Effect of tetralin on the reaction behavior of volatiles from pyrolysis of Naomaohu coal

LI Xiao-rong; JIN Xin; WANG Mei-jun; YAN Lun-jing; SHEN Yan-feng; KONG Jiao; WANG Jian-cheng; CHANG Li-ping; BAO Wei-ren

doi:10.1016/S1872-5813(21)60052-X

Volume 49 Issue 5

May 2021

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Article Navigation > Journal of Fuel Chemistry and Technology > 2021 > 49(5): 617-625

LI Xiao-rong, JIN Xin, WANG Mei-jun, YAN Lun-jing, SHEN Yan-feng, KONG Jiao, WANG Jian-cheng, CHANG Li-ping, BAO Wei-ren. Effect of tetralin on the reaction behavior of volatiles from pyrolysis of Naomaohu coal[J]. Journal of Fuel Chemistry and Technology, 2021, 49(5): 617-625. doi: 10.1016/S1872-5813(21)60052-X

Citation:

LI Xiao-rong, JIN Xin, WANG Mei-jun, YAN Lun-jing, SHEN Yan-feng, KONG Jiao, WANG Jian-cheng, CHANG Li-ping, BAO Wei-ren. Effect of tetralin on the reaction behavior of volatiles from pyrolysis of Naomaohu coal[J]. Journal of Fuel Chemistry and Technology, 2021, 49(5): 617-625. doi: 10.1016/S1872-5813(21)60052-X

Citation:

LI Xiao-rong, JIN Xin, WANG Mei-jun, YAN Lun-jing, SHEN Yan-feng, KONG Jiao, WANG Jian-cheng, CHANG Li-ping, BAO Wei-ren. Effect of tetralin on the reaction behavior of volatiles from pyrolysis of Naomaohu coal[J]. Journal of Fuel Chemistry and Technology, 2021, 49(5): 617-625. doi: 10.1016/S1872-5813(21)60052-X

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Effect of tetralin on the reaction behavior of volatiles from pyrolysis of Naomaohu coal

doi: 10.1016/S1872-5813(21)60052-X

LI Xiao-rong^{1, 2
,},
JIN Xin^{1, 2},
WANG Mei-jun^{1, 2
,
,},
YAN Lun-jing^{1, 2},
SHEN Yan-feng^{1, 2},
KONG Jiao^{1, 2},
WANG Jian-cheng^{1, 2},
CHANG Li-ping^{1, 2
,
,},
BAO Wei-ren^{1, 2}

1.
State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China
2.
Key Laboratory of Coal Science and Technology, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, China

Funds: The project was supported by National Key Research and Development Program of China (2016YFB0600302) and National Natural Science Foundation of China (22078224)

Received Date: 2020-12-31
Rev Recd Date: 2021-01-28

Available Online: 2021-03-30

Publish Date: 2021-05-28

Abstract

Abstract

The volatiles’ reaction has a significant influence on composition and coking behavior of tar during low-medium temperature pyrolysis of coal, which is closely related to the activity of volatiles and the content of components rich in hydrogen in the system. By introducing tetralin, the effect of reaction of volatiles generated by pyrolysis of Naomaohu coal on the product distribution and coke yield was explored at various temperatures using a two-stage fixed bed reactor. The tar composition was analyzed by a comprehensive two-dimensional gas chromatography/mass spectrometry. The results show that the yield of coke is higher at 400 ^oC due to the weaker reaction between volatiles and THN and tar condensation. As the temperature increases, the reaction between volatiles and THN intensifies, resulting in the decrease of liquid products yield and the increase of gas yield. According to the calculated and experimental values of the reaction products of volatiles and THN, it is found that the liquid products yield increases after the introduction of THN. The contents of aromatic hydrocarbons with 2−5 rings and coke both decrease. This indicates that the interaction between volatiles and THN promotes the α−H transfer of THN and provides more active hydrogen for the reaction system. Besides, the interaction between volatiles and THN is also beneficial to the formation of phenolic compounds and other oxygenated compounds, especially for polyphenols. The activity of volatiles during coal pyrolysis is related to oxygen-containing radicals, which have a strong bond with active hydrogen.
- Naomaohu coal,
- tetralin,
- volatiles’ reaction,
- tar,
- coke

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References(27)

References

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