Research on coking performance of ethylene residue pitch components

ZHANG Tongtong; ZHU Huihui; ZHU Yaming; HU Chaoshuai; LV Jun; CHENG Junxia; BAI Yonghui; ZHAO Xuefei

doi:10.1016/S1872-5813(24)60435-4

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ZHANG Tongtong, ZHU Huihui, ZHU Yaming, HU Chaoshuai, LV Jun, CHENG Junxia, BAI Yonghui, ZHAO Xuefei. Research on coking performance of ethylene residue pitch components[J]. Journal of Fuel Chemistry and Technology. doi: 10.1016/S1872-5813(24)60435-4

Citation:

ZHANG Tongtong, ZHU Huihui, ZHU Yaming, HU Chaoshuai, LV Jun, CHENG Junxia, BAI Yonghui, ZHAO Xuefei. Research on coking performance of ethylene residue pitch components[J]. Journal of Fuel Chemistry and Technology. doi: 10.1016/S1872-5813(24)60435-4

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Research on coking performance of ethylene residue pitch components

doi: 10.1016/S1872-5813(24)60435-4

ZHANG Tongtong^1
,,
ZHU Huihui^1
,,
ZHU Yaming^{1
,
,},
HU Chaoshuai^{2
,
,},
LV Jun^3
,,
CHENG Junxia^1
,,
BAI Yonghui^4
,,
ZHAO Xuefei^{1
,
,}

1.
School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China
2.
Hebei Vocational University of Industry and Technology, Shijiazhuang 050091, China
3.
School of chemical Engineering, Qiqihar University, Qiqihar 161003, China
4.
State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Yinchuan 750021, China

Funds: The project was supported by National Natural Science Foundation of China (22208138), Foundation of Key Laboratory for Advanced Coal and Coking Technology of Liaoning Province (2023KFKT-01 and 2022KFKT10), and Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering (2022-K41).

Received Date: 2024-01-04
Accepted Date: 2024-02-04
Rev Recd Date: 2024-02-03

Available Online: 2024-04-24

Abstract

Abstract

Ethylene residue pitch (the heavy component in ethylene residue tar) was widely used as the preferred raw material for preparing petroleum based artificial carbon materials with the characteristics of high carbon content, high aromaticity, and low heteroatom (S, N) content. In order to a detailed study on the coking properties of ethylene residue pitch, 8 components of ethylene residue pitch (four soluble and four insoluble components) were obtained by extraction and separation method. Factually, methanol, n-butanol, n-hexane, and dimethyl sulfoxide were selected as the solvents to extract and separate the ethylene residue pitch. A series of petroleum based pitch coke were gained by the thermal conversion and carbonization treatment (thermal conversion temperature and carbonization temperature were 500 and 1400 ℃, respectively) of each pitch components. The basic physical properties of ethylene residue pitch components were studied using infrared spectroscopy, thermogravimetric analysis, and ¹H-NMR. The micro-structure of a series of petroleum based pitch coke was studied by polarizing microscopy, X-ray single crystal diffraction, Raman spectroscopy, scanning electron microscopy. The results shown that: The aromaticity of insoluble components in ethylene residue pitch is slightly higher than that of soluble components, and the branching chains of insoluble components are slightly less than those of soluble components. The microstrength of ethylene residue pitch coke obtained by thermal conversion and carbonization of insoluble components is higher than that of ethylene residue pitch coke obtained by soluble components, and the true density of ethylene residue pitch coke HS-C is as high as 2.0554 g/cm³.
- ethylene residue pitch,
- components,
- coking performance,
- pitch coke

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References(26)

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