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Study on coal pyrolysis characteristics by combining different pyrolysis reactors

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Study on coal pyrolysis characteristics by combining different pyrolysis reactors
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.

Shendong coalDifferent pyrolysis reactorsPyrolysis process

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

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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 730030,China

School of Chemical Engineering,Northwest University,International Science & Te

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 710069,China

Shendong coal Different pyrolysis reactors Pyrolysis process

2024

10.1016/j.cjche.2024.08.004

中国化学工程学报(英文版)
中国化工学会

中国化学工程学报(英文版)

CSTPCDEI
影响因子：0.818
ISSN：1004-9541
年,卷(期)：2024.76(12)