CO3‐Catalyzed Steam Gasification of Indonesian Low‐Rank Coal for H2‐Rich Gas Production in a Fixed Bed Reactor. Energy Technol., Vol. 3, pp. 527–534, 2015.

Y. Niu, F. Han, Y. Chen, Y. Lyu, and L. Wang: Experimental study on steam gasification of pine particles for hydrogen-rich gas. J. Energy Inst., Vol. 90, No. 5, pp. 715–724, 2017,

Q. M. K. Waheed, C. Wu, and P. T. Williams: Hydrogen production from high temperature steam catalytic gasification of bio-char. J. Energy Inst., Vol. 89, No. 2, pp. 222–230, 2016,

W. Li, Q. Li, R. Chen, Y. Wu, and Y. Zhang: Investigation of hydrogen production using wood pellets gasification with steam at high temperature over 800 °C to 1435 °C. Int. J. Hydrogen Energy, Vol. 39, No. 11, pp. 5580–5588, 2014.

S. Chang, Z. Zhang, L. Cao, L. Ma, S. You, and W. Li: Co-gasification of digestate and lignite in a downdraft fixed bed gasifier: Effect of temperature. Energy Convers. Manag., Vol. 213, p. 112798, Jun. 2020.

Z. Chen et al.: High quality syngas production from catalytic coal gasification using disposable Ca(OH) 2 catalyst. Chem. Eng. J., Vol. 316, pp. 842–849, May 2017.




How to Cite

Mai, D. T., & Kállay, A. A. (2023). Coal Char Steam Gasification of Three Different Hungarian Coal Types. Hungarian Materials and Chemical Sciences and Engineering, 47(1), 5–15.