chemicallytechFine Chemical TechnologiesТонкие химические технологии2410-65932686-7575MIREA – Russian Technological University (RTU MIREA).10.32362/2410-6593-2023-18-1-7-20chemicallytech-1928Research ArticleTHEORETICAL BASIS OF CHEMICAL TECHNOLOGYТЕОРЕТИЧЕСКИЕ ОСНОВЫ ХИМИЧЕСКОЙ ТЕХНОЛОГИИEnergy efficiency of diabatic distillation schemes for an acetone–toluene–n-butanol mixture with an entrainer in the first columnОценка энергетической эффективности схем неадиабатической ректификации смеси ацетон–толуол–н-бутанол с использованием экстрактивного агента в первой колоннеhttps://orcid.org/0000-0001-5844-549XКлаузнерП. С.KlauznerP. S.

Клаузнер Павел Сергеевич, к.т.н., ассистент кафедры химии и технологии основного органического синтеза

119571, Москва, пр-т Вернадского, д. 86

ResearcherID AAJ-7842-2021

Pavel S. Klauzner, Cand. Sci. (Eng.), Assistant, Department of Chemistry and Technology of Basic Organic Synthesis

86, Vernadskogo pr., Moscow, 119571

ResearcherID AAJ-7842-2021

klauzner@mirea.ruhttps://orcid.org/0000-0002-9892-7909РудаковД. Г.RudakovD. G.

Рудаков Данила Григорьевич, к.т.н., доцент кафедры химии и технологии основного органического синтеза

119571, Москва, пр-т Вернадского, д. 86

Scopus Author ID 37018548000, ResearcherID M-5241-2014

Danila G. Rudakov, Cand. Sci. (Eng.), Associate Professor, Department of Chemistry and Technology of Basic Organic Synthesis

86, Vernadskogo pr., Moscow, 119571

Scopus Author ID 37018548000, ResearcherID M-5241-2014

rudakov@mirea.ruАнохинаE. А.AnokhinaE. A.

Анохина Елена Анатольевна, д.т.н., профессор кафедры химии и технологии основного органического синтеза

119571, Москва, пр-т Вернадского, д. 86

Scopus Author ID 6701718055

ResearcherID E-5022-2016

Elena A. Anokhina, Dr. Sci. (Eng.), Professor, Department of Chemistry and Technology of Basic Organic Synthesis

86, Vernadskogo pr., Moscow, 119571

Scopus Author ID 6701718055, ResearcherID E-5022-2016

anokhina.ea@mail.ruhttps://orcid.org/0000-0002-6511-7440ТимошенкоА. В.TimoshenkoA. V.

Тимошенко Андрей Всеволодович, д.т.н., профессор кафедры химии и технологии основного органического синтеза

119571, Москва, пр-т Вернадского, д. 86

Scopus Author ID 56576076700

ResearcherID Y-8709-2018

Andrey V. Timoshenko, Dr. Sci. (Eng.), Professor, Department of Chemistry and Technology of Basic Organic Synthesis

86, Vernadskogo pr., Moscow, 119571

Scopus Author ID 56576076700, ResearcherID Y-8709-2018

timoshenko@mirea.ruИнститут тонких химических технологий им. М.В. Ломоносова ФГБОУ ВО «МИРЭА – Российский технологический университет»РоссияM.V. Lomonosov Institute of Fine Chemical Technologies, MIREA – Russian Technological UniversityRussian Federation202318032023181720Copyright © Klauzner P.S., Rudakov D.G., Anokhina E.A., Timoshenko A.V., 20232023Клаузнер П.С., Рудаков Д.Г., Анохина E.А., Тимошенко А.В.Klauzner P.S., Rudakov D.G., Anokhina E.A., Timoshenko A.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.finechem-mirea.ru/jour/article/view/1928Objectives

Objectives. To investigate the effectiveness of various options for organizing the process of diabatic distillation in the separation of a mixture of acetone–toluene–n-butanol by extractive distillation (ED) with dimethylformamide as an entrainer in a scheme where an entrainer is used in the first column.

Methods

Methods. Mathematical modeling in the Aspen Plus v. 12.1 software package was used as the primary research method. The local Non-Random Two Liquid composition equation was used as a model for describing vapor–liquid equilibrium. Parametric optimization of diabatic schemes was carried out according to the criterion of reduced energy costs.

Results

Results. Based on ED scheme for an acetone–toluene–n-butanol mixture with an entrainer in the first column, four options for organizing diabatic distillation schemes were considered, both with and without increasing the temperature of the flows due to compression.

Conclusion

Conclusion. It is shown that the use of diabatic schemes in the ED of an acetone–toluene–n-butanol mixture with dimethylformamide can decrease energy consumption by 11–17%. While the maximum reduction in energy consumption is achieved in a scheme using a compressor, the efficiency of schemes without a compressor is slightly lower. Nevertheless, the technological design of the latter is much simpler.

Цели. Исследовать эффективность применения различных вариантов организации процесса недиабатической ректификации при разделении смеси ацетон–толуол–н-бутанол экстрактивной ректификацией с диметилформамидом в схеме с использованием экстрактивного агента в первой колонне.Методы. Математическое моделирование проводилось в программном комплексе Aspen Plus v. 12.1. Для моделирования парожидкостного равновесия применяли уравнение локальных составов Non-Random Two Liquid. Параметрическая оптимизация неадеабатических схем проводилась по критерию приведенных энергетических затрат.Результаты. На основе схемы экстрактивной ректификации смеси ацетон–толуол–н-бутанол с использованием разделяющего агента в первой колонне было рассмотрено четыре варианта организации схем неадиабатической ректификации, как с применением повышения температуры потоков за счет сжатия в компрессоре, так и без него.Выводы. Показано, что применение неадиабатических схем в экстрактивной ректификации смеси ацетон–толуол–н-бутанол с диметилформамидом позволяет снизить приведенные энергетические затраты на 11–17%, при этом максимальное снижение энергозатрат достигается в схеме с использованием компрессора. Однако эффективность схем без компрессора ниже незначительно, но технологическое оформление таких решений существенно проще.

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The authors declare that there are no conflicts of interest present.