论文信息 - The combustion of Loy Yang brown coal char

The combustion of Loy Yang brown coal char

Abstract Combustion rate measurements of Loy Yang brown coal char particles (88 μm median size) over the temperature range 940–1420 K yielded a chemical rate coefficient Rc, expressed as R c = 12.6 exp [ −68.3 (RT p )] kg m 2 s ( kPa O 2 ) 0.4 . Particle size and density decreased with burn off, but in an unusual manner that requires further investigation. The value of the activation energy, the manner of change in size, and density of the particles during combustion, and the observed order in oxygen (0.4), suggest that the burning rate was controlled by the combined effects of pore diffusion and chemical reaction, with a tendency for chemical reaction to dominate.

B. C. Young | I. Smith | Ian W. Smith

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