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Numerical simulation: preparation of La2O3 in a jet pyrolysis reactor

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Abstract

Based on the technique for preparing LaCl3 via direct pyrolysis of rare earth chloride solution, a jet pyrolysis reactor was designed and the intra-reactor temperature and chemical reactions were numerically simulated using computational fluid dynamics (CFD) technique. The results show that the flow rate variation at the fuel inlet does not largely affect the temperature in the reactor, while the increase in external pressure at the material inlet rapidly decreases the average temperature, Venturi temperature, and outlet temperature. The CH4 and O2 inside the reactor are combusted completely, and when the material inlet pressure is <90 Pa, the LaCl3 is fully pyrogenated. The contents of CO2, La2O3, and HCl fluctuate near the Venturi tube and finally stabilize. La2O3 content at the outlet is in a top-to-bottom gradient.

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Acknowledgments

This study was financially supported by the National Natural Science Foundation of China (Nos. 51204040 and U1202274), the National Science and Technology Support Program (No. 2012BAE01B02), and the Fundamental Research Funds for the Central Universities (Nos. N130702001 and N130402012).

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Authors and Affiliations

  1. Key Laboratory of Ecological Utilization of Multi-metal Intergrown Ores of Ministry of Education, School of Materials and Metallurgy, Northeastern University, Shenyang, 100819, China

    Chao Lv, Zi-Mu Zhang, Qiu-Yue Zhao, Zhi-He Dou, Ting-An Zhang & Hong-Liang Zhao

  2. Department of Mathematics, Northeast Petroleum University at Qinhuangdao, Qinhuangdao, 066004, China

    Chao Lv

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  1. Chao Lv
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  2. Zi-Mu Zhang
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  3. Qiu-Yue Zhao
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  5. Ting-An Zhang
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  6. Hong-Liang Zhao
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Correspondence to Ting-An Zhang.

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Lv, C., Zhang, ZM., Zhao, QY. et al. Numerical simulation: preparation of La2O3 in a jet pyrolysis reactor. Rare Met. 34, 600–606 (2015). https://doi.org/10.1007/s12598-015-0535-0

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  • DOI: https://doi.org/10.1007/s12598-015-0535-0

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