Transient ignition model of single coal particle in diffusion counterflow flame

Ning Wu, Shuiqing Li, Qiang Yao, Chung King Law

Research output: Contribution to journalArticle

Abstract

A transient ignition model of single coal particle in one-dimensional reaction zone of counterflow flame was developed to calculate the particle temperature, density and production changes when it crosses the flame. The effects of flow, temperature and gas composition on the ignition characteristics were analyzed. Results show that the particle heating rate can reach as high as 1×105 K/s. With the increase of particle size, the ignition temperature of coal particle decreases monotonously, while the ignition delay time shows a gradual growth, probably due to the rapid ignition of volatile in an oxidizing atmosphere.

Original languageEnglish (US)
Pages (from-to)15-19
Number of pages5
JournalRanshao Kexue Yu Jishu/Journal of Combustion Science and Technology
Volume22
Issue number1
DOIs
StatePublished - Feb 15 2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

Keywords

  • Counterflow flame
  • Ignition model
  • Single coal particle

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