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Design and analysis of a novel furnace throat for removing dust particles in flue gas emitted from copper smelting furnace by a computational method

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Abstract

A novel furnace throat structure was designed to reduce dust particle concentration in the flue gas emitted from the copper smelting industry. A two-stage turbulence model of the furnace throat based on the RNG k-ε model combined with the stochastic trajectory model was developed to analyze the gas flow and particle trajectories in this furnace throat structure. The resulting turbulent flow fields and particle trajectories under different operating conditions were shown and discussed. It indicates that the furnace throat plays an important role in separating the dust particles from the flue gas by applying centrifugal force and subsequent resistance force. Moreover, the effects of the radius of the inner flue, the number of the spiral plate, and the number of the spiral plate turns on the particle collection efficiency were analyzed to optimize the throat structure. The simulation results show that the furnace throat with inner flue radius of 0.05 m, two spiral plates, and two spiral plate turns has the highest particle collection efficiency. Furthermore, a series of experimental tests were conducted to validate the accuracy of the simulation results, and the measured experimental data show a good correlation with the numerical results.

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Funding

This work was financially supported by a key project of the National Natural Science Foundation of China (2017YFC0210405).

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Authors and Affiliations

  1. School of Metallurgy and Environment, Central South University, Changsha, 410083, China

    Zhihui Yang, Ken Li, Weizhi Zeng, Bo Li & Shan Liu

  2. Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, China

    Zhihui Yang & Weizhi Zeng

Authors
  1. Zhihui Yang
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  2. Ken Li
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  3. Weizhi Zeng
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  4. Bo Li
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  5. Shan Liu
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Correspondence to Weizhi Zeng.

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Responsible editor: Philippe Garrigues

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Yang, Z., Li, K., Zeng, W. et al. Design and analysis of a novel furnace throat for removing dust particles in flue gas emitted from copper smelting furnace by a computational method. Environ Sci Pollut Res 26, 27180–27197 (2019). https://doi.org/10.1007/s11356-019-05866-9

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