Experimental study on Egyptian biomass combustion in circulating fluidized bed

Youssef, Mahmoud A.M.; Wahid, Seddik S.; Mohamed, Mamdouh A.; Askalany, Ahmed A.

doi:10.1016/j.apenergy.2009.04.021

Cited by 44 publications

(18 citation statements)

References 3 publications

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“…Such research has shown that the pyrolysis behaviors of various biomasses are quite different, which can be mainly attributed to their chemical components. Particularly, in previous studies, many experimental investigations have been conducted to obtain the thermal efficiency of a combustion system using CC residues (Lin et al 1995;Youssef et al 2009). The research conducted by Tippayawong et al (2006) further established that CC was suitable for burning as an alternative fuel instead of serving as a fertilizer by using the heat from CC combustion in a combustor for tobacco drying.…”

Section: Introductionmentioning

confidence: 99%

Research on the Thermo-Physical Properties of Corncob Residues as Gasification Feedstock and Assessment for Characterization of Corncob Ash from Gasification

Yao

Liang

2016

BioResources

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Harnessing energy from biomass is environmentally friendly because of the essentially zero net CO2 impact. As a common agricultural byproduct, corncobs are abundant in quantity. This study was carried out to examine the thermo-physical properties of corncobs and characterize the properties of corncob ash produced from gasification, in order to provide a basis for transforming it into value-added products. The results showed that the pyrolysis of corncobs followed a three-step, stepwise mechanism. Activation energies calculated by the Coats-Redfern method at heating rates of 5, 10, and 20 °C/min were 79.08, 76.73, and 75.78 kJ·mol -1 , respectively, implying that the corncobs could be decomposed easily at high heating rates. The emissions of CO, CO2, CH4, H2, H2O, and O2 during pyrolysis corresponded well with thermal curves. Corncob ash could be a good fertilizer because of its high contents of K, P, and Ca. The high SiO2 content makes the corncob ash suitable for ceramics and blended cement concrete. Sylvite (KCl) and quartz (SiO2) were the two major crystal phases in the corncob ash. Relatively large particles of unburnt carbon residues in the ash indicated that low-cost adsorbent could be developed from these carbon residues.

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Section: Introductionmentioning

confidence: 99%

Research on the Thermo-Physical Properties of Corncob Residues as Gasification Feedstock and Assessment for Characterization of Corncob Ash from Gasification

Yao

Liang

2016

BioResources

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“…Carbonyls had a high correlation with acetonitrile, benzene and among themselves, particularly for smaller carbonyls (acetaldehyde, C3-C5 carbonyls). The biomass burning emissions were probably transported by on the prevailing northerly wind above Northeast Egypt (southern side of Suez Canal) where crop residues especially rice straw is often directly burned in the open fields (Abdelhady et al, 2014;Said et al, 2013;Youssef et al, 2009).…”

Section: Case Studies: the Arabian Gulf And Suez Regionmentioning

confidence: 99%

Measurements of carbonyl compounds around the Arabian Peninsula indicate large missing sources of acetaldehyde

Wang

Edtbauer

Stönner

et al. 2020

Preprint

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Abstract. Volatile organic compounds (VOCs) were measured around the Arabian Peninsula using a research vessel during the AQABA campaign (Air Quality and Climate Change in the Arabian Basin) from June to August 2017. In this study we examine carbonyl compounds (CxHyO), measured by a proton transfer reaction mass spectrometer (PTR-ToF-MS), and present both a regional concentration distribution and a budget assessment for these key atmospheric species. Among the aliphatic carbonyls, acetone had the highest mixing ratios in most of the regions traversed, varying from 0.43 ppb over the Arabian Sea to 4.5 ppb over the Arabian Gulf, followed by formaldehyde (measured by Hantzsch monitor, 0.82 ppb over the Arabian Sea and 3.8 ppb over the Arabian Gulf) and acetaldehyde (0.16 ppb over the Arabian Sea and 1.7 ppb over the Arabian Gulf). Unsaturated carbonyls (C4–C9) varied from 10 to 700 ppt during the campaign, and followed similar regional mixing ratio dependence as aliphatic carbonyls, which were identified as oxidation products of cycloalkanes over polluted areas. An empirical method based on hydrocarbon ratios was applied to investigate the photochemical source strength of the aliphatic carbonyls. While the distribution and relative concentration enhancements of the C3–C8 aliphatic carbonyls could be explained by this method, that of acetaldehyde could not. A smaller but still significant discrepancy was found when comparing measurements to global chemistry-transport model (EMAC) results, with the model underestimating the measured acetaldehyde mixing ratio up to an order of magnitude. Implementing a photolytically driven marine source of acetaldehyde significantly improved the agreement between measurements and model, particularly over the remote regions (e.g. Arabian Sea). However, the newly introduced acetaldehyde source was still insufficient to describe the observations over the most polluted regions (Arabian Gulf and Suez), where model underestimation of primary emissions and biomass burning events are possible reasons.

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“…At present, researchers pay much attention to studying combustion from oil palm biomass, because it is more efficient and economical [1][2][3][4]. Fluidized-bed technology has proven to be the most effective in transforming various types of palm oil biomass into a renewable and sustainable energy [5][6][7][8][9][10]. Biomass fuels from various oil-palm composites are more efficient and economical than coal biomass.…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies on Combustion Characteristics of Oil-Palm Biomass in Fluidized-Bed: A Heat Energy Alternative

Hani

Mahidin

Husin

et al. 2020

ARFMTS

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One of the technologies that can be used to meet energy needs is biomass combustion. In this study, the oil palm biomass fuels used were empty fruit bunches, oil palm fibers, oil palm midribs, and palm kernel shells. This research was carried out by a direct combustion method using a fluidized-bed combustor. The purpose of this experiment was to investigate the reaction of kinetics and the mechanism of combustion of oilpalm biomass in fluidized-bed combustor. The characteristics observed in this test were the combustion temperature profile, flue-gas composition, and the composition of the ash-deposit chemical compound. The results of the experiments conducted showed that the best biomass combustion temperature profile was recorded at 2 kg biomass with an air flow rate of 0.9375 m 3 /s at 90.1%. The maximum temperature of biomass combustion recorded at biomass 3 kg with an air flow rate of 1.25 m 3 /s are 950 o C (95%). The higher conversion combustion of biomass was found at biomass condition of 3 kg with an air flow rate of 0.9375 m 3 /s. The value of O2 emissions from biomass combustion shows that it was very small 0.2%. While the highest CO2 value was recorded at 19.9%. The highest combustion efficiency on FBC found 1 kg of biomass fuel with an air flow rate of 0.0654 m 3 /s recorded 94.9%.

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Experimental study on Egyptian biomass combustion in circulating fluidized bed

Cited by 44 publications

References 3 publications

Research on the Thermo-Physical Properties of Corncob Residues as Gasification Feedstock and Assessment for Characterization of Corncob Ash from Gasification

Research on the Thermo-Physical Properties of Corncob Residues as Gasification Feedstock and Assessment for Characterization of Corncob Ash from Gasification

Measurements of carbonyl compounds around the Arabian Peninsula indicate large missing sources of acetaldehyde

Experimental Studies on Combustion Characteristics of Oil-Palm Biomass in Fluidized-Bed: A Heat Energy Alternative

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