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Occurrence of Large-Scale Maldistribution of Local Parameters of Mixture Flows across Cross Section of Structured Packing Distillation Column

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Journal of Engineering Thermophysics Aims and scope

Abstract

This paper presents experimental results on occurrence of large-scale maldistribution of parameters of liquid and vapor flows in a regular-packing distillation column. Experiments on separation of mixtures of R114/R21 freons were conducted in a Mellapak 350.Y packing of 0.9 m in diameter. Temperature distributions across column cross sections at different heights were obtained. The experimental studies revealed appearance of large-scale maldistribution of local parameters (temperature and density) across the cross section and height of distillation column when the concentration differential across the column height achieves certain values under conditions of negative stratification of vapor density. An estimative analysis of occurrence of large-scale unevenness under conditions of negative stratification of vapor flow density was done. The experimental data will serve as basis for calculating the efficiency of separation of mixtures in structured packings of column apparatuses to make allowance for the effects of the scale factor associated with large-scale maldistribution of local flow parameters.

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Funding

The study was carried out at Kutateladze Institute of Thermophysics SB RAS and financially supported by RFBR (project no. 19-58-18004-Bolgaria_a).

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Authors and Affiliations

  1. Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russian Federation

    A. N. Pavlenko, V. E. Zhukov, N. I. Pecherkin & E. Yu. Slesareva

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  1. A. N. Pavlenko
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  2. V. E. Zhukov
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  3. N. I. Pecherkin
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  4. E. Yu. Slesareva
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Correspondence to A. N. Pavlenko.

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Pavlenko, A.N., Zhukov, V.E., Pecherkin, N.I. et al. Occurrence of Large-Scale Maldistribution of Local Parameters of Mixture Flows across Cross Section of Structured Packing Distillation Column. J. Engin. Thermophys. 29, 195–204 (2020). https://doi.org/10.1134/S1810232820020010

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  • DOI: https://doi.org/10.1134/S1810232820020010

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