Study on coal pyrolysis characteristics by combining different pyrolysis reactors

Xiaoping Su; Zhao Wang; Ning Li; Longjian Li; Ping Zhang; Ming Sun; Xiaoxun Ma

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Study on coal pyrolysis characteristics by combining different pyrolysis reactors

Updated：2026-01-06

- Study on coal pyrolysis characteristics by combining different pyrolysis reactors
- Chinese Journal of Chemical Engineering Vol. 76, Issue 12, Pages: 1-9(2024)
- Affiliations：
  
  1. School of Chemical Engineering, Northwest Minzu University, Key Laboratory of Environment-Friendly Composites of the State Ethnic Affairs Commission, Gansu Provincial Biomass Function Composites Engineering Research Center, Key Laboratory for Utility of Environment-Friendly Composites and Biomass in Universities of Gansu Province, Gansu Province Research Center for Basic Sciences of Surface and Interface Chemistry,Lanzhou,China,730030
  2. School of Chemical Engineering, Northwest University, International Science & Technology Cooperation Base of MOST for Clean Utilization of Hydrocarbon Resources, Chemical Engineering Research Center of the Ministry of Education for Advanced Use Technology of Shanbei Energy, Shaanxi Research Center of Engineering Technology for Clean Coal Conversion, Collaborative Innovation Center for Development of Energy and Chemical Industry in Northern Shaanxi,Xi'an,China,710069
- Author bio：
- Funds：
- DOI：
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- Published：2024
- Accepted：
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Xiaoping Su, Zhao Wang, Ning Li, Longjian Li, Ping Zhang, Ming Sun, Xiaoxun Ma. Study on coal pyrolysis characteristics by combining different pyrolysis reactors[J]. Chinese Journal of Chemical Engineering, 2024, 76(12): 1-9.
DOI：

Xiaoping Su, Zhao Wang, Ning Li, Longjian Li, Ping Zhang, Ming Sun, Xiaoxun Ma. Study on coal pyrolysis characteristics by combining different pyrolysis reactors[J]. Chinese Journal of Chemical Engineering, 2024, 76(12): 1-9. DOI：

摘要

Abstract

The pyrolysis process of Shendong coal (SD) was first studied by combining the characteristics of thermal gravimetric (TG)

pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and Gray-King assay (G-K). The results show that the order of coke yields is G-K (76.35% (mass))TG (73.11% (mass))Py (70.03% (mass)). G-K coke yield caused by condensation reaction and secondary reaction accounts for 3.08% (mass) and 3.24% (mass)

respectively. Compared with slow pyrolysis

fast pyrolysis has stronger fracture ability to coal molecules and can obtain more O-compounds

mono-ring aromatics and aliphatics. Especially

the content of phenolics increases significantly from 15.49% to 35.17%

but the content of multi-ring aromatics decreases from 23.13% to 2.36%. By comparing the compositions of Py primary tar and G-K final tar

it is found that secondary reactions occurred during G-K pyrolysis process include the cleavage of alkane and esters

condensation of mono-ring aromatics with low carbon alkene

ring opening

isomerization of tri-ring aromatics

hydrogenation of aromatics and acids.

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