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Oxidation studies on coking coal related to weathering: Part 2. The distribution of absorbed oxygen in the products resulting from the pyrolysis of slightly oxidized coking coal

✍ Scribed by B.S. Ignasiak; D.M. Clugston; D.S. Montgomery

Publisher: Elsevier Science
Year: 1972
Tongue: English
Weight: 578 KB
Volume: 51
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(72)90043-9

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✦ Synopsis

A high-volatile A bituminous coal was oxidized with 180, at 1OO'C for 72 h to simulate weathering, and subsequently pyrolysed at various temperatures to drive off C180,, C1801%, C1%,, C180, C160, Hz180, Hz'%.

These gases were subsequently analysed by massspectrometry. The results indicate that 60% of the 1802 was found in the tar + water fraction. The implication is that, if mild weathering occurs, sufficient oxygen crossfinks are introduced to have a profound influence on the physical properties of the molten coal, such as the dilatation.

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