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dc.contributor.authorKumar, Mayank
dc.contributor.authorGhoniem, Ahmed F.
dc.date.accessioned2016-02-25T12:42:43Z
dc.date.available2016-02-25T12:42:43Z
dc.date.issued2013-06
dc.identifier.citationKumar M, Ghoniem AF (2013) Application of a validated gasification model to determine the impact of coal particle grinding size on carbon conversion. Fuel 108: 565–577. Available: http://dx.doi.org/10.1016/j.fuel.2013.02.009.
dc.identifier.issn0016-2361
dc.identifier.doi10.1016/j.fuel.2013.02.009
dc.identifier.urihttp://hdl.handle.net/10754/597593
dc.description.abstractIn this paper, we describe the implementation of a comprehensive, previously validated multiscale model of entrained flow gasification to examine the impact of particle size on the gasification process in two different gasifier designs; the MHI and the GE gasifier. We show that the impact of the particle size depends on whether the char conversion process is kinetically limited or boundary layer diffusion-limited. Fine grinding helps accelerate char conversion under diffusion-control conditions, whereas the impact is not as noticeable under kinetic-control operation. The availability of particular gasification agents, namely O2 in the earlier sections of the gasifier or CO2 and H2O in the latter sections, as well as the temperature, are shown to have an impact on the relative importance of kinetics versus diffusion limitation. © 2013 Elsevier Ltd. All rights reserved.
dc.description.sponsorshipThis research is funded by the BP-MIT Conversion Research Program. MK was supported by MASDAR. The computational facilities were supported in part by KAUST.
dc.publisherElsevier BV
dc.subjectChar particle size
dc.subjectCoal gasification
dc.subjectDiffusion-limitation
dc.subjectEntrained flow
dc.subjectKinetics-limitation
dc.titleApplication of a validated gasification model to determine the impact of coal particle grinding size on carbon conversion
dc.typeArticle
dc.identifier.journalFuel
dc.contributor.institutionMassachusetts Institute of Technology, Cambridge, United States
kaust.acknowledged.supportUnitComputational facilities


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