โ Scribed by Gerald P. Huffman; Naresh Shah; Frank E. Huggins; Leon M. Stock; Kuntal Chatterjee; John J. Kilbane II; Mei-In M. Chou; David H. Buchanan
No coin nor oath required. For personal study only.
Least square analysis of the X-ray absorption near edge structure (XANES) region of sulfur K edge X-ray absorption fine structure (XAFS) spectra can provide a quantitative analysis of both the organic and inorganic functional forms of sulfur in coal. In the current article, this method is applied to speciation of the sulfur forms in a number of desulfurized coals. The samples investigated include biologically desulfurized coals, samples subjected to selective chemical reactions, samples subjected to molten caustic leaching and specimens treated with boiling perchloroethylene. In all cases, analysis of XANES provides a reasonably quantitative speciation of the changes in the sulfur forms resulting from the various treatments.
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The charging process consists of moving a hopper vehicle to the charging position, charging coal (e.g. with belt feeder or screw feeder), then waste plastics, and finally covering with coal, and moving to the coke oven. Bal~z, P. et ,l. Fuel, 2001, 80, (5), 665-671. The aim of this work has been to
0 1 Solid fuels (preparation) compared to the use of water-only for the treatment of an easy-to-clean Illinois No. 6 fine coal sample. For a difficult-to-clean coal, the mass yield improvement was significantly greater at nearly 20% by wt. From the treatment of four different coal samples, organic e