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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">chemicallytech</journal-id><journal-title-group><journal-title xml:lang="en">Fine Chemical Technologies</journal-title><trans-title-group xml:lang="ru"><trans-title>Тонкие химические технологии</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2410-6593</issn><issn pub-type="epub">2686-7575</issn><publisher><publisher-name>MIREA – Russian Technological University (RTU MIREA).</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32362/2410-6593-2021-16-1-7-15</article-id><article-id custom-type="elpub" pub-id-type="custom">chemicallytech-1682</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>THEORETICAL BASIS OF CHEMICAL TECHNOLOGY</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ТЕОРЕТИЧЕСКИЕ ОСНОВЫ ХИМИЧЕСКОЙ ТЕХНОЛОГИИ</subject></subj-group></article-categories><title-group><article-title>Liquid mixtures separation and heat consumption in the process of distillation</article-title><trans-title-group xml:lang="ru"><trans-title>Разделение жидких смесей и затраты теплоты при ректификации</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8595-5679</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Захаров</surname><given-names>М. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Zakharov</surname><given-names>M. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Захаров Михаил Константинович, профессор кафедры процессов и аппаратов химических технологий им. Н.И. Гельперина</p><p>119571, Москва, пр-т Вернадского, д. 86</p></bio><bio xml:lang="en"><p>Mikhail K. Zakharov, Dr. Sci. (Eng.), Professor, N.I. Gelperin Department of Processes and Apparatus of Chemical Technology</p><p>86, Vernadskogo pr., Moscow, 119571</p></bio><email xlink:type="simple">mkzakharov@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1313-8231</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Егоров</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Egorov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Егоров Александр Владимирович, аспирант кафедры процессов и аппаратов химических технологий им. Н.И. Гельперина</p><p>119571, Москва, пр-т Вернадского, д. 86</p></bio><bio xml:lang="en"><p>Alexandr V. Egorov, Postgraduate Student, N.I. Gelperin Department of Processes and Apparatus of Chemical Technology</p><p>86, Vernadskogo pr., Moscow, 119571</p></bio><email xlink:type="simple">betakiller1576@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7084-4661</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Подметенный</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Podmetenny</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Подметенный Александр Александрович, аспирант кафедры процессов и аппаратов химических технологий им. Н.И. Гельперина</p><p>119571, Москва, пр-т Вернадского, д. 86</p></bio><bio xml:lang="en"><p>Alexandr A. Podmetenny, Postgraduate Student, N.I. Gelperin Department of Processes and apparatus of chemical technology</p><p>86, Vernadskogo pr., Moscow, 119571</p></bio><email xlink:type="simple">sansanych08-94@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>МИРЭА – Российский технологический университет (Институт тонких химических технологий им. М.В. Ломоносова)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>MIREA – Russian Technological University (M.V. Lomonosov Institute of Fine Chemical Technologies)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>17</day><month>03</month><year>2021</year></pub-date><volume>16</volume><issue>1</issue><fpage>7</fpage><lpage>15</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Zakharov M.K., Egorov A.V., Podmetenny A.A., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Захаров М.К., Егоров А.В., Подметенный А.А.</copyright-holder><copyright-holder xml:lang="en">Zakharov M.K., Egorov A.V., Podmetenny A.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.finechem-mirea.ru/jour/article/view/1682">https://www.finechem-mirea.ru/jour/article/view/1682</self-uri><abstract><sec><title>Objectives</title><p>Objectives. The aim of this study is to investigate different distillation modes of a binary ideal mixture and determine how various factors affect heat consumption in the column boilers. In addition, it intends to assess the difficulty of separating mixtures. Our research is based on analyzing the characteristics of vapor-liquid equilibrium.</p></sec><sec><title>Methods</title><p>Methods. To conduct our study, we used a graphic-analytical tool to calculate the distillation process of a binary mixture and mathematical models based on the Aspen Plus software package along with DSTWU, RadFrac, and the Sensitivity module. We also used the Peng-Robinson equation (PENG-ROB) to determine the liquid-vapor equilibrium.</p></sec><sec><title>Results</title><p>Results. We employed the graphical method and mathematical models to obtain the operation parameters of two column variants for the distillation of binary ideal benzene-toluene mixtures. In each variant the initial mixture contained the same amount of the low- and high-boiling component. The number of plates in the column sections, reflux ratio, energy consumption, and indicators of internal energy saving were determined.</p></sec><sec><title>Conclusions</title><p>Conclusions. Study results show that using the coefficient of the component distribution between the vapor and liquid phases is a promising method for preliminary assessments of the separation difficulty and measurements of the expected heat consumption in the boilers of columns. Comparison studies showed that the heat consumption in the boiler decreases as the internal energy saving in the columns increases.</p></sec></abstract><trans-abstract xml:lang="ru"><sec><title>Цели</title><p>Цели. Работа посвящена изучению различных режимов ректификации бинарной идеальной смеси и установлению влияния различных факторов на затраты теплоты в кипятильниках колонн, а также оценке трудности разделения смесей на основе анализа характеристик парожидкостного равновесия.</p></sec><sec><title>Методы</title><p>Методы. В качестве методов исследования выбран графоаналитический расчет процесса ректификации бинарной смеси и математическое моделирование с использованием программного комплекса Aspen Plus с последовательным применением методов DSTWU, RadFrac и модуля «Sensitivity». Равновесие жидкость-пар было определено по уравнению Пенга-Робинсона (PENG-ROB).</p></sec><sec><title>Результаты</title><p>Результаты. С использованием графического метода и метода математического моделирования получены параметры работы колонн двух вариантов ректификации бинарных идеальных смесей бензол–толуол, в каждом из которых исходная смесь содержит одинаковое количество низко(высоко)кипящего компонента. Определены числа тарелок в секциях колонны, флегмовые числа, энергозатраты и показатели внутреннего энергосбережения.</p></sec><sec><title>Выводы</title><p>Выводы. Анализ полученных результатов показывает перспективность использования коэффициента распределения компонентов между паровой и жидкой фазами для предварительной оценки трудности разделения и ожидаемых затрат теплоты в кипятильниках колонн. Сравнение рассмотренных вариантов показало, что при увеличении внутреннего энергосбережения в колоннах затраты теплоты в кипятильнике уменьшаются.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>ректификация</kwd><kwd>бинарные смеси</kwd><kwd>относительная летучесть</kwd><kwd>флегмовое число</kwd><kwd>коэффициент распределения</kwd><kwd>внутреннее энергосбережение при ректификации</kwd></kwd-group><kwd-group xml:lang="en"><kwd>distillation</kwd><kwd>binary mixtures</kwd><kwd>relative volatility</kwd><kwd>reflux ratio</kwd><kwd>distribution coefficient</kwd><kwd>internal energy saving in distillation</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Айнштейн В.Г., Захаров М.К., Носов Г.А., Захаренко В.В., Зиновкина Т.В., Таран А.Л., Костанян А.Е. Процессы и аппараты химической технологии. Общий курс: Учебник в 2-х кн.; под ред. В.Г. Айнштейна, 8-е издание. 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