MATEC Web Conf.
Volume 115, 2017XXXIII Siberian Thermophysical Seminar (STS-33)
|Number of page(s)||4|
|Section||Chapter 8 Heat and mass transfer at phase changes and low-temperature thermophysics|
|Published online||10 July 2017|
Effect of the structured packing height on efficiency of freons mixture separation in a large-scale model of distillation column
Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, 1 Lavrentyev Ave., Novosibirsk, 630090, Russia
* Corresponding author: email@example.com
Results of experimental studies of heat-and-mass transfer and hydrodynamic processes at distillation on a regular packing are presented. The mixture of freons R114–R21 at the pressure of 0.3 MPa was used as a working mixture. The mixture was separated on the Mellapak 350Y structured packing with the diameter of 0.9 m under the conditions of complete reflux (L/V = 1) at different packing heights. A specially designed liquid distributor with a possibility to change the density and pattern of drip points was used to irrigate the packing. The experimental data on the efficiency of mixture separation (height of transfer unit HTU) and distribution of the local flow rate density over the column cross-section were compared. It is shown that an increase in the height of the structured packing from 2.1 m to 4.0 m leads to a significant decrease in the efficiency of mixture separation in the distillation column.
© The Authors, published by EDP Sciences, 2017
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