Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.ces.2011.06.006
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dc.titleFlow behaviors in the downer of a large-scale triple-bed combined circulating fluidized bed system with high solids mass fluxes
dc.contributor.authorGuan, G.
dc.contributor.authorFushimi, C.
dc.contributor.authorIshizuka, M.
dc.contributor.authorNakamura, Y.
dc.contributor.authorTsutsumi, A.
dc.contributor.authorMatsuda, S.
dc.contributor.authorSuzuki, Y.
dc.contributor.authorHatano, H.
dc.contributor.authorCheng, Y.
dc.contributor.authorChuan Lim, E.W.
dc.contributor.authorWang, C.-H.
dc.date.accessioned2014-10-09T06:47:55Z
dc.date.available2014-10-09T06:47:55Z
dc.date.issued2011-09-15
dc.identifier.citationGuan, G., Fushimi, C., Ishizuka, M., Nakamura, Y., Tsutsumi, A., Matsuda, S., Suzuki, Y., Hatano, H., Cheng, Y., Chuan Lim, E.W., Wang, C.-H. (2011-09-15). Flow behaviors in the downer of a large-scale triple-bed combined circulating fluidized bed system with high solids mass fluxes. Chemical Engineering Science 66 (18) : 4212-4220. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ces.2011.06.006
dc.identifier.issn00092509
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/88924
dc.description.abstractThe flow behaviors in the downer of a large-scale triple-bed circulating fluidized bed (TBCFB) gasifier cold model, which is composed of a downer (φ 0.1m×6.5m), a bubbling fluidized bed (BFB, 0.75×0.27×3.4m3), a riser (φ 0.1m×16.6m) and a gas-sealing bed (GSB, φ 0.158m×5m), were investigated. Sand particles with a density of 2600kg/m3 and an average particle size of 128γm were used as bed materials. Solids mass fluxes were in the range 113-524kg/m2s. Average solids holdup in the developed region of the downer increased with increasing solids mass flux. The gas seal between the riser and the downer had a large effect on the solids holdup distribution in the downer. Compared with the solids holdup in the riser, a relatively low solids holdup was formed in the downer even at high solids loadings. A pressure balance model was set up to predict the solids mass flux for this TBCFB system. It was found that the static bed height in the GSB had a great effect on the solids mass flux. The possibilities of achieving a high density solids holdup in a downer were discussed. © 2011 Elsevier Ltd.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.ces.2011.06.006
dc.sourceScopus
dc.subjectBubbling fluidized bed
dc.subjectDowner
dc.subjectGas seal
dc.subjectHigh density
dc.subjectPressure balance
dc.subjectRiser
dc.subjectTriple-bed combined circulating fluidized bed
dc.typeArticle
dc.contributor.departmentCHEMICAL & BIOMOLECULAR ENGINEERING
dc.description.doi10.1016/j.ces.2011.06.006
dc.description.sourcetitleChemical Engineering Science
dc.description.volume66
dc.description.issue18
dc.description.page4212-4220
dc.description.codenCESCA
dc.identifier.isiut000292543800020
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