Seam coal, comparison

Mukhopadhyay, P.K., Goodarzi, F Crandlemire, A.L. et al. (1998) Comparison of coal composition and elemental distribution in selected seams of the Sydney and Stellarton Basins, Nova Scotia, eastern Canada. International Journal of Coal Geology, 37(1-2), 113-41. 

H-Coal naphthas and distillates derived from Illinois No. 6 (Burning Star Mine) and Wyodak coals were supplied by Hydrocarbon Research, Inc. The naphthas and distillates were blended in the appropriate proportions to obtain a whole syncrude derived from each coal. Properties of these syncrudes are shown in Table I. For comparison, Table I also shows properties of the SRC-II syncrude used in the study described in the previous chapter. The SRC-II syncrude was derived from a West Virginia coal (Pittsburgh Seam, Blacksville No. 2 Mine of the consolidated Coal Company). The H-Coal and SRC-II syncrudes are not directly comparable because the coals used to derive these syncrudes differ. 

Comparison of the organosulfur compounds produced by pyrolysis of eastern Oklahoma coals from within one seam shows that lower rank (lower calorific value) coals consistently yield high concentrations of thiophenes relative to benzo- and dibenzothiophenes. Pyrolysates of higher rank coals contain lower concentrations of organosulfur compounds than coals of lower rank and are dominated by dibenzothiophenes. Coals of similar rank (e.g. 517 and 512) from different seams yield markedly different distributions of organosulfur compounds upon pyrolysis, suggesting that the distribution is controlled by source material as well as maturity. 

Figure 7. Comparison of the thermal oxidative degradation of oxydesulfurized Indiana Minshall Seam (HvCb) coal in oxygen and air...

Figure 9. Comparison of inverse gas chromatography data from the Bruceton coal with microdilatometer measurements of a coal from the same seam (data from ref. 24).

A series of experiments was assigned to explore the extraction of mineral matter from coal in the size ranges below 0.25 mm. The raw coal samples were obtained from three different sources in the Pittsburgh seam which permitted a degree of comparison over a rather large geographic area. The results are interesting in that they allow a new perspective in the demineralization of coal. 

Gunter. B. 2002. Enhanced coalbed methane recovery and CO2 storage simulation issues and model comparisons. Present status and perspective of CO2 sequestration in coal seam Proc. Intern. Workshop, Tokyo, 5-6 September 2002. JCOSC JCOAL. 

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