Modification performance of Hypercoal as an additive on co-carbonization of coal

Hao, Li Fang; Feng, Ping; Song, Wen Li; Wei, Lin; Yoon, Seong Ho; Mochida, Isao

doi:10.1016/s1872-5813(12)60037-1

Cited by 9 publications

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is known that the caking properties of coal, such as dilatation and fluidity, are increased by the addition of coal tar pitch, 9,10) asphalt pitch (ASP), [10][11][12] solvent refined coal (SRC) 13,14) produced by thermally reacting coal with hydrogen solvent, hyper-coal, 15) and extracts from coal. [16][17][18] Among these additives, coal tar pitch is used as an industrial binder for briquetting 19) and is known to consist of various components such as polycyclic aromatic hydrocarbons (PAHs).…”

Section: Introductionmentioning

confidence: 99%

Effects of Hydrocarbon Addition on Increase in Dilatation of Coal

et al. 2019

View full text Add to dashboard Cite

The addition of coal tar pitch mainly composed of polycyclic aromatic hydrocarbons (PAHs), increases the dilatation of coal. We investigated the effect of PAHs on the maximum dilatation (MD) of hard coking coals and semi-soft coking coals. Twenty-six kinds of PAHs and aliphatic hydrocarbon were used as additive agents. The use of a PAH with a molecular weight in the range 152.19-178.23 as an additive agent almost unchanged the MD. When a PAH with a molecular weight in the range 178.23-378.47 was added to the coal, the MD of the coal increased. The increase in MD achieved with the addition of 9,10-dihydrophenanthrene was larger than that obtained with the addition of phenanthrene. This is likely because the hydrogen atoms in the ninth and tenth positions in 9,10-dihydrophenanthrene inhibit the polymerization of the coal structure. The MD was hardly affected by the addition of a linear aliphatic hydrocarbon (C 28 H 58) but MD decreased due to the addition of anthraquinone with carbonyl carbon. When a PAH with nonplanar structure was added to the coal, the increase in MD was smaller than when a PAH with planar structure was added.

show abstract