99/02901 Changes in the structure of coals of different rank due to oxidation-effects on pyrolysis behavior

• Publisher: Elsevier Science
• Year: 1999
• Weight: 200 KB
• Volume: 40
• Category: Article
• ISSN: 0140-6701
• DOI: 10.1016/s0140-6701(99)90856-1

✦ Synopsis

This paper describes the design and use of a tester developed to enable rapid-assessment of the handling characteristics of a coal, which is of importance for the smooth operation of a coal handling plant. The Edinburgh Cohesion Tester is for use of uniaxial unconfined compression of bulk solids. It was designed to be easy to use, portable, robust and relatively cheap. The tester undergoes rigorous testing including checking for test repeatability and sensitivity to the test operator. Additionally, the effects of various factors such as consolidation pressure, moisture content and particle size have been investigated. The results indicate great potential for this cohesion tester.

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Calculation of the Frank-Kamenetskii critical parameter for a cubic reactant shape from experimental results on bituminous coals Jones, J. C. Fuel, 1999, 78, (1) 89-91. Using results previously reported for the spontaneous heating of bituminous coals, the Frank-Kamenetskii parameter is calculated in respect of each for the cubic reactant assembly used in the original experimental work. Comparisons are made with the results of other attempts to obtain this quantity by means of ignition experiments.