Application of a validated gasification model to determine the impact of coal particle grinding size on carbon conversion

Handle URI:
http://hdl.handle.net/10754/597593
Title:
Application of a validated gasification model to determine the impact of coal particle grinding size on carbon conversion
Authors:
Kumar, Mayank; Ghoniem, Ahmed F.
Abstract:
In 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.
Citation:
Kumar 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.
Publisher:
Elsevier BV
Journal:
Fuel
Issue Date:
Jun-2013
DOI:
10.1016/j.fuel.2013.02.009
Type:
Article
ISSN:
0016-2361
Sponsors:
This research is funded by the BP-MIT Conversion Research Program. MK was supported by MASDAR. The computational facilities were supported in part by KAUST.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorKumar, Mayanken
dc.contributor.authorGhoniem, Ahmed F.en
dc.date.accessioned2016-02-25T12:42:43Zen
dc.date.available2016-02-25T12:42:43Zen
dc.date.issued2013-06en
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.en
dc.identifier.issn0016-2361en
dc.identifier.doi10.1016/j.fuel.2013.02.009en
dc.identifier.urihttp://hdl.handle.net/10754/597593en
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.en
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.en
dc.publisherElsevier BVen
dc.subjectChar particle sizeen
dc.subjectCoal gasificationen
dc.subjectDiffusion-limitationen
dc.subjectEntrained flowen
dc.subjectKinetics-limitationen
dc.titleApplication of a validated gasification model to determine the impact of coal particle grinding size on carbon conversionen
dc.typeArticleen
dc.identifier.journalFuelen
dc.contributor.institutionMassachusetts Institute of Technology, Cambridge, United Statesen
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