A mechanistic model for the softening of coking coal and its use for predicting the dilatation of blends

Title: A mechanistic model for the softening of coking coal and its use for predicting the dilatation of blends
Creator: Jenkins, David R.; Mahoney, Merrick R.
Relation: Fuel Vol. 153, p. 585-594
Publisher Link: http://dx.doi.org/10.1016/j.fuel.2015.02.116
Publisher: Elsevier
Resource Type: journal article
Date: 2015
Description: Models of gas evolution and gas transport within softened coal particles, combined with bubble growth within the particles and gas flow between the particles, are used to develop a phenomenological model of the process of contraction and dilatation of coal samples in a dilatometer test. The model is fitted to dilatometer curves for a range of different coals, in order to determine unknown parameters of the model. The model is shown to provide excellent fits to the measured data for these coals, validating the assumptions underlying it. Finally, the model is used to predict the dilatation of blends. The comparison of the predictions with measured dilatation of blends is good for some cases, but there are discrepancies when non-expanding coals comprise a significant proportion of the blend. A hypothesis for the effect of the non-expanding coals upon the dilatation is proposed.
Subject: coking coal; dilatation; mathematical model; gas
Identifier: http://hdl.handle.net/1959.13/1321479
Identifier: uon:24371
Identifier: ISSN:0016-2361
Language: eng
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