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Liquefaction of partially dried and oxidized coals: 3. Liquefaction results

✍ Scribed by Donald C. Cronauer; Raffaele G. Ruberto; Richard S. Silver; Robert G. Jenkins; Alan Davis; David S. Hoover

Publisher: Elsevier Science
Year: 1984
Tongue: English
Weight: 856 KB
Volume: 63
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(84)90258-8

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✦ Synopsis

Samples of partially dried and oxidized

Belle Ayr subbituminous coal were liquefied in a recycle donor solvent (SK-II heavy distillate) to observe the effect of coal pretreatment on conversion. Because subbituminous coals have moisture contents typically > 25%, it would appear useful to dry these coals prior to liquefaction; however, the drying of Belle Ayr coal, either in nitrogen or oxygen-containing gases, resulted in a significant decrease in yields of liquefied coal products. The liquefaction residues recovered from these runs were examined by optical microscopy and were found to contain high levels of coke. This coke appeared to have formed by polymerization of coal-derived liquid products.

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