Effects of In-bed Stoichiometric and Flue Gas Recirculation on Combustion and Environmental Performances of a Swirling Fluidized-bed Combustor

Authors

  • Porametr Arromdee
  • Kasama Sirisomboon

DOI:

https://doi.org/10.4186/ej.2021.25.2.207 Full article

Abstract

This work studied the firing of ground nut/peanut shells in a twin-cyclonic fluidized-bed combustor at the maximum combustor loading (~22.5 kg/h) in the flue gas recirculation (FGR) mode. During the experimental tests, excess air (EA) was fixed at about 60%, while the in-bed stoichiometric ratio (Sb) and FGR ranged from 1.0–1.2 and from 10–25%, respectively. The experimental results showed that nitrogen oxide (NOx) emissions significantly decreased when FGR increased; however, the opposite tendency was found for carbon monoxide (CO) emission. Meanwhile, FGR showed strong effects on both combustion and emission performances, the impacts of Sb were quite low. The FGR of ~10-18% and Sb from 1.0-1.2 appear to be optimum operating conditions for firing ground nut/peanut shells to ensure the lowering of major emissions under the limitations of Thailand’s emission standards, with high combustor efficiency at 99%.

Keywords:

combustion efficiency, NOx reduction, fluidized-bed combustion

Affiliations

  • Porametr Arromdee Silpakorn University
  • Kasama Sirisomboon Silpakorn University

Corresponding author: Kasama Sirisomboon, sirisomboon_k@su.ac.th

762 960

Author Biographies

  • Porametr Arromdee

    Laboratory of Advance Combustion Technology and Energy Systems, Department of Mechanical Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, Nakhon Pathom, Thailand, 73000

  • Kasama Sirisomboon

    Laboratory of Advance Combustion Technology and Energy Systems,
    Department of Mechanical Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, Nakhon Pathom, Thailand, 73000

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How to Cite

[1]
P. Arromdee and K. Sirisomboon, “Effects of In-bed Stoichiometric and Flue Gas Recirculation on Combustion and Environmental Performances of a Swirling Fluidized-bed Combustor”, Eng. J., vol. 25, no. 2, pp. 207–214, Feb. 2021, doi: 10.4186/ej.2021.25.2.207.

Citations

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Published

2021-02-28

Issue

Vol. 25 No. 2 (2021): Regular Issue

Section

Special Section for ICEIT 2020

License

Copyright (c) 2021 Engineering Journal

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