Formation of pyrolytic carbon in a continuous reactor for coal hydrogenation

Microscopic examination of blockage material from the CSIRO laboratory-scale continuous reactor for coal hydrogenation has indicated the presence of pyrolytic carbon. Both the morphology and abundance of pyrolytic carbon were variable. In some samples pyrolytic carbon spheres (≈ 1 μm) formed large d...

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Bibliographic Details
Published in:Fuel (Guildford) 1984-01, Vol.63 (2), p.169-173
Main Authors: Shibaoka, Michio, Foster, Neil R., Okada, Kiyofumi, Clark, Keith N.
Format: Article
Language:English
Subjects:
Applied sciences
coal
Energy
Exact sciences and technology
Fuel processing. Carbochemistry and petrochemistry
Fuels
hydrogenation
pyrolytic carbon
Solid fuel processing (coal, coke, brown coal, peat, wood, etc.)
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Summary:Microscopic examination of blockage material from the CSIRO laboratory-scale continuous reactor for coal hydrogenation has indicated the presence of pyrolytic carbon. Both the morphology and abundance of pyrolytic carbon were variable. In some samples pyrolytic carbon spheres (≈ 1 μm) formed large deposits with clear zonal texture. Spherical agglomerates (up to 70 μm) of these particles, and large particles were also observed. In some cases spherulitic pyrolytic carbon was embedded in vitroplast and/or mesophase. The occurrence of pyrolytic carbon in continuous reactors for coal hydrogenation is significant as it can provide, in the absence of other information, a posteriori indication of undesirable reaction conditions, i.e. large gas hold-ups and localized overheating.
ISSN:0016-2361
1873-7153
DOI:10.1016/0016-2361(84)90031-0