Relationship between hydrogenation degree and pyrolysis performance of jet fuel

doi:10.1016/j.cjche.2024.01.003

Chinese Journal of Chemical Engineering ›› 2024, Vol. 68 ›› Issue (4): 35-42.DOI: 10.1016/j.cjche.2024.01.003

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Relationship between hydrogenation degree and pyrolysis performance of jet fuel

Qing Liu^1,2,3, Tinghao Jia⁴, Lun Pan^1,2,3, Jijun Zou^1,2,3, Xiangwen Zhang^1,2,3

1. Key Laboratory for Green Chemical and Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2. Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China;
3. Zhejiang Institute of Tianjin University, Ningbo 315201, China;
4. Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China

Received:2023-06-25 Revised:2023-12-19 Online:2024-06-28 Published:2024-04-28
Contact: Lun Pan,E-mail address:panlun76@tju.edu.cn;Xiangwen Zhang,E-mail address:zhangxiangwen@tju.edu.cn
Supported by:
The authors appreciate the financial support from National Key Research and Development Program of China (2021YFC2103701), the National Postdoctoral Program of China (GZB20230630) and the National Natural Science Foundation of China (22208295).

Relationship between hydrogenation degree and pyrolysis performance of jet fuel

Qing Liu^1,2,3, Tinghao Jia⁴, Lun Pan^1,2,3, Jijun Zou^1,2,3, Xiangwen Zhang^1,2,3

1. Key Laboratory for Green Chemical and Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2. Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China;
3. Zhejiang Institute of Tianjin University, Ningbo 315201, China;
4. Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China

通讯作者: Lun Pan,E-mail address:panlun76@tju.edu.cn;Xiangwen Zhang,E-mail address:zhangxiangwen@tju.edu.cn
基金资助:
The authors appreciate the financial support from National Key Research and Development Program of China (2021YFC2103701), the National Postdoctoral Program of China (GZB20230630) and the National Natural Science Foundation of China (22208295).

Abstract

Abstract: Understanding the relationship between the chemical composition and pyrolysis performance of endothermic hydrocarbon fuel (EHF) is of great significance for the design and optimization of advanced EHFs. In this work, the effect of deep hydrogenation on the pyrolysis of commercial RP-3 is investigated. Fuels with different hydrogenation degrees were obtained by the partially and completely catalytic hydrogenation and their pyrolysis performances were investigated using an apparatus equipped with an electrically heated tubular reactor. The results show that with the increase of hydrogenation degree, fuel conversion almost remains constant during the pyrolysis process (500-650 ℃, 4 MPa); however, the heat sink increases slightly, and the anti-coking performance significantly improves, which are highly related to their H/C ratios. Detailed characterisations reveal that the difference of the pyrolysis performance can be ascribed to the content of aromatics and cycloalkanes: the former are prone to initiate secondary reactions to form coking precursors, while the latter could act as the hydrogen donor and release hydrogen, which will terminate the radical propagation reactions and suppress the coke deposition. This work should provide the guidance for upgrading EHFs by modulating the composition of EHFs.

Key words: RP-3, Fuel, Pyrolysis, Hydrogenation, Deposition

摘要： Understanding the relationship between the chemical composition and pyrolysis performance of endothermic hydrocarbon fuel (EHF) is of great significance for the design and optimization of advanced EHFs. In this work, the effect of deep hydrogenation on the pyrolysis of commercial RP-3 is investigated. Fuels with different hydrogenation degrees were obtained by the partially and completely catalytic hydrogenation and their pyrolysis performances were investigated using an apparatus equipped with an electrically heated tubular reactor. The results show that with the increase of hydrogenation degree, fuel conversion almost remains constant during the pyrolysis process (500-650 ℃, 4 MPa); however, the heat sink increases slightly, and the anti-coking performance significantly improves, which are highly related to their H/C ratios. Detailed characterisations reveal that the difference of the pyrolysis performance can be ascribed to the content of aromatics and cycloalkanes: the former are prone to initiate secondary reactions to form coking precursors, while the latter could act as the hydrogen donor and release hydrogen, which will terminate the radical propagation reactions and suppress the coke deposition. This work should provide the guidance for upgrading EHFs by modulating the composition of EHFs.

关键词: RP-3, Fuel, Pyrolysis, Hydrogenation, Deposition

Qing Liu, Tinghao Jia, Lun Pan, Jijun Zou, Xiangwen Zhang. Relationship between hydrogenation degree and pyrolysis performance of jet fuel[J]. Chinese Journal of Chemical Engineering, 2024, 68(4): 35-42.

Qing Liu, Tinghao Jia, Lun Pan, Jijun Zou, Xiangwen Zhang. Relationship between hydrogenation degree and pyrolysis performance of jet fuel[J]. 中国化学工程学报, 2024, 68(4): 35-42.

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Relationship between hydrogenation degree and pyrolysis performance of jet fuel

Relationship between hydrogenation degree and pyrolysis performance of jet fuel

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