The chemical percolation devolatilization model applied to the devolatilization of coal in high intensity acoustic fields

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dc.contributor.authorVeras, CAG
dc.contributor.authorCarvalho, J. A.
dc.contributor.authorFerreira, M. A.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de Brasília (UnB)
dc.contributor.institutionInst Nacl Pesquisas Espaciais
dc.date.accessioned2020-12-10T18:01:09Z
dc.date.available2020-12-10T18:01:09Z
dc.date.issued2002-05-01
dc.description.abstractThe chemical percolation devolatilization model (CPD) was extended for the prediction of drying and devolatilization of coal particles in high intensity acoustic fields found in Rijke tube reactors. The acoustic oscillations enhance the heat and mass transfer processes in the fuel bed as well as in the freeboard, above the grate. The results from simulations in a Rijke tube combustor have shown an increase in the rate of water evaporation and thermal degradation of the particles. The devolatilization model, based on chemical percolation, applied in pulsating regime allowed the dynamic prediction on the yields of CO, CO2, CH4, H2O, other light gases as well as tar which are important on ignition and stabilization of flames. The model predicted the quantity and form of nitrogen containing species generated during devolatilization, for which knowledge is strategically indispensable for reducing pollutant emissions (NOx) in flames under acoustic excitation.en
dc.description.affiliationUniv Estadual Paulista, Dept Energia, BR-12516410 Guaratingueta, SP, Brazil
dc.description.affiliationUniv Brasilia, Dept Engn Mecan, BR-70910900 Brasilia, DF, Brazil
dc.description.affiliationInst Nacl Pesquisas Espaciais, Lab Assoc Combustao & Prop, BR-12630000 Cachoeira Paulista, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Energia, BR-12516410 Guaratingueta, SP, Brazil
dc.format.extent358-367
dc.identifier.citationJournal Of The Brazilian Chemical Society. Sao Paulo: Soc Brasileira Quimica, v. 13, n. 3, p. 358-367, 2002.
dc.identifier.issn0103-5053
dc.identifier.urihttp://hdl.handle.net/11449/195716
dc.identifier.wosWOS:000175620200010
dc.language.isoeng
dc.publisherSoc Brasileira Quimica
dc.relation.ispartofJournal Of The Brazilian Chemical Society
dc.sourceWeb of Science
dc.subjectchemical percolation devolatilization model
dc.subjectacoustic fields
dc.subjectRijke tube
dc.titleThe chemical percolation devolatilization model applied to the devolatilization of coal in high intensity acoustic fieldsen
dc.typeArtigo
dcterms.rightsHolderSoc Brasileira Quimica

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