Fluidized Coal Combustion: The Effect of Sorbent and Coal Feed Particle Size Upon the Combustion Efficiency and NOx Emission

Béer, J.M.; Sarofim, Adel F.; Sharma, Prashant; Chaung, T.Z.; Sandhu, Sarbjot Singh

doi:10.1007/978-1-4684-1045-7_15

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“…Several models have been proposed for the fluidized bed freeboard, reaction (Miyauchi and Furusaki, 1974; Ford et al, 1977; Yates and Rowe, 1977; deLasa and Grace, 1979; Beer et al, 1980; Rajan and Wen, 1980). However, those models have been either based on too simplified solid entrainment phe-nomena or require additional experimental measurements to determine the parameters.…”

Section: (41)mentioning

confidence: 99%

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Model of solid gas reaction phenomena in the fluidized bed freeboard

Chen

Wen

1982

AIChE Journal

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periods N. Thus, the net transfer decreases for both a decrease in N and an increase in amplitude b.Our results show net diffusive transfer is somewhat decreased (proportional to €2) by corrugations if the perimeter length is fixed. However, from Figure 3 we see that corrugations may also cause LITERATURE CITED Crank, J., The Mathematics of Dijjusim, Clarendon Press, Oxford Goldstein, S., Modern Deoelopments an Fluid Dynamics, 1, Clarendon Morse, P. M., and H. is presented to describe the chemical reaction and hydrodynamics occurring in the freeboard of a fluidized bed. A comparison of experimental data on the amount of particles elutriated and the concentration profiles of SO, and NO, obtained from the freeboard of fluidized bed coal combustion (FBC) by the Babcock & Wilcox Company with the calculation based on the proposed model to include the effect of interaction among the entrained particles is desirable. More experimental data with chemical reactions in the freeboard are needed to validate the model for a p plications to fluidized bed catalytic reactors. SCOPEWhen bubbles burst at the fluidized bed surface, particles are entrained in the freeboard region. The entrained particles with a terminal velocity greater than the actual gas velocity will reach a certain height within the freeboard before they fall back into the bed. However, those particles with a terminal velocity smaller than the actual gas velocity will be elutriated and carried out of the bed. Because of good solid-gas contact in the C Y Wen IS deceased

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Section: (41)mentioning

confidence: 99%

“…Most of the investigators (Miyauchi and Furusaki, 1974;Yates and Rowe, 1977;de Lasa and Grace, 1979;Beer et al, 1980) used either a plug flow or complete-mixing flow model. Rajan and Wen (1980), on the other hand, assumed the equal-sized compartment-in-series model or the axial dispersion model for the gas hydrodynamics in the freeboard.…”

Section: Introductionmentioning

confidence: 99%

Model of solid gas reaction phenomena in the fluidized bed freeboard

Chen

Wen

1982

AIChE Journal

View full text Add to dashboard Cite

show abstract

Fluidized Coal Combustion: The Effect of Sorbent and Coal Feed Particle Size Upon the Combustion Efficiency and NOx Emission

Cited by 1 publication

References 0 publications

Model of solid gas reaction phenomena in the fluidized bed freeboard

Model of solid gas reaction phenomena in the fluidized bed freeboard

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