Flammability characteristics of treated coals

P. K. Collins, A. R. Schroeder, R. O. Buckius, H. Krier, J. E. Peters

Research output: Contribution to conferencePaperpeer-review


The effects of two treatment processes used to treat coal on the flammability characteristics of the coal are presented. Experiments were conducted on an Entrained Dust Flow Facility which supports a stationary premixed coal dust and air flame. The facility is designed to provide access for thermocouples so that detailed axial and radial temperatures profiles of the coal flames can be used to investigate the flame structure. Flame speeds of the coal and air mixtures were determined based on the inlet velocity of the flow and the temperature maps. Flame speed increases of over 35% were observed as a direct result of an aggregate flotation process which reduced the ash content and the average size of the coal and increased the volatile content and heating value. Partially devolatilized chars were burned to simulate the use of a low volatile solid by-product of a gasification process. Under most conditions either methane addition or inlet air heating was required to establish a flame.

Original languageEnglish (US)
Number of pages6
StatePublished - 1988
EventFossil Fuels Combustion Symposium 1989 - Houston, TX, USA
Duration: Jan 22 1989Jan 25 1989


OtherFossil Fuels Combustion Symposium 1989
CityHouston, TX, USA

ASJC Scopus subject areas

  • Geology
  • Geotechnical Engineering and Engineering Geology


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