Thermodynamics and kinetics insights into naphthalene hydrogenation over a Ni-Mo catalyst

doi:10.1016/j.cjche.2021.02.007

Chinese Journal of Chemical Engineering ›› 2021, Vol. 39 ›› Issue (11): 173-182.DOI: 10.1016/j.cjche.2021.02.007

• Catalysis, Kinetics and Reaction Engineering • Previous Articles Next Articles

Thermodynamics and kinetics insights into naphthalene hydrogenation over a Ni-Mo catalyst

Chong Peng^1,2,3, Zhiming Zhou², Xiangchen Fang³, Hualin Wang²

1 Panjin Institute of Industrial Technology, Dalian University of Technology, Panjin 116045, China;
2 East China University of Science and Technology, Shanghai 200237, China;
3 Dalian Research Institute of Petroleum and Petrochemicals, SINOPEC, Dalian 116045, China

Received:2020-12-13 Revised:2021-01-21 Online:2021-12-27 Published:2021-11-28
Contact: Hualin Wang
Supported by:
This work was financially supported by the National Natural Science Foundation of China (91934301), The China Postdoctoral Science Foundation (2019M661409 and 2020T130190), Doctoral Start-up Foundation of Liaoning Province (2019-BS-054), Liaoning Revitalization Talents Program (XLYC1807245), The Open Project of State Key Laboratory of Chemical Engineering (SKL-ChE- 18C04), and Dalian High-Level Talent Innovation Program (2017RQ085).

Thermodynamics and kinetics insights into naphthalene hydrogenation over a Ni-Mo catalyst

Chong Peng^1,2,3, Zhiming Zhou², Xiangchen Fang³, Hualin Wang²

1 Panjin Institute of Industrial Technology, Dalian University of Technology, Panjin 116045, China;
2 East China University of Science and Technology, Shanghai 200237, China;
3 Dalian Research Institute of Petroleum and Petrochemicals, SINOPEC, Dalian 116045, China

通讯作者: Hualin Wang
基金资助:
This work was financially supported by the National Natural Science Foundation of China (91934301), The China Postdoctoral Science Foundation (2019M661409 and 2020T130190), Doctoral Start-up Foundation of Liaoning Province (2019-BS-054), Liaoning Revitalization Talents Program (XLYC1807245), The Open Project of State Key Laboratory of Chemical Engineering (SKL-ChE- 18C04), and Dalian High-Level Talent Innovation Program (2017RQ085).

Abstract

Abstract: Hydrocracking represents an important process in modern petroleum refining industry, whose performance mainly relies on the identity of catalyst. In this work, we perform a combined thermodynamics and kinetics study on the hydrogenation of naphthalene over a commercialized NiMo/HY catalyst. The reaction network is constructed for the respective production of decalin and methylindane via the intermediate product of tetralin, which could further undergo hydrogenation to butylbenzene, ethylbenzene, xylene, toluene, benzene, methylcyclohexane and cyclohexane. The thermodynamics analysis suggests the optimum operating conditions for the production of monoaromatics are 400℃, 8.0 MPa, and 4.0 hydrogen/naphthalene ratio. Based on these, the influences of reaction temperature, pressure, hydrogen/naphthalene ratio, and liquid hourly space velocity (LHSV) are investigated to fit the Langmuir-Hinshelwood model. It is found that the higher temperature and pressure while lower LHSV favors monoaromatics production, which is insensitive to the hydrogen/naphthalene ratio. Furthermore, the high consistence between the experimental and simulated data further validates the as-obtained kinetics model on the prediction of catalytic performance over this kind of catalyst.

Key words: Thermodynamics and kinetics, Naphthalene hydrogenation, Monoaromatics, Operating condition, Kinetics model

摘要： Hydrocracking represents an important process in modern petroleum refining industry, whose performance mainly relies on the identity of catalyst. In this work, we perform a combined thermodynamics and kinetics study on the hydrogenation of naphthalene over a commercialized NiMo/HY catalyst. The reaction network is constructed for the respective production of decalin and methylindane via the intermediate product of tetralin, which could further undergo hydrogenation to butylbenzene, ethylbenzene, xylene, toluene, benzene, methylcyclohexane and cyclohexane. The thermodynamics analysis suggests the optimum operating conditions for the production of monoaromatics are 400℃, 8.0 MPa, and 4.0 hydrogen/naphthalene ratio. Based on these, the influences of reaction temperature, pressure, hydrogen/naphthalene ratio, and liquid hourly space velocity (LHSV) are investigated to fit the Langmuir-Hinshelwood model. It is found that the higher temperature and pressure while lower LHSV favors monoaromatics production, which is insensitive to the hydrogen/naphthalene ratio. Furthermore, the high consistence between the experimental and simulated data further validates the as-obtained kinetics model on the prediction of catalytic performance over this kind of catalyst.

关键词: Thermodynamics and kinetics, Naphthalene hydrogenation, Monoaromatics, Operating condition, Kinetics model

Chong Peng, Zhiming Zhou, Xiangchen Fang, Hualin Wang. Thermodynamics and kinetics insights into naphthalene hydrogenation over a Ni-Mo catalyst[J]. Chinese Journal of Chemical Engineering, 2021, 39(11): 173-182.

Chong Peng, Zhiming Zhou, Xiangchen Fang, Hualin Wang. Thermodynamics and kinetics insights into naphthalene hydrogenation over a Ni-Mo catalyst[J]. 中国化学工程学报, 2021, 39(11): 173-182.

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Thermodynamics and kinetics insights into naphthalene hydrogenation over a Ni-Mo catalyst

Thermodynamics and kinetics insights into naphthalene hydrogenation over a Ni-Mo catalyst

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