Heat-Pump Efficiency in Acetone-Methanol Extractive Distillation Depending on Feed Composition

A. S. Burachuk; Бурачук А. С.; E. A. Anokhina; Анохина Е. А.; A. V. Timoshenko; Тимошенко А. В.

doi:10.31857/S0040357123010025

Heat-Pump Efficiency in Acetone-Methanol Extractive Distillation Depending on Feed Composition

Authors: Burachuk A.S.¹, Anokhina E.A.¹, Timoshenko A.V.¹
Affiliations:
1. MIREA—Russian Technological University
Issue: Vol 57, No 1 (2023)
Pages: 22-37
Section: Articles
Published: 01.01.2023
URL: https://rjmseer.com/0040-3571/article/view/652907
DOI: https://doi.org/10.31857/S0040357123010025
EDN: https://elibrary.ru/BLXLQF
ID: 652907

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Abstract

The application of heat pumps in extractive distillation is studied on the example of the acetone–methanol mixture. The dependence of the efficiency on the feed mixture composition is investigated. It is found that the most effective in the whole range of feed compositions is the scheme with a heat pump in which the compressed overhead vapor of the regeneration column heats its own reboiler. A criterion for estimating the energy savings is suggested, based on which a number of efficiency conditions of heat-pump application both in extractive distillation and in distillation in general are formulated. Proceeding from the obtained results, a preliminary discrimination algorithm for versions of the distillation schemes with heat pumps is offered.

Keywords

heat pump, extractive distillation, energy saving

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