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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">10.32362/2410-6593-2016-11-4-4-14</article-id><article-id custom-type="elpub" pub-id-type="custom">chemicallytech-34</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>THE RELATIONSHIP BETWEEN THE STRUCTURE OF PHASE EQUILIBRIUM DIAGRAM AND THE STRUCTURE OF FLOWSHEET DIAGRAMS OF MULTIPHASE QUATERNARY MIXTURES SEPARATION</article-title><trans-title-group xml:lang="ru"><trans-title>ВЗАИМОСВЯЗЬ ДИАГРАММЫ ФАЗОВОГО РАВНОВЕСИЯ И СТРУКТУР СХЕМ РАЗДЕЛЕНИЯ МНОГОФАЗНЫХ ЧЕТЫРЕХКОМПОНЕНТНЫХ СМЕСЕЙ</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>Себякин</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Sebyakin</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант, Кафедра химии и технологии основного органического синтеза</p><p>Москва, 119571 Россия</p></bio><bio xml:lang="en"><p>Moscow, 119571 Russia</p></bio><email xlink:type="simple">a.sebyakin@yandex.ru</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>Фролкова</surname><given-names>А. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Frolkova</surname><given-names>A. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>заведующий кафедрой, Кафедра химии и технологии основного органического синтеза</p><p> </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)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow Technological University (Institute of Fine Chemical Technologies)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>28</day><month>08</month><year>2016</year></pub-date><volume>11</volume><issue>4</issue><fpage>5</fpage><lpage>14</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Sebyakin A.Y., Frolkova A.K., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Себякин А.Ю., Фролкова А.К.</copyright-holder><copyright-holder xml:lang="en">Sebyakin A.Y., Frolkova A.K.</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/34">https://www.finechem-mirea.ru/jour/article/view/34</self-uri><abstract><p>In this work the structures of phase equilibrium diagrams of multiphase four-component systems n-hexane (n-heptane, n-octane) - cyclohexane - furfural - water were investigated. The systems are characterized by the existence of areas of three-phase separation. On the basis of the obtained data the synthesis of feasible variants of separation schemes was carried out, rational modes of functioning of each column were found, the energetically favorable variant was chosen. It was found that the use of preliminary phase separation in systems with n-hexane and n-octane is power-efficient, and the profit in case of the octane system (equimolar mixture) in comparison with the application of the first predetermined separation at the first stage is more than 25%. Certain difficulties (the high values of columns effectiveness: 60 and 40 theoretical plates) upon the separation of the hexane and heptane systems are due to the similar volatilities of n-hexane (n-heptane) and cyclohexane in the vicinity of the point of pure alkane.</p></abstract><trans-abstract xml:lang="ru"><p>В настоящей работе исследованы структуры диаграмм фазового равновесия многофазных четырехкомпонентной систем: н-гексан (н-гептан, н-октан) - циклогексан - фурфурол - вода, характеризующихся наличием областей трехфазного расслаивания. На основе полученных данных: проведен синтез возможных вариантов схем разделения, подобраны рациональные режимы функционирования каждой из колонн, выбран энергетически выгодный вариант. Установлено, что использование предварительного расслаивания в системах с н-гексаном и н-октаном является энергоэффективным, причем выигрыш в случае октановой системы (эквимолярная смесь) по сравнению с применением первого заданного разделения на первой стадии составляет более 25%. Определенные трудности (высокие значения эффективностей колонн: 60 и 40 теоретических тарелок) при разделении гексановой и гептановой систем связаны с близкими летучестями н-гексана (н-гептана) и циклогексана в окрестности точки чистого алкана.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>фазовое равновесие</kwd><kwd>расслаивание</kwd><kwd>азеотропия</kwd><kwd>математическое моделирование</kwd><kwd>область трехфазного расслаивания</kwd><kwd>принципиальная схема разделения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>phase diagram structure</kwd><kwd>limited solubility</kwd><kwd>azeotrope</kwd><kwd>mathematical simulation</kwd><kwd>three-phase separation region</kwd><kwd>separation flowsheet</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">Серафимов Л.А., Фролкова A.K. // Теор. основы хим. технологии. 1997. Т. 31. № 2. 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