Experimental results of gasification of walnut shell and pistachio shell in a bubbling fluidized bed gasifier under air and steam atmospheres

Karataş, Hakan; Akgün, Fehmi

doi:10.1016/j.fuel.2017.10.061

Cited by 66 publications

(24 citation statements)

References 22 publications

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“…The developed simulation model has been validated using experimental data of Rapagnà and Latif [32] and Karatas and Akgun [38] for steam gasification. Rapagnà and Latif used a lab-scale fluidized-bed reactor as gasifier, at 1 bar and 800 • C and hazelnut shells as biomass feedstock.…”

Section: Steam Gasification Results and Model Validationmentioning

confidence: 99%

Development of a Chemical Quasi-Equilibrium Model of Biomass Waste Gasification in a Fluidized-Bed Reactor by Using Aspen Plus

2019

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In the delicate context of climate change, biomass gasification has been demonstrated to be a very useful technology to produce power and hydrogen. Nevertheless, in literature, there is a lack of a flexible and fast but accurate model of biomass gasification that can be used with all the combinations of oxidizing agents, taking into account both organic and inorganic contaminants, and able to give results that are more realistic. In order to do that, a model of biomass gasification has been developed using the chemical engineering software Aspen Plus. The developed model is based on the Gibbs free energy minimization applying the restricted quasi-equilibrium approach via Data-Fit regression from experimental data. The simulation results obtained, considering different mixes of gasifying agents, were compared and validated against experimental data reported in literature for the most advanced fluidized bed technology. The maximum discrepancy value obtained for hydrogen, with respect to experimental data, is of 8%, and all the other values reached by the developed simulations, considering both organic and inorganic compounds, are in good agreement with literature data. The gas yield reached by the developed simulation is in the range of 1.1-1.3 Nm 3 /kg. Author Contributions: Conceptualization, E.B.; methodology, V.M., E.B.; software, V.M.; validation, V.M., E.B.; resources, E.B.; data curation, V.M.; writing-original draft preparation, V.M.; writing-review and editing, V.M., E.B. and D.M.; supervision, E.B. and D.M.; project administration, E.B.; funding acquisition, E.B. All authors have read and agreed to the published version of the manuscript.

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Section: Steam Gasification Results and Model Validationmentioning

confidence: 99%

Development of a Chemical Quasi-Equilibrium Model of Biomass Waste Gasification in a Fluidized-Bed Reactor by Using Aspen Plus

2019

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“…These properties are associated with the low ash and high lignin contents of the shells and hard shells such as WS have relatively low ash contents. 66 Due to high carbon and low ash contents, WS is therefore a suitable material for the production of ACs.…”

Section: Activated Carbons Prepared From Walnut Shellmentioning

confidence: 99%

Recent advances in the use of walnut (Juglans regia L.) shell as a valuable plant-based bio-sorbent for the removal of hazardous materials

et al. 2020

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“…The desired gasification temperature is achieved by partial combustion. The yield of producer gas, CGE and tar contents in the syngas are dependent on the temperature of gasification [52]. Perez et al [53] investigated the thermodynamic and fluid-dynamic analysis of sugarcane bagasse in BFBG.…”

Section: Effect Of Er On Gasifier Temperaturementioning

confidence: 99%

Assessment of biomass energy potential for SRC willow woodchips in a pilot scale bubbling fluidized bed gasifier

Hai

Sher

Yaqoob

et al. 2019

Fuel

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The current study investigates the short rotation coppice (SRC) gasification in a bubbling fluidized bed gasifier (BFBG) with air as gasifying medium. The thermochemical processes during combustion were studied to get better control over the air gasification and to improve its effectiveness. The combustion process of SRC was studied by different thermo-analytical techniques. The thermogravimetric analysis (TGA), derivative thermogravimetry (DTG), and differential scanning calorimetry (DSC) were performed to examine the thermal degradation and heat flow rates. The product gas composition (CO, CO2, CH4 and H2) produced during gasification was analyzed systematically by using an online gas analyzer and an offline GC analyzer. The influence of different equivalence ratios on product gas composition and temperature profile was investigated during SRC gasification. TG/DTG results showed degradation occur in four stages; drying, devolatilization, char combustion and ash formation. Maximum mass loss~70% was observed in devolatilization stage and two sharp peaks at 315-500°C in TG/DSC curves indicate the exothermic reactions. The temperature of gasifier was increased in the range of 650-850 o C along with the height of the reactor with increasing equivalent ratio (ER) from

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Experimental results of gasification of walnut shell and pistachio shell in a bubbling fluidized bed gasifier under air and steam atmospheres

Cited by 66 publications

References 22 publications

Development of a Chemical Quasi-Equilibrium Model of Biomass Waste Gasification in a Fluidized-Bed Reactor by Using Aspen Plus

Development of a Chemical Quasi-Equilibrium Model of Biomass Waste Gasification in a Fluidized-Bed Reactor by Using Aspen Plus

Recent advances in the use of walnut (Juglans regia L.) shell as a valuable plant-based bio-sorbent for the removal of hazardous materials

Assessment of biomass energy potential for SRC willow woodchips in a pilot scale bubbling fluidized bed gasifier

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