Journal
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
Volume 104, Issue -, Pages 625-631Publisher
ELSEVIER
DOI: 10.1016/j.jaap.2013.05.004
Keywords
Lignite; Low-temperature pyrolysis; Gaseous products
Funding
- National Basic Research Program of China [2012CB723105]
- National Science & Technology Pillar Program [2012BAA04B03]
- Natural Science Foundation of China [21006066, 51274147]
- Shanxi Provincial Natural Science Foundation [2011021009-2]
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The results of low-temperature pyrolysis of lignite are presented in this paper. The investigation focused on the effect of pyrolysis temperature on the gaseous product distribution, as well as morphological and structural variation. The gases evolved were analyzed by gas chromatography. Graphs of evolved gaseous components versus temperature were constructed to study their evolution characteristics. Morphological characteristics were observed at different pyrolysis temperatures. The semi-char surface had numerous bumps and hollows with deep cracks after low-temperature pyrolysis. The structural variation between the raw lignite and semi-char product was determined by Brunauer-Emmett-Teller techniques. The semi-char had well-developed flow structures with irregular shapes and appeared fairly molten, which indicated structural change during the evolution of the gaseous products. (C) 2013 Elsevier B.V. All rights reserved.
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