Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/3830
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dc.contributor.authorFernandes, Natércia C. P.-
dc.contributor.authorCastro, José A. A. M.-
dc.date.accessioned2008-08-29T15:27:08Z-
dc.date.available2008-08-29T15:27:08Z-
dc.date.issued2000en_US
dc.identifier.citationChemical Engineering Science. 55:18 (2000) 3729-3738en_US
dc.identifier.urihttp://hdl.handle.net/10316/3830-
dc.description.abstractThis paper is concerned with the mathematical modeling and simulation of the steady-state operation of an industrial moving bed heterogeneous reactor for the kraft pulping of Eucalyptus globulus. The cooking takes place in a single-vessel hydraulic digester adapted for isothermal cooking (ITC), a further development of the modified continuous cooking (MCC) process. A heterogeneous model is used to take into account the different phases, each with distinct profiles of temperature and concentration of organic (lignin, cellulose and hemicellulose) and inorganic (effective alkali and sulfide) compounds. The numerical solution of the model is based on a non-uniform discretization strategy to cope with special geometric and operational features of the digester. The decrease in bulk porosity caused by the compaction of the bed and the progressive increase in the voidage of chips as a result of chemical reactions are incorporated into the model as well as the resulting implications in the entrapped and free liquor flows. The model presented here can be used in optimization studies and has been validated with data from an industrial mill.en_US
dc.description.urihttp://www.sciencedirect.com/science/article/B6TFK-40GJ2MB-D/1/fd03feb4f6373ea0a583b9ddc3b427eden_US
dc.format.mimetypeaplication/PDFen
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectSimulationen_US
dc.subjectMathematical modelingen_US
dc.subjectMulti-phase reactoren_US
dc.subjectMoving beden_US
dc.subjectPulping digesteren_US
dc.subjectIsothermal cookingen_US
dc.titleSteady-state simulation of a continuous moving bed reactor in the pulp and paper industryen_US
dc.typearticleen_US
dc.identifier.doi10.1016/S0009-2509(00)00063-4-
item.fulltextCom Texto completo-
item.grantfulltextopen-
item.languageiso639-1en-
Appears in Collections:FCTUC Eng.Química - Artigos em Revistas Internacionais
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