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Effect of Pyrolysis Reactions on Coal and Biomass Gasification Process

Author

Listed:
  • Tomasz Chmielniak

    (Department of Thermal and Fluid Flow Machines, Faculty of Energy and Fuels, AGH University of Science and Technology, 30-059 Krakow, Poland)

  • Leszek Stepien

    (Department of Fuel Technology, Faculty of Energy and Fuels, AGH University of Science and Technology, 30-059 Krakow, Poland)

  • Marek Sciazko

    (Center of Energy, AGH University of Science and Technology, 30-059 Krakow, Poland)

  • Wojciech Nowak

    (Department of Thermal and Fluid Flow Machines, Faculty of Energy and Fuels, AGH University of Science and Technology, 30-059 Krakow, Poland
    Center of Energy, AGH University of Science and Technology, 30-059 Krakow, Poland)

Abstract

Thermodynamic analysis of a gasification process was conducted assuming that it is composed of two successive stages, namely: pyrolysis reaction followed by a stage of gasification reaction. This approach allows formulation the models of selected gasification processes dominating in industrial applications namely: Shell (coal), SES (coal), and DFB (dual fluid bed, biomass) gasification. It was shown that the enthalpy of fuel formation is essential for the correctness of computed results. The specific computational formula for a wide range of fuels enthalpy of formation was developed. The following categories were evaluated in terms of energy balance: total reaction enthalpy of gasification process, enthalpy of pyrolysis reaction, enthalpy of gasification reaction, heat demand for pyrolysis reaction, and heat demand for gasification reactions. The discussion of heat demand for particular stages of gasification related to the various processes was performed concluding the importance of the pyrolysis stage.

Suggested Citation

  • Tomasz Chmielniak & Leszek Stepien & Marek Sciazko & Wojciech Nowak, 2021. "Effect of Pyrolysis Reactions on Coal and Biomass Gasification Process," Energies, MDPI, vol. 14(16), pages 1-21, August.
  • Handle: RePEc:gam:jeners:v:14:y:2021:i:16:p:5091-:d:617054
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    References listed on IDEAS

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    5. Safarian, Sahar & Unnþórsson, Rúnar & Richter, Christiaan, 2019. "A review of biomass gasification modelling," Renewable and Sustainable Energy Reviews, Elsevier, vol. 110(C), pages 378-391.
    6. Upadhyay, Darshit S. & Sakhiya, Anil Kumar & Panchal, Krunal & Patel, Amar H. & Patel, Rajesh N., 2019. "Effect of equivalence ratio on the performance of the downdraft gasifier – An experimental and modelling approach," Energy, Elsevier, vol. 168(C), pages 833-846.
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    Cited by:

    1. Sergey M. Frolov, 2022. "Organic Waste Gasification by Ultra-Superheated Steam," Energies, MDPI, vol. 16(1), pages 1-11, December.
    2. Gabriel Talero & Yasuki Kansha, 2022. "Simulation of the Steam Gasification of Japanese Waste Wood in an Indirectly Heated Downdraft Reactor Using PRO/II™: Numerical Comparison of Stoichiometric and Kinetic Models," Energies, MDPI, vol. 15(12), pages 1-19, June.

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