Firing a sub-bituminous coal in pulverized coal boilers configured for bituminous coals

N. Spitz, R. Saveliev, M. Perelman, E. Korytni, B. Chudnovsky, A. Talanker, E. Bar-Ziv

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

It is important to adapt utility boilers to sub-bituminous coals to take advantage of their environmental benefits while limiting operation risks. We discuss the performance impact that Adaro, an Indonesian sub-bituminous coal with high moisture content, has on opposite-wall and tangentially-fired utility boilers which were designed for bituminous coals. Numerical simulations were made with GLACIER, a computational-fluid-dynamic code, to depict combustion behavior. The predictions were verified with full-scale test results. For analysis of the operational parameters for firing Adaro coal in both boilers, we used EXPERT system, an on-line supervision system developed by Israel Electric Corporation. It was concluded that firing Adaro coal, compared to a typical bituminous coal, lowers NOx and SO2 emissions, lowers LOI content and improves fouling behavior but can cause load limitation which impacts flexible operation.

Original languageEnglish
Pages (from-to)1534-1542
Number of pages9
JournalFuel
Volume87
Issue number8-9
DOIs
StatePublished - 1 Jul 2008

Keywords

  • NO emissions
  • Pulverized coal combustion
  • Sub-bituminous coal

ASJC Scopus subject areas

  • General Chemical Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

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