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Interaction of bio-coke with different coal tar pitches

Huang Xianai, Kocaefe Duygu, Kocaefe Yasar S. et Bhattacharyay Dipankar. (2016). Interaction of bio-coke with different coal tar pitches. Fuel, 179, p. 179-192.

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URL officielle: https://doi.org/10.1016/j.fuel.2016.03.058

Résumé

The interactions of pyrolyzed and calcined bio-cokes with three coal tar pitches of different properties were studied using a sessile drop test at 170 °C. A model was employed to characterize and quantify the spreading and penetration of pitch into bio-coke bed. The pyrolyzed bio-cokes were produced from softwood materials by heat treatment at 426 °C. The calcined bio-cokes were produced by calcining the pyrolyzed bio-coke at 1200 °C. Optical microscope, SEM/EDS, XRD, and FTIR techniques were used to analyze the coke–pitch interface and study their interaction mechanisms. The results show that the wettability of bio-coke is related to both pitch and coke properties. It is found that the presence of small amount of uniformly distributed small size quinoline insolubles (QI) in pitch seems to help pitch spread and penetrate into the bio-coke bed. Besides, calcination changes the chemical structure of bio-coke, enriches its carbon (C%) content, increases its crystalline length (Lc), and lowers its wettability by pitch.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:179
Pages:p. 179-192
Version évaluée par les pairs:Oui
Date:Septembre 2016
Sujets:Sciences naturelles et génie > Génie > Génie des matériaux et génie métallurgique
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Mots-clés:Bio-coke, pitch, carbon anode, wettability, interaction, interface
Déposé le:15 mars 2019 01:32
Dernière modification:15 mars 2019 01:32
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