Effect of humidity on self-heating of a sub-bituminous coal under adiabatic conditions

Yulianto Sulistyo Nugroho, Rudy R. Rustam, Iman Saleh, Muksin Saleh

Research output: Contribution to journalConference articlepeer-review

7 Citations (Scopus)

Abstract

A spontaneous increase in coal temperature with a possible transition into fires represents a direct hazard to coal storage and transportation. This paper evaluates the self-heating characteristics of a sub-bituminous coal under adiabatic oxidation conditions. This paper assesses the effect of relative humidity of the gas supply on the self-heating rates of coal. It is shown that an increase in the gas supply relative humidity has a marked affect on the self-heating rates of the coal. In this work the sub-bituminous coal sample undergo oxidation most rapidly when the relative humidity of the gas supply is about 70%. The effect of relative humidity decreases as oxygen concentration in the gas supply increases. A practical consequence of this finding is that improved fire safety measures should be considered during sub- bituminous coal related operations in hot and humid regions.

Original languageEnglish
Pages (from-to)179-189
Number of pages11
JournalFire Safety Science
DOIs
Publication statusPublished - 2008
Event9th International Symposium on Fire Safety Science - Karlsruhe, Germany
Duration: 21 Sep 200826 Sep 2008

Keywords

  • Adiabatic oxidation method
  • Coal
  • Risk assessment
  • Self-heating

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