Valuable Products from Coal Tar

Vetoshkina, I. S.; Solodov, V. S.; Subbotin, S. P.; Васильева, Е. В.; Cherkasova, T. G.; Nevedrov, A. V.

doi:10.3103/s1068364x1902011x

Cited by 5 publications

(3 citation statements)

References 2 publications

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“…Coal tar pitch was a kind of heavy residue material after distilling and extracting light component from coal tar, and it was generally divided into high-temperature coal tar pitch, coal liquefaction pitch, and mediumlow-temperature coal tar pitch with different sources. 1 Coal tar pitch was generally accepted as the suitable precursor to produce artificial carbon materials (such as graphite electrode, 2 carbon anode, [3][4][5][6] carbon fiber, [7][8][9] porous carbon, 10,11 and carbon composite materials) [12][13][14] with the characteristics of high carbon content, low ash content, and high carbon residual value. 15 Medium-low-temperature coal tar pitch (MLP) was a large number of by-products in the process of preparing semicoke by pyrolysis of low-rank coal.…”

Section: Introductionmentioning

confidence: 99%

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Separation and thermal conversion of group components from medium‐low‐temperature coal tar pitch

Zhang

Zhu

et al. 2023

Asia-Pacific J Chem Eng

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Medium‐low‐temperature coal tar pitch (MLP) is a complex mixture of varied heavy organic hydrocarbons, which was generally used as the raw materials to produce artificial carbon materials. It was great significance for the high value‐added utilization of MLP to understand the property of components of MLP. The methanol, n‐heptane, n‐butanol, and dimethyl sulfoxide were used as the solvents to separate the components from medium‐low‐temperature coal tar pitch, and the eight kinds of components (include four kinds of solubles and four kinds of insolubles) were obtained after solvent separation. In addition, the liquid phase carbonization and calcination of medium‐low‐temperature coal tar pitch and its group components were carried out to obtain the corresponding pitch coke. The structural properties of components and pitch cokes have been studied in detail by FTIR, 1H‐NMR, TGA, optical microscope, scanning electron microscope, Raman spectrum, and X‐ray diffraction. The results showed that the optical microstructure of pitch coke prepared from the soluble group components of n‐heptane was mainly fibrous structure and leaflet structure, and the content can reach as 72.83%. In other words, the soluble group composition of n‐heptane was a suitable and excellent precursor for the production of needle coke. The optical microstructure of DMSOS‐C and HI‐C was only composed of fine mosaic structure, which was more suitable for the production of isotropic coke (a kind of special coke and also named as fine mosaic coke).

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Section: Introductionmentioning

confidence: 99%

“…1 H-NMR spectra of (a) MLP and (b) distribution of f a .T A B L E 9 Hydrogen distribution of MLP and group components.…”

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confidence: 99%

Separation and thermal conversion of group components from medium‐low‐temperature coal tar pitch

Zhang

Zhu

et al. 2023

Asia-Pacific J Chem Eng

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“…Эти процессы базируются на превращении высокомолекулярных веществ органиче ской массы углей под действием факторов, вызывающих их разрушение (температура, давление, действие раство рителей) с образованием веществ с более низкой моле кулярной массой. Преимуществами данной технологии являются простота технологического оформления, от сутствие необходимости использовать дорогостоящие катализаторы [10].…”

Section: Introductionunclassified