INTERNAL ENERGY SAVING IN DISTILLATION COLUMNS WITH REAL PLATES AND IN FILLED DISTILLATION COLUMNS

М К Zakharov,N V Lobanov

doi:10.32362/2410-6593-2017-12-2-42-49

М К Zakharov, N V Lobanov

Open Access

https://doi.org/10.32362/2410-6593-2017-12-2-42-49

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Abstract

Perspective ways of power saving in the distillation of liquid mixtures are considered. The phenomenon of internal energy saving on theoretical plates is considered in detail. As shown in this article, the phenomenon depends on the number of theoretical plates in the rectifying and stripping sections of the column and also on the aggregative state of the feed mixture. The processes of heat and mass transfer on real plates with various values of efficiency factor are considered. Blocks of real plates equivalent to one theoretical stage, that is, blocks where the leaving flows of the liquid and vapor are in equilibrium, are isolated. Analogically, heat and mass transfer in apparatuses with a continuous phase contact having a layer height providing one theoretical plate is considered. It is proved that internal energy saving in filled rectifying columns with real plates also depends on the number of theoretical plates and the aggregative state of the initial mixture.

Highlights

Perspective ways of power saving in the distillation of liquid mixtures are considered
The phenomenon of internal energy saving on theoretical plates is considered in detail
As shown in this article, the phenomenon depends on the number of theoretical plates in the rectifying and stripping sections of the column and on the aggregative state of the feed mixture

Summary

Introduction

Perspective ways of power saving in the distillation of liquid mixtures are considered. It is proved that internal energy saving in filled rectifying columns with real plates depends on the number of theoretical plates and the aggregative state of the initial mixture. Анализ тепломассообмена на теоретических тарелках ректификационных колонн, выполненный в [13] с помощью диаграмм t – x, y и y – x, показал, что внутреннее энергосбережение на тарелках укрепляющей части колонны зависит от потока флегмы или, другими словами, от флегмового числа.

Results

Conclusion