D. A. Ramochnikov, E. A. Anokhina, A. V. Saunina, A. V. Timoshenko
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Using Complex Columns with a Side Section and Side Withdrawal in Extractive Distillation of Methyl Acetate–Chloroform Mixtures of Different Compositions
The efficiency of using complex columns with a side section (SS) and side withdrawal (SW) in extractive distillation (ED) of methyl acetate–chloroform mixtures of three different compositions was studied. The optimal (according to the criterion of the total energy consumption in the column boilers) parameters of the conventional two-column scheme of extractive distillation, a complex column with a rectifying side section, and a scheme including a column with side withdrawal were determined. The energy efficiency of the columns with a side section and side withdrawal was found to be almost independent of the mixture composition. Both technological solutions provide almost the same (~30%) reduction of energy consumption in the column boilers compared to the conventional scheme, but the number of plates in the scheme including a complex column with side withdrawal is 30% larger than in the complex column with a side section. At the same total number of plates in the columns of all schemes, the energy saving due to the use of the column with side withdrawal is only 10–13%.
期刊介绍：
Theoretical Foundations of Chemical Engineering is a comprehensive journal covering all aspects of theoretical and applied research in chemical engineering, including transport phenomena; surface phenomena; processes of mixture separation; theory and methods of chemical reactor design; combined processes and multifunctional reactors; hydromechanic, thermal, diffusion, and chemical processes and apparatus, membrane processes and reactors; biotechnology; dispersed systems; nanotechnologies; process intensification; information modeling and analysis; energy- and resource-saving processes; environmentally clean processes and technologies.
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