DC Field | Value | Language |
---|---|---|
dc.contributor.author | LEE, DH | ko |
dc.contributor.author | KIM, JO | ko |
dc.contributor.author | Kim, Sang Done | ko |
dc.date.accessioned | 2008-05-07T02:36:45Z | - |
dc.date.available | 2008-05-07T02:36:45Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 1993 | - |
dc.identifier.citation | CHEMICAL ENGINEERING COMMUNICATIONS, v.119, pp.179 - 196 | - |
dc.identifier.issn | 0098-6445 | - |
dc.identifier.uri | http://hdl.handle.net/10203/4404 | - |
dc.description.abstract | The effects of liquid surface tension (42.6 approximately 72.4 mN/m) and viscosity (1 approximately 214 mPa.S(n)), liquid (0.01 approximately 0.12 m/s) and gas (0.01 approximately 0.20 m/s) velocities and particle sizes (1 approximately 8 mm) on phase holdup and mass transfer coefficient (k(L)a) have been determined in a 0.142 m-I.D. x 2.0 m-high Plexiglas column. ne gas phase holdup increases with liquid velocity, and the rate of increase in gas phase holdup sharply increases with gas velocity in the bed of surfactant solutions. In the beds of 1.0 and 1.7 mm glass beads, the bed contraction occurs whereas in the beds of 2.3 mm glass beads the bed contraction does not occur with an aqueous soltuion of ethanol (sigma = 50.4 mN/m). The value of k(L)a increases with decreasing surface tension (sigma) but it decreases exponentially with increasing liquid viscosity in continuous bubble columns and three-phase fluidized beds. In three-phase fluidized beds with surfactant solutions, k(L)a increases with gas and liquid velocities and particle size. In three-phase fluidized beds of viscous or surfactant soltuions, k(L)a can be estimated in terms of the energy dissipation rate based on the isotropic turbulence theory and a flow regime map is proposed based on the drift flux theory. | - |
dc.description.sponsorship | Korea Science and Engineering Foundation | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | GORDON BREACH SCI PUBL LTD | - |
dc.subject | FLOATING BUBBLE BREAKERS | - |
dc.subject | HEAT-TRANSFER | - |
dc.subject | GAS HOLDUP | - |
dc.subject | LIQUID | - |
dc.subject | COLUMNS | - |
dc.subject | HYDRODYNAMICS | - |
dc.subject | BEHAVIOR | - |
dc.title | MASS-TRANSFER AND PHASE HOLDUP CHARACTERISTICS IN 3-PHASE FLUIDIZED-BEDS | - |
dc.type | Article | - |
dc.identifier.wosid | A1993LZ02900012 | - |
dc.identifier.scopusid | 2-s2.0-0001081964 | - |
dc.type.rims | ART | - |
dc.citation.volume | 119 | - |
dc.citation.beginningpage | 179 | - |
dc.citation.endingpage | 196 | - |
dc.citation.publicationname | CHEMICAL ENGINEERING COMMUNICATIONS | - |
dc.identifier.doi | 10.1080/00986449308936115 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Kim, Sang Done | - |
dc.contributor.nonIdAuthor | KIM, JO | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | MASS TRANSFER | - |
dc.subject.keywordAuthor | FLOW REGIME MAP | - |
dc.subject.keywordAuthor | PHASE HOLDUP | - |
dc.subject.keywordAuthor | 3-PHASE FLUIDIZED BEDS | - |
dc.subject.keywordPlus | FLOATING BUBBLE BREAKERS | - |
dc.subject.keywordPlus | HEAT-TRANSFER | - |
dc.subject.keywordPlus | GAS HOLDUP | - |
dc.subject.keywordPlus | LIQUID | - |
dc.subject.keywordPlus | COLUMNS | - |
dc.subject.keywordPlus | HYDRODYNAMICS | - |
dc.subject.keywordPlus | BEHAVIOR | - |
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