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

Authors

  • Porametr Arromdee Silpakorn University
  • Kasama Sirisomboon Silpakorn University

DOI:

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

Keywords:

combustion efficiency, NOx reduction, fluidized-bed combustion

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%.

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Author Biographies

Porametr Arromdee
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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
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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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Published In
Vol 25 No 2, Feb 28, 2021
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.
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