Journal of Northeastern University(Natural Science) ›› 2022, Vol. 43 ›› Issue (6): 821-826.DOI: 10.12068/j.issn.1005-3026.2022.06.009

• Materials & Metallurgy • Previous Articles     Next Articles

Simulation Study on the Effect of Venturi Pyrolysis Reactor Structure on Flow Field

LYU Chao1,2, SUN Ming-he1, YIN Hong-xin1, LIU Fang1   

  1. 1. School of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China; 2. Qinhuangdao Campus, Northeast Petroleum University, Qinhuangdao 066004, China.
  • Revised:2021-06-07 Accepted:2021-06-07 Published:2022-07-01
  • Contact: LYU Chao
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Abstract: Due to uneven particle size in cerium oxide products prepared by Venturi pyrolysis reactor, it is necessary to optimize the structure of Venturi pyrolysis reactor to further strengthen the gas-solid mixing effect and the suction effect while improve the particle size distribution. The pyrolysis process of cerium chloride in Venturi reactor with nine different structures was studied by Euler-Euler multiphase flow and standard k-ε model with Fluent19.0 software. The gas-solid mixing and suction effect in Venturi reactor were analyzed. The results showed that the gas-solid mixing effect is best when the length of drainage tube is 35mm. The best suction capacity is obtained when the length of the drainage tube is 45mm. The gas-solid mixing effect is the best if the length of the throat tube is 150mm. The best suction capacity is achieved when the length of the throat tube is 100mm. When the ratio of diameter of expansion section to diameter of contraction section is 2∶2, the gas-solid mixing effect is the best, and the suction capacity is the best.

Key words: Venturi reactor; gas solid mixing; reverse suction; cerium oxide; numerical simulation

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