✦ LIBER ✦

Temperature dependence of crosslinking processes in pyrolysing coals

✍ Scribed by Eric M. Suuberg; Doyoung Lee; John W. Larsen

Publisher: Elsevier Science
Year: 1985
Tongue: English
Weight: 513 KB
Volume: 64
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(85)90391-6

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✦ Synopsis

Changes in the macromolecular structure of a lignite and a bituminous coal during rapid pyrolysis in the temperature range 30&1200 K are described. Solvent swelling techniques have clearly demonstrated that crosslinking occurs in lignites at somewhat lower pyrolysis temperatures than it does in bituminous coals. The onset of the crosslinking processes in bituminous coals coincides with the end of the tar formation period. In lignites, crosslinking occurs very early in the pyrolysis process, coinciding with low temperature release of CO,. The presence ofnatural

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