Journal of engineering physics

, Volume 40, Issue 5, pp 515–520 | Cite as

Effect of feedpoint location for a binary mixture on the efficiency of separation in a thermal-diffusion column

  • G. D. Rabinovich
  • V. P. Ivakhnik
  • M. A. Bukhtilova


We show that there exists an optimal position of the feedpoint of a column at which the separation efficiency is maximum and for which, at the same time, the energy consumption is a minimum.


Energy Consumption Statistical Physic Binary Mixture Separation Efficiency Optimal Position 
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transfer of the target component

y=Hz/K, H, K

coefficient of the transfer equation ye=HL/K


height of the column

Hee/H,Hii/H, σe, σi

samples at the positive and negative ends of the column


vertical coordinate

c′, c″, c0

concentrations in the concentrating and stripping parts of the column and in the input flow, respectively

σoe + σi; qe, qi

degrees of separation in the concentrating and stripping parts of the column


dimensionless coordinate of the feedpoint of the mixture being separated




e, i

value of y at the positive and negative ends of the column


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Literature cited

  1. 1.
    A. M. Rozen, Theory of Separation of Isotopes in Columns [in Russian], Atomizdat, Moscow (1960).Google Scholar
  2. 2.
    C. Jones and W. Furry, Separation of Isotopes by the Method of Thermal Diffusion [Russian translation], IL, Moscow (1947).Google Scholar
  3. 3.
    G. D. Rabinovich, R. Ya. Gurevich, and G. I. Bobrova, Thermal-Diffusion Separation of Liquid Mixtures [in Russian], Nauka i Tekhnika, Minsk (1971).Google Scholar
  4. 4.
    V. P. Ivakhnik, P. I. Druzin, M. A. Bukhtilova, and G. D. Rabinovich, “Experimental investigation of the thermal-diffusion separation of petroleum products using the ATR-3 apparatus,” in: Investigation of Transfer Processes in Gases, Liquids, and Solids [in Russian], ITMO Akad Nauk BSSR, Minsk (1979), pp. 84–101.Google Scholar
  5. 5.
    A. V. Suvorov, G. D. Rabinovich, M. A. Bukhtilova, et al., “Fundamentals of the design of apparatuses for the separation of petroleum products by thermal diffusion,” in: Heat and Mass Transfer and the Transfer Properties of Substances [in Russian], ITMO Akad. Nauk BSSR, Minsk (1978), pp. 120–137.Google Scholar
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    G. D. Rabinovich, “Optimization of a thermal-diffusion column in a sampling regime,” Inzh.-Fiz. Zh.,31, No. 2, 258–263 (1976).Google Scholar

Copyright information

© Plenum Publishing Corporation 1981

Authors and Affiliations

  • G. D. Rabinovich
    • 1
  • V. P. Ivakhnik
    • 1
  • M. A. Bukhtilova
    • 1
  1. 1.A. V. Lykov Institute of Heat and Mass TransferAcademy of Sciences of the Belorussian SSRMinsk

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