2022
DOI: 10.1007/s12155-022-10504-3
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Role of Primary Freeboard on Staged Combustion of Hardwood Pellets in a Fixed Bed Combustor

Abstract: In staged fixed bed biomass combustion, primary air is supplied beneath the fuel bed with secondary air then provided above in the freeboard region. For fixed bed configurations, the freeboard is further divided into a primary freeboard length (LI), which is upstream of the secondary air and a secondary freeboard length (LII), measured from the secondary air all the way to the exhaust port. Despite extensive research into fixed bed configurations, no work has been successfully completed that resolves the effec… Show more

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Cited by 6 publications
(4 citation statements)
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“…The presence of stronger recirculation zones for Q s /Q t = 0.50 case can result in improved combustion characteristics. This observation is also supported by the previous work 9 conducted on wood pellets in fixed bed combustor in which higher freeboard temperatures and lower CO emissions were observed for Q s /Q t = 0.50.
Figure 3.Axial velocity contours for secondary air injection at h/D = 0.64: (a) left Q s /Q t = 0.18, center 0.25 and right 0.50, (b) left Q s /Q t = 0.06 and right 0.12.
…”
Section: Resultssupporting
confidence: 92%
See 3 more Smart Citations
“…The presence of stronger recirculation zones for Q s /Q t = 0.50 case can result in improved combustion characteristics. This observation is also supported by the previous work 9 conducted on wood pellets in fixed bed combustor in which higher freeboard temperatures and lower CO emissions were observed for Q s /Q t = 0.50.
Figure 3.Axial velocity contours for secondary air injection at h/D = 0.64: (a) left Q s /Q t = 0.18, center 0.25 and right 0.50, (b) left Q s /Q t = 0.06 and right 0.12.
…”
Section: Resultssupporting
confidence: 92%
“…The presence of stronger recirculation zones for Q s /Q t = 0.50 case can result in improved combustion characteristics. This observation is also supported by the previous work 9 conducted on wood pellets in fixed bed combustor in which higher freeboard temperatures and lower CO emissions were observed for Q s /Q t = 0.50.…”
Section: Resultssupporting
confidence: 87%
See 2 more Smart Citations