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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">10.32362/2410-6593-2017-12-4-43-49</article-id><article-id custom-type="elpub" pub-id-type="custom">chemicallytech-103</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>THEORETICAL RATIONALE FOR THE SELECTION OF THE OPTIMAL SCHEME OF SEPARATION OF THE THREE-COMPONENT MIXTURE</article-title><trans-title-group xml:lang="ru"><trans-title>ТЕОРЕТИЧЕСКОЕ ОБОСНОВАНИЕ ВЫБОРА ОПТИМАЛЬНОЙ СХЕМЫ РАЗДЕЛЕНИЯ ТРЕХКОМПОНЕНТНОЙ СМЕСИ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><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>доктор технических наук, профессор кафедры процессов и аппаратов химической технологии им. Н.И. Гельперина</p><p>119571, Россия, Москва, пр-т Вернадского, д. 86</p></bio><bio xml:lang="en"><p>Moscow 119571, Russia</p></bio><email xlink:type="simple">mkzakharov@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Писаренко</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Pisarenko</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор технических наук, профессор кафедры химии и технологии основного органического синтеза</p><p>119571, Россия, Москва, пр-т Вернадского, д. 86</p></bio><bio xml:lang="en"><p>Moscow 119571, Russia</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский технологический университет (Институт тонких химических технологий им. М.В. Ломоносова)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow Technological University (M.V. Lomonosov Institute of Fine Chemical Technologies)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>28</day><month>08</month><year>2017</year></pub-date><volume>12</volume><issue>4</issue><fpage>43</fpage><lpage>49</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Zakharov M.K., Pisarenko Y.A., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Захаров М.К., Писаренко Ю.А.</copyright-holder><copyright-holder xml:lang="en">Zakharov M.K., Pisarenko Y.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/103">https://www.finechem-mirea.ru/jour/article/view/103</self-uri><abstract><p>It is theoretically justified that for the scheme of separation of three-component mixtures with the release of the high-boiling component in the first column there is a region of initial compositions for which the heat costs are the least. An expression describing the boundary of the optimality regions of different separation schemes is given. The calculation of the heat costs for both rectification schemes of the three-component mixtures performed using the Aspen Plus software package confirmed the theoretical justification for the existence of optimality regions for each of them. With the help of the concept of internal energy saving, the advantage of one or another scheme of separation of a three-component mixture is explained.</p></abstract><trans-abstract xml:lang="ru"><p>Теоретически обосновано, что для схемы разделения трехкомпонентных смесей с выделением высококипящего компонента в первой колонне существует область исходных составов, для которой тепловые затраты оказываются наименьшими. Приведено выражение, описывающее границу областей оптимальности различных схем разделения. Выполненный с использованием программного пакета Aspen Plus расчет затрат теплоты для обеих схем ректификации трехкомпонентных смесей подтвердил теоретическое обоснование наличия областей оптимальности для каждой из них. С помощью понятия внутреннего энергосбережения объяснено преимущество той или иной схемы разделения трехкомпонентной смеси.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ректификация</kwd><kwd>тройные смеси</kwd><kwd>флегмовое число</kwd><kwd>минимальный паровой поток</kwd><kwd>внутреннее энергосбережение при ректификации</kwd></kwd-group><kwd-group xml:lang="en"><kwd>rectification</kwd><kwd>three-component mixtures</kwd><kwd>reflux ratio</kwd><kwd>minimum vapor flow</kwd><kwd>internal energy saving</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">Halvorsen I.J., Skogestad S. Energy efficient distillation // J. Natural Gas Sci. and Eng. 2011. 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