COAL CHARACTERISTICS AND THEIR RELATIONSHIP TO COMBUSTION TECHNIQUES

Special Research Report SR-7 This report was recently presented at the 19 59 annual AIME Convention at San Francisco, California, as a technical paper. As this comprehensive review of the relationship of coal characteristics to combustion techniques may be of interest to the Pennsylvania Coal Industry, it is being issued as a Special Report to the Coal Research Section. This paper should also serve as a good general background and introduction to the ignitibility project. For example, it is obvious that the significance of ignitibility will vary somewhat with the method of firing. Hence, in the past, methods of calibrating ignitibility in the laboratory have not been very successful in predicting across the board combustion performance. Perhaps it may be 11;ecessary to use one type of ignitibility test for fuel bed combustion and others for pulverized or cyclone firing.