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Effects of different draft baffles on the hydrodynamics in internal-loop airlift reactors

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Abstract

In this paper, a 2-D airlift reactor was developed. The streamline and hydrodynamic parameters were measured in a 2-D airlift loop reactor(ALR)with different draft baffles. Three regimes were observed under different conditions. Particle image velocimetry(PIV)measurement showed that the liquid velocity distribution in horizontal direction presented different profiles in the three regimes. The length, the height and the spacing of draft baffles were applied in the experiments to optimize the ALR structure. It was found that the draft tube structure is of great importance in determining the hydrodynamics of ALRs. Additionally, the experimental results may serve as a step to the further optimization and design of ALR.

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References

  1. Bennett G F, Peters R W. The removal of oil from wastewater by air flotation: A review [J]. Crit Rez Env Sci Technol, 1988, 18(3): 189–253.

    Google Scholar 

  2. Siegel M H, Robinson C W. Application of airlift gasliquid-solid reactors in biotechnology [J]. Chem Eng Sci, 1992, 47(13/14): 3215–3229.

    Article  Google Scholar 

  3. Yu W, Wang T F, Liu M L et al. Liquid backmixing and particle distribution in a novel multistage internal-loop airlift slurry reactor[J]. Ind Eng Chem Res, 2008, 47(11): 3974–3982.

    Article  Google Scholar 

  4. Wang T F, Wang J F, Jin Y. Slurry reactors for gas-to-liquid processes: A review [J]. Ind Eng Chem Res, 2007, 46(18): 5824–5847.

    Article  MathSciNet  Google Scholar 

  5. Chisti M Y, Halard B, Moo-Young M. Liquid circulation in airlift reactors [J]. Chem Eng Sci, 1988, 43(3): 451–457.

    Article  Google Scholar 

  6. Merchuk J C, Siegel M H. Air-lift reactors in chemical and biological technology [J]. Chem Technol Biotechnol, 1988, 41(2): 105–120.

    Article  Google Scholar 

  7. Albijanic B, Havran V, Petrovic D L et al. Hydrodynamics and mass transfer in a draft tube airlift reactor with dilute alcohol solutions [J]. AIChE J, 2007, 53(11): 2897–2904.

    Article  Google Scholar 

  8. Blažej M, Kiša M, Markoš J. Scale influence on the hydrodynamics of an internal loop airlift reactor [J]. Chem Eng Process, 2004, 43(12): 1519–1527.

    Article  Google Scholar 

  9. Deng Z H, Wang T F, Zhang N et al. Gas holdup, bubble behavior and mass transfer in a 5 m high internal-loop airlift reactor with non-Newtonian fluid [J]. Chem Eng J, 2010, 160(2): 729–737.

    Article  MathSciNet  Google Scholar 

  10. Mohanty K, Das D, Biswas M N. Hydrodynamics of a novel multi-stage external loop airlift reactor [J]. Chem Eng Sci, 2006, 61(14): 4617–4624.

    Article  Google Scholar 

  11. Klein J, Godo Š, Dolgoš O et al. Effect of a gas-liquid separator on the hydrodynamics and circulation flow regimes in internal-loop airlift reactors [J]. J Chem Technol Biotechnol, 2001, 76(5): 516–524.

    Article  Google Scholar 

  12. Šijacki I M, Tokic MS, Kojic P S et al. Sparger type influence on the hydrodynamics of the draft tube airlift reactor with diluted alcohol solutions [J]. Ind Eng Chem Res, 2011, 50(6): 3580–3591.

    Article  Google Scholar 

  13. Hwang S J, Cheng Y L. Gas holdup and liquid velocity in three-phase internal-loop airlift reactors [J]. Chem Eng Sci, 1997, 52(21/22): 3949–3960.

    Article  Google Scholar 

  14. Lin T J, Chen P C. Studies on hydrodynamics of an internal-loop airlift reactor in gas entrainment regime by particle image analyzer [J]. Chem Eng J, 2005, 108(1): 69–79.

    Article  Google Scholar 

  15. Chen R C, Reese J, Fan L S. Flow structure in a threedimensional bubble column and three-phase fluidized bed [J]. AIChE J, 1994, 40(7): 1093–1104.

    Article  Google Scholar 

  16. Dong M Z, Wang Y, Jiang N T. An experimental method for evaluating the PIV measurement error and its application in optimizing PIV experiment parameters [J]. Journal of Experiments in Fluid Mechanics, 2005, 19(2): 79–83(in Chinese).

    MathSciNet  Google Scholar 

  17. Fadavi A, Chisti Y. Gas holdup and mixing characteristics of a novel forced circulation loop reactor [J]. Chem Eng J, 2007, 131(1-3): 105–111.

    Article  Google Scholar 

  18. Heijnen J J, Hols J, Van Der Lans R et al. A simple hydrodynamic model for the liquid circulation velocity in a fullscale two-and three-phase internal airlift reactor operating in the gas recirculation regime [J]. Chem Eng Sci, 1997, 52(15): 2527–2540.

    Article  Google Scholar 

  19. Bakker W A M, Van Can H J L, Tramper J et al. Hydrodynamics and mixing in a multiple air-lift loop reactor [J]. Biotechnol Bioeng, 1993, 42(8): 994–1001.

    Article  Google Scholar 

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Authors and Affiliations

  1. School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China

    Siyuan Qie  (郄思远), Fei Gao  (高 飞), Chen Liu  (刘 晨), Zheqing Huang  (黄哲庆) & Chunjiang Liu  (刘春江)

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  1. Siyuan Qie  (郄思远)
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  2. Fei Gao  (高 飞)
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  3. Chen Liu  (刘 晨)
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  4. Zheqing Huang  (黄哲庆)
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  5. Chunjiang Liu  (刘春江)
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Corresponding author

Correspondence to Zheqing Huang  (黄哲庆).

Additional information

Supported by the National Natural Science Foundation of China (No. 21406157).

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Qie, S., Gao, F., Liu, C. et al. Effects of different draft baffles on the hydrodynamics in internal-loop airlift reactors. Trans. Tianjin Univ. 21, 446–452 (2015). https://doi.org/10.1007/s12209-015-2513-x

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  • DOI: https://doi.org/10.1007/s12209-015-2513-x

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