Unburnt carbon and ashing behavior for slow burning of lignite under oxygen-enriched combustion conditions

H. Haykiri-Acma, Y. Cekic, S. Yaman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Oxygen-enriched combustion of coal has so far been investigated using either entrained flow reactors or fluidized-bed combustors where burning takes place rapidly due to high heating rates. On the contrary, this paper presents the results of slow burning of coal under oxygen-enriched combustion conditions. Ashing behavior of mineral matter-rich low-rank coal from Turkish Tekirdag-Malkara lignite under oxygen-enriched conditions was investigated to determine the effect of this combustion technique on unburnt carbon, mineralogical characteristics and the burning performance. These experiments showed that the influence of O2 concentration on ashing is much more evident than the temperature during oxygen-enriched combustion.

Original languageEnglish
Pages (from-to)1326-1335
Number of pages10
JournalEnergy Sources, Part A: Recovery, Utilization and Environmental Effects
Volume41
Issue number11
DOIs
Publication statusPublished - 3 Jun 2019

Bibliographical note

Publisher Copyright:
© 2018, © 2018 Taylor & Francis Group, LLC.

Keywords

  • Lignite
  • mineralogy
  • oxygen-enriched combustion
  • slow burning
  • unburnt carbon

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