Experimental study on a bench-scale, batch-type fluidized-bed combustor for energy production from waste-derived fuels

Shafey, Hamdy M.; Taha, Ibrahim S.

doi:10.1016/0360-5442(92)90108-c

Cited by 7 publications

(4 citation statements)

References 2 publications

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“…Estimated average values of the bed-to-cooling coil heat transfer coefficient h b as much as 350 W/m 2 .K were obtained at average bed temperatures up to 500 ºC. This result is in good agreement with the previously reported findings [6,7]. Moreover, the estimated h b values were found to be much larger (nearly 6 times) as compared with the estimated average h g value of 65 W/m 2 .K.…”

Section: Results For the Hot Flow And Combustion Testssupporting

confidence: 90%

Characterization of an Experimental Facility for Bubbling Fluidized Bed Combustor

Shafey

Al-Nahari

El-Zohri

et al. 2018

JES. Journal of Engineering Sciences

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Fluidized bed technology offers an attractive way for energy production with clean environment by the combustion of even low-grade waste derived fuels (WDF). This paper reports experimental results concerning the characterization of a small-scale bubbling atmospheric fluidized bed combustor with WDF batch feeding. The combustor having 0.215 m inner diameter and 1.88 m height is equipped with a packed-bed sandwich-type fluidizing air distributor. The experimental fluidized bed combustor (EFBC) is provided with facility items necessary for the operation, control, and measurements. Results of the measured fluidized bed pressure drop and temperature were investigated for cold flow, hot flow, and combustion tests during the characterization procedure. The results of these tests clearly indicated the good fluidization characteristics inherent to wellcontrolled operation of the EFBC facility. The characterization tests also indicated the reproducible and safe operation characteristics of the EFBC facility without appreciable leakage of fluidizing air and exhaust gases. Moreover, the obtained uniformity of the fluidized bed temperature together with the high estimated values of bed-to-immersed cooling coil heat transfer coefficient, added more evidence on the good combustion characteristics of the investigated EFBC facility.

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Section: Results For the Hot Flow And Combustion Testssupporting

confidence: 90%

Characterization of an Experimental Facility for Bubbling Fluidized Bed Combustor

Shafey

Al-Nahari

El-Zohri

et al. 2018

JES. Journal of Engineering Sciences

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“…10 This gives confidence for the present results to be applied to the design and operation of commercial large-scale reactors. In all combustion tests, the electric heater used to preheat fluidizing air can be replaced by a heat exchanger using the hot gases leaving the FBC.…”

Section: Combustion Of Tars and Cosupporting

confidence: 87%

Dry cleaning aluminum cell gases from Söderberg cells

Doheim

Shafey

Abdellatif

et al. 2000

JOM

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“…Fluidized bed combustion has many advantages over other combustion systems, i.e., good gas–solid mixing, high heat and mass transfer efficiencies, and low pollutant emissions, etc. − Batch feeding has been widely used in fluidized bed combustor. , However, there are few studies about the pollutant emissions of batch fluidized bed combustion.…”

Section: Introductionmentioning

confidence: 99%

“…7−9 Batch feeding has been widely used in fluidized bed combustor. 10,11 However, there are few studies about the pollutant emissions of batch fluidized bed combustion.…”

Section: ■ Introductionmentioning

confidence: 99%

Characteristics of Fluidized Bed Combustion with Intermittent Feeding Using Woodblocks and Rubber. 2. Pollutant Emissions

et al. 2012

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Woodblocks and rubber balls are used as the fuels to simulate the combustion behavior and pollutant emission characteristics of municipal solid wastes and hazardous wastes in a fluidized bed combustor with an intermittent feeding system. Silica sand is used as the bed material with a mean density of 2500 kg/m 3 and a particle size range of 400500 μm. Effects of operating parameters, i.e., in-bed stoichiometric oxygen ratio (ISOR), static bed height, and feeding interval on the CO and NOx emission concentrations are investigated. Different fuels show different pollutant emission characteristics in this study. For rubber ball combustion, the mean CO concentration in the flue gas increases with the ISOR and feeding interval and decreases with higher static bed height. There is a reverse dependency between the CO and NOx concentrations at the furnace exit. For woodblock combustion, the mean CO concentration decreases slightly with higher ISOR and static bed height and increases slightly with higher feeding interval. The dependency between CO and NOx concentrations is unobvious.

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Experimental study on a bench-scale, batch-type fluidized-bed combustor for energy production from waste-derived fuels

Cited by 7 publications

References 2 publications

Characterization of an Experimental Facility for Bubbling Fluidized Bed Combustor

Characterization of an Experimental Facility for Bubbling Fluidized Bed Combustor

Dry cleaning aluminum cell gases from Söderberg cells

Characteristics of Fluidized Bed Combustion with Intermittent Feeding Using Woodblocks and Rubber. 2. Pollutant Emissions

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