ADVANCED DIRECTIONS OF ENERGY SAVING IN THE PROCESSES OF MASS EXCHANGE BETWEEN LIQUID AND VAPOR

Authors

  • Yurii Buliy National University of Food Technologies, Kyiv, Ukraine
  • Oleksandr Obodovych Institute of Technical Thermophysics of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
  • Vitalii Sydorenko Institute of Technical Thermophysics of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
  • Tamila Sheiko Institute of Food Resources of National Academy of Agrarian Sciences of Ukraine, Kyiv, Ukraine

DOI:

https://doi.org/10.31073/foodresources2020-15-04

Keywords:

distillation, column, plate, purification, impurities, efficiency

Abstract

The subject of the studies was to determine the effect of controlled cycles of liquid retention on plates and its synchronous overflow from plate to plate along the entire height of the distillation column according to the program of the controller in the process of distillation of alcohol. The working body of the mass exchange column apparatus is contact devices for mass and heat exchange between steam and liquid (plates), the efficiency of which is assessed by the degree of separation of the mixture and the specific consumption of heating steam. The efficiency of stepwise phase contact is determined by the degree of achievement of phase equilibrium between liquid and vapor. Practically such balance on bubbling and failing plates is not reached. To increase the efficiency of standard installations, the consumption of heating steam is increased above the normative ones. The efficiency of the fusel oil and heads column is determined by the degree of release of the still residue from volatile impurities formed at all technological stages of production. The aim of the study was to study the efficiency of fusel oil and heads column and extractive distillation column of cyclic action, the degree of purification of ethyl alcohol during distillation of the main fraction and increase the efficiency of the distillation process by extending the residence time of liquid on plates of columns for contact with steam. The studies were performed on an experimental column of cyclic action with plates with a variable live cross-section. The analysis of the results showed that when the liquid is retained on the plates for up to 20 s, aldehydes, esters and atypical impurities, fusel oil alcohols are completely removed. The degree of extraction (α) of the upper intermediate impurities and methanol increased by 60%. The multiplicity of concentration (β) of major impurities increases by 33%, higher alcohols - by 69%, methanol - by 52%. Increasing the residence time of the brew on the plates of the experimental column to 12 s allows to increase the concentration of alcohol in the distillate to 63… 65% vol.

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References

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Published

2020-12-25

How to Cite

Buliy, Y., Obodovych, O., Sydorenko, V., & Sheiko, T. (2020). ADVANCED DIRECTIONS OF ENERGY SAVING IN THE PROCESSES OF MASS EXCHANGE BETWEEN LIQUID AND VAPOR. FOOD RESOURCES, 8(15), 32–40. https://doi.org/10.31073/foodresources2020-15-04

Issue

Vol. 8 No. 15 (2020): Food Resources

Section

Технічні науки

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