Numerical and experimental analysis of municipal solid wastes gasification process

Couto, Nuno; Silva, Valter; Monteiro, Eliseu; Teixeira, Sandra; Chacartegui, Ricardo; Bouziane, K.; Brito, Paulo; Rouboa, Abel

doi:10.1016/j.applthermaleng.2014.12.036

Cited by 71 publications

(21 citation statements)

References 33 publications

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“…Contrary to biomass gasification that comprises conversion of pure, source separated organic material (e.g. trimmings, pruning, leaves of urban park and garden waste), gasification has also been applied to mixed municipal solid waste (Arena 2012;Couto et al 2015).…”

Section: Gasificationmentioning

confidence: 99%

Treatment technologies for urban solid biowaste to create value products: a review with focus on low- and middle-income settings

Lohri

Diener

Zabaleta

et al. 2017

Rev Environ Sci Biotechnol

235

116

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Section: Gasificationmentioning

confidence: 99%

Treatment technologies for urban solid biowaste to create value products: a review with focus on low- and middle-income settings

Lohri

Diener

Zabaleta

et al. 2017

Rev Environ Sci Biotechnol

235

116

View full text Add to dashboard Cite

“…A similar strategy was successfully applied to biomass gasification in the 250 kW th reactor, again the experimental and the numerical results presented inferior deviations once the UDFs routines were implemented. Indeed, a better agreement between experimental and numerical results for the syngas composition was found with a 15-30% range error deviation decrease for species composition regarding former validations using biomass and MSW [17,20].…”

Section: Model Validationmentioning

confidence: 79%

“…Such complex process was studied by implementing a two-dimensional multiphase model within the FLUENT database. Our model was firstly developed in the study of biomass gasification by Silva et al [17,19], being later extended to MSW gasification [20,21,33]. The model considers the gas phase as continuous, and the two solid phases (dolomite and MSW) follow an Eulerian granular model.…”

Section: Mathematical Modelmentioning

confidence: 99%

Hydrodynamic Modelling of Municipal Solid Waste Residues in a Pilot Scale Fluidized Bed Reactor

et al. 2017

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Abstract:The present study investigates the hydrodynamics and heat transfer behavior of municipal solid waste (MSW) gasification in a pilot scale bubbling fluidized bed reactor. A multiphase 2-D numerical model following an Eulerian-Eulerian approach within the FLUENT framework was implemented. User defined functions (UDFs) were coupled to improve hydrodynamics and heat transfer phenomena, and to minimize deviations between the experimental and numerical results. A grid independence study was accomplished through comparison of the bed volume fraction profiles and by reasoning the grid accuracy and computational cost. The standard deviation concept was used to determine the mixing quality indexes. Simulated results showed that UDFs improvements increased the accuracy of the mathematical model. Smaller size ratio of the MSW-dolomite mixture revealed a more uniform mixing, and larger ratios enhanced segregation. Also, increased superficial gas velocity promoted the solid particles mixing. Heat transfer within the fluidized bed showed strong dependence on the MSW solid particles sizes, with smaller particles revealing a more effective process.

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“…When O 2 reaches ~ 3% concentrations of CO and H 2 start increasing. Concentration of CO 2 increases and has a maximum at complete burnout of O2; subsequently it starts decreasing due to reaction of gasification in carbon dioxide [5,6].…”

Section: Resultsmentioning

confidence: 99%

Investigation of combustion and gasification mechanically activated coal fuel of various degrees of metamorphism on the 5-MW heat setup

2017

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Abstract. The technology of mechanochemical activation of combustion and gasification of coals is of unquestionable scientific and technical interest; an increase in chemical activity of coals at their mechanically activated grinding is associated with an increase in the rate of reaction of the coal substance. To study the combustion and gasification process, the reactor model with tangential scroll input of coal-air suspension and cylindrical reaction chamber was used at the 5-MW thermal power plant. The experiments were carried out with coals of G and SS grades of the Kuznetsk deposit. Coal, ground after the boiler's standard mill, is fed by a feeder to the disintegrator; then, it enters the scroll inlet of the reactor burner with transport air. The suspension is ignited by a gas igniting device with the power of 50 kW. In experiments on combustion and gasification of fine coal performed at the temperature in the reaction chamber of 1000-1300°C and air excess α = 0.5-0.7, the data on concentrations of CO and H 2 were obtained: for coal of grade G, concentration of H 2 was 6.3% and concentration of CO was 15.3%; for coal of SS grade, concentration of H 2 was 9.5% and concentration of CO was 15.6%.

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Numerical and experimental analysis of municipal solid wastes gasification process

Cited by 71 publications

References 33 publications

Treatment technologies for urban solid biowaste to create value products: a review with focus on low- and middle-income settings

Treatment technologies for urban solid biowaste to create value products: a review with focus on low- and middle-income settings

Hydrodynamic Modelling of Municipal Solid Waste Residues in a Pilot Scale Fluidized Bed Reactor

Investigation of combustion and gasification mechanically activated coal fuel of various degrees of metamorphism on the 5-MW heat setup

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