Heating patterns during carbonization of formed mixtures of coke and pitch

Coke-pitch mixtures formed into cylinders of different diameter were carbonized with various heating programmes to desired heat-treatment temperatures. The presence of cracks within the specimens after heat treatment was examined. The results revealed that the specimens fractured in the elastic stag...

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Bibliographic Details
Published inFuel (Guildford) Vol. 75; no. 7; pp. 809 - 815
Main Authors Fukai, Jun, Orita, Hisayuki, Yu, Xiaoshan, Isokawa, Isao, Miyatake, Osamu
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.05.1996
Elsevier
Subjects
Applied sciences
carbonization
Carbonization. Coking plant
Coal and derived products
coke-pitch mixtures
Energy
Exact sciences and technology
Fuels
Processing
thermal stress
coke-pitch mixtures
thermal stress
carbonization
Carbonization
Thermal stress
Viscoelasticity
Coke
Temperature effect
Cracking
Pitch coke
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Summary:Coke-pitch mixtures formed into cylinders of different diameter were carbonized with various heating programmes to desired heat-treatment temperatures. The presence of cracks within the specimens after heat treatment was examined. The results revealed that the specimens fractured in the elastic stage rather than in the viscoelastic stage and that thermal stress dominated the fracture of the specimens. Thermal stress was calculated to assess the fracture phenomena quantitatively. A heating programme suitable for the specimen prepared was evaluated. Comparison of the calculated value with the experimental results demonstrated the validity of the proposed method.
ISSN:0016-2361
1873-7153
DOI:10.1016/0016-2361(96)00033-6