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Simulation of a downdraft gasifier for production of syngas from different biomass feedstocks

2021Artigo científico Acesso aberto
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dc.contributor.authorPaiva, Mateus Vinicius
dc.contributor.authorVieira, Admilson L.
dc.contributor.authorGomes, Helder
dc.contributor.authorBrito, Paulo
dc.date.accessioned2021-10-01T10:10:50Z
dc.date.available2021-10-01T10:10:50Z
dc.date.issued2021
dc.description.abstractIn the evaluation of gasification processes, estimating the composition of the fuel gas for different conditions is fundamental to identify the best operating conditions. In this way, modeling and simulation of gasification provide an analysis of the process performance, allowing for resource and time savings in pilot-scale process operation, as it predicts the behavior and analyzes the effects of different variables on the process. Thus, the focus of this work was the modeling and simulation of biomass gasification processes using the UniSim Design chemical process software, in order to satisfactorily reproduce the operation behavior of a downdraft gasifier. The study was performed for two residual biomasses (forest and agricultural) in order to predict the produced syngas composition. The reactors simulated gasification by minimizing the free energy of Gibbs. The main operating parameters considered were the equivalence ratio (ER), steam to biomass ratio (SBR), and gasification temperature (independent variables). In the simulations, a sensitivity analysis was carried out, where the effects of these parameters on the composition of syngas, flow of syngas, and heating value (dependent variables) were studied, in order to maximize these three variables in the process with the choice of the best parameters of operation. The model is able to predict the performance of the gasifier and it is qualified to analyze the behavior of the independent parameters in the gasification results. With a temperature between 850 and 950 C, SBR up to 0.2, and ER between 0.3 and 0.5, the best operating conditions are obtained for maximizing the composition of the syngas in CO and H2.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPaiva, Mateus; Vieira, Admilson; Gomes, Helder; Brito, Paulo (2021). Simulation of a downdraft gasifier for production of syngas from different biomass feedstocks. ChemEngineering. ISSN 2305-7084. 5:2, p. 1-24pt_PT
dc.identifier.doi10.3390/chemengineering5020020pt_PT
dc.identifier.issn2305-7084
dc.identifier.urihttp://hdl.handle.net/10198/23950
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectBiomass gasificationpt_PT
dc.subjectDowndraft gasifierpt_PT
dc.subjectProcess simulationpt_PT
dc.subjectUniSim designpt_PT
dc.titleSimulation of a downdraft gasifier for production of syngas from different biomass feedstockspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue2pt_PT
oaire.citation.titleChemEngineeringpt_PT
oaire.citation.volume5pt_PT
person.familyNameGomes
person.familyNameBrito
person.givenNameHelder
person.givenNamePaulo
person.identifier.ciencia-id6218-1E19-13EE
person.identifier.ciencia-idA31A-D845-A6E2
person.identifier.orcid0000-0001-6898-2408
person.identifier.orcid0000-0003-1805-0252
person.identifier.scopus-author-id31168231800
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication0eb96337-224a-4339-9918-334436fbbb99
relation.isAuthorOfPublication0370deac-dc4e-4b3d-8e1f-fc2d117794d2
relation.isAuthorOfPublication.latestForDiscovery0eb96337-224a-4339-9918-334436fbbb99

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