Three-dimensional simulation of flow and combustion for pulverised coal injection

Baoyu Guo, Paul Zulli, Harold Rogers, John G. Mathieson, Aibing Yu

Research output: Contribution to journalArticleResearchpeer-review

40 Citations (Scopus)

Abstract

A three-dimensional numerical model of pulverised coal injection has been developed for simulating coal flow and combustion in the tuyere and raceway of a blast furnace. The model has been used to simulate previously reported combustion tests, which feature an inclined co-axial lance with an annular cooling gas. The predicted coal burnout agrees well with that measured for three coals with volatile contents and particle size ranging between 20.2-36.4% and particle sizes 1-200μm. Many important phenomena including flow asymmetry, recirculating flow and particle dispersion in the combustion chamber have been predicted. The current model can reproduce the experimental observations including the effects on burnout of coal flowrate and the introduction of methane for lance cooling.

Original languageEnglish
Pages (from-to)1272-1281
Number of pages10
JournalISIJ International
Volume45
Issue number9
DOIs
Publication statusPublished - 23 Nov 2005

Keywords

  • Blast furnace
  • Coal combustion
  • Numerical modelling
  • Pulverised coal injection

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