High-resolution simulations of coal injection in A gasifier

Tingwen Li, Aytekin Gel, Madhava Syamlal, Chris Guenther, Sreekanth Pannala

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

This study demonstrates an approach to effectively combine high- and low-resolution simulations for design studies of industrial coal gasifier. The flow-field data from a 10 million cell full-scale simulation of a commercial-scale gasifier were used to construct a reduced configuration to economically study the coal injection in detail. High-resolution numerical simulations of the coal injection were performed using the open-source code MFIX running on a high performance computing system. Effects of grid resolution and numerical discretization scheme on the predicted behavior of coal injection and gasification kinetics were analyzed. Pronounced differences were predicted in the devolatilization and steam gasification rates because of different discretization schemes, implying that a high-order numerical scheme is required to predict well the unsteady gasification process on an adequately resolved grid. Computational costs for simulations of varying resolutions are presented to illustrate the trade-off between the accuracy of solution and the time-to-solution, an important consideration when engineering simulations are used for the design of commercial-scale units.

Original languageEnglish (US)
Pages (from-to)10767-10779
Number of pages13
JournalIndustrial and Engineering Chemistry Research
Volume49
Issue number21
DOIs
StatePublished - Nov 3 2010
Externally publishedYes

Fingerprint

Coal
Gasification
Steam
Flow fields
Kinetics
Computer simulation
Costs

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering

Cite this

High-resolution simulations of coal injection in A gasifier. / Li, Tingwen; Gel, Aytekin; Syamlal, Madhava; Guenther, Chris; Pannala, Sreekanth.

In: Industrial and Engineering Chemistry Research, Vol. 49, No. 21, 03.11.2010, p. 10767-10779.

Research output: Contribution to journalArticle

Li, T, Gel, A, Syamlal, M, Guenther, C & Pannala, S 2010, 'High-resolution simulations of coal injection in A gasifier', Industrial and Engineering Chemistry Research, vol. 49, no. 21, pp. 10767-10779. https://doi.org/10.1021/ie100519s
Li, Tingwen ; Gel, Aytekin ; Syamlal, Madhava ; Guenther, Chris ; Pannala, Sreekanth. / High-resolution simulations of coal injection in A gasifier. In: Industrial and Engineering Chemistry Research. 2010 ; Vol. 49, No. 21. pp. 10767-10779.
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