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Prenos mase zid-fluid u fluidizovanim slojevima i pri vertikalnom transportu inertnih čestica

dc.creatorBošković-Vragolović, Nevenka
dc.creatorGarić Grulović, Radmila
dc.creatorGrbavčić, Željko
dc.date.accessioned2019-01-30T17:15:20Z
dc.date.available2019-01-30T17:15:20Z
dc.date.issued2007
dc.identifier.issn0352-5139
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/304
dc.description.abstractMass transfer coefficients in single phase flow, liquid fluidized beds and vertical hydraulic transport of spherical inert particles were studied experimentally using 40 mm and 25.4 mm diameter columns. The mass transfer data were obtained by studying the transfer of benzoic acid from a tube segment to water using the dissolution method. In all runs, the mass transfer rates were determined in the presence of spherical glass particles 1.2, 1.94 and 2.98 mm in diameter. The influence of different parameters, such as liquid velocity, particles size and voids on mass transfer in fluidized beds and hydraulic transport are presented. The data for mass transfer in all the investigated systems are shown using the Sherwood number (Sh) and mass transfer factor - Colburn factor (jD) - as a function of Reynolds number (Re) for the particles and for the column. The data for mass transfer in particulate fluidized beds and for vertical hydraulic transport of spherical particles were correlated by treating the flowing fluid-particle mixture as a pseudo fluid by introducing a modified mixture Reynolds number (Rem). A new correlation for the mass transfer factor in fluidized beds and in vertical hydraulic transport is proposed.en
dc.description.abstractU ovom radu je eksperimentalno ispitivan prelaz mase između zida i fluida pri strujanju fluida kroz kolonu i u prisustvu fluidizovanih sfernih inertnih čestica i čestica u transportu. Za određivanje koeficijenta prelaza mase korišćena je metoda praćenja rastvaranja slabo rastvorne supstance - benzoeve kiseline - sa dela zida kolone u vodi. Korišćene su kolone prečnika 40 mm i 25,4 mm, a kao inertne čestice korišćene su staklene sfere prečnika 1,2; 1,94 i 2,98 mm. Prikazani su uticaji različitih parametara kao što su brzina fluida, veličina čestica i poroznost sloja na koeficijent prelaza mase u fluidizovanim slojevima i pri vertikalnom transportu čestica. Eksperimentalni rezultati su prikazani u obliku zavisnosti Šervudovog broja i faktora prenosa mase od Rejnoldsovih brojeva za kolonu i čestice. Uvedena je i veličina pseudofluid koja tretira dvofazni sistem tečnost-čestice kao suspenziju odakle je proistekao modifikovani Rejnoldsov broj mešanja. Uvođenjem ovih veličina data je i završna eksperimentalna korelacija, jedinstvena za fluidizovane slojeve i vertikalni transport čestica. .sr
dc.publisherSerbian Chemical Society
dc.rightsopenAccess
dc.sourceJournal of the Serbian Chemical Society
dc.subjectmass transferen
dc.subjectfluidized beden
dc.subjectvertical transporten
dc.subjectpseudofluiden
dc.titleWall-to-liquid mass transfer in fluidized beds and vertical transport of inert particlesen
dc.titlePrenos mase zid-fluid u fluidizovanim slojevima i pri vertikalnom transportu inertnih česticasr
dc.typearticle
dc.rights.licenseBY-NC-ND
dcterms.abstractГарић Груловић, Радмила; Бошковић-Враголовић, Невенка; Грбавчић, Жељко; Пренос масе зид-флуид у флуидизованим слојевима и при вертикалном транспорту инертних честица; Пренос масе зид-флуид у флуидизованим слојевима и при вертикалном транспорту инертних честица;
dc.citation.volume72
dc.citation.issue11
dc.citation.spage1103
dc.citation.epage1113
dc.citation.other72(11): 1103-1113
dc.citation.rankM23
dc.identifier.doi10.2298/JSC0711103B
dc.identifier.rcubConv_239
dc.identifier.fulltexthttp://cer.ihtm.bg.ac.rs//bitstream/id/8983/302.pdf
dc.identifier.scopus2-s2.0-35948969506
dc.type.versionpublishedVersion


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