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Research and Application Progress of Microchemical Technology
Xin Jing, Zhu Yuanbao, Hu Miao, Zhang Haihong, Song Yu
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Microchemical technology is a front technology of multi⁃disciplines in chemical engineering fields. The technology core is microscale transfer and chemical reaction in microchannel reactor. The application of microchemical technology can improve resource⁃utilization efficiency for energy saving and consumption reduction, enhance security, intensification and miniaturization of the chemical process, by decreasing dispersion scale, strengthening mixing and transfer, raising control and efficiency. The technology principle, characteristics, advantage and industrial application of microchemical technology were introduced, with the aim of deepening people's understanding of the microchemical technology, and then promoting the development and application of microchemical technology.
2020, 33 (5): 8-13.
DOI:
10.3969/j.issn.1006-396X.2020.05.002
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Comparative Analysis of Coke Suppression Effect of Mo⁃Based Catalysts
Zhang Haihong,Xin Jing,Han Longnian,Tian Yibin,Hou Zhanggui
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MoS2 (labeled as MoS2⁃1 and MoS2⁃2) was prepared by in⁃situ decomposition of water⁃soluble molybdenum⁃based catalyst and oil⁃soluble molybdenum⁃based catalyst.In order to explore the effect of two types of molybdenum catalyst in slurry⁃bed hydrocracking and preliminary theoretical analysis,the catalysts were characterized by XRD analysis,particle size analysis,SEM analysis and evaluation of reaction performance.Autoclave evaluation results showed that,compared with adding oil⁃soluble catalysts,the transformation rate and coke yield rate were better than that by adding water⁃soluble catalyst.The results of XRD analysis showed that the crystalline state of MoS2⁃1 was poor.The characteristic peaks of MoS2⁃2 were sharp and the crystalline state was good,so the hydrogen could be activated to activate hydrogen and the coke yield rate was reduced.The results of SEM analysis and particle size analysis showed that the MoS2⁃2 was smaller and the diameter was mainly 1~5 μm.MoS2⁃1 was larger and the diameter was mainly 6~10 μm.MoS2⁃2 catalyst had smaller particle size and uniform particle size distribution which could provide more hydrogenation active centers to improve the conversion rate of the reaction.
2019, 32 (1): 19-23.
DOI:
10.3969/j.issn.1006-396X.2019.01.004