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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="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vmait</journal-id><journal-title-group><journal-title xml:lang="ru">Computational Mathematics and Information Technologies</journal-title><trans-title-group xml:lang="en"><trans-title>Computational Mathematics and Information Technologies</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2587-8999</issn><publisher><publisher-name>Донской государственный технический университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.23947/2587-8999-2022-1-1-12-18</article-id><article-id custom-type="elpub" pub-id-type="custom">vmait-23</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="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title>Решение задачи многокритериальной оптимизации реакции синтеза бензилалкиловых эфиров методом «идеальной» точки и лексикографического упорядочивания</article-title><trans-title-group xml:lang="en"><trans-title>Solving the problem of multi-criteria optimization of the synthesis reaction of benzylalkyl esters by the method of «ideal» point and lexicographic ordering</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>Коледина</surname><given-names>К. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Koledina</surname><given-names>K. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Коледина Камила - доктор физико-математических наук, доцент кафедры математики.</p><p>ул. Космонавтов, 1, Уфа</p></bio><bio xml:lang="en"><p>Kamila F. Koledina - Doct.Sci. (Phys.-Math.), associate professor, researcher, associate professor of the Mathematics Department, Institute of Petrochemistry and Catalysis of RAS, Ufa State Petroleum Technological University.</p><p>Kosmonavtov St., Ufa</p></bio><email xlink:type="simple">koledinakamila@mail.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>Александрова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Alexandrova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александрова Анастасия – студентка.</p><p>ул. Космонавтов, 1, Уфа</p></bio><bio xml:lang="en"><p>Anastasiya A. Alexandrova - student, Ufa State Petroleum Technological University.</p><p>Kosmonavtov St., Ufa</p></bio><email xlink:type="simple">nastena1425@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт нефтехимии и катализа УФИЦ РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Petrochemistry and Catalysis of RAS</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Уфимский государственный нефтяной технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ufa State Petroleum Technological University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>20</day><month>02</month><year>2023</year></pub-date><volume>6</volume><issue>1</issue><fpage>12</fpage><lpage>18</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Коледина К.Ф., Александрова А.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Коледина К.Ф., Александрова А.А.</copyright-holder><copyright-holder xml:lang="en">Koledina K.F., Alexandrova 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.cmit-journal.ru/jour/article/view/23">https://www.cmit-journal.ru/jour/article/view/23</self-uri><abstract><p>Результат, получаемый в ходе решения задач оптимизации актуален для применения в промышленных и лабораторных процессах. Многокритериальная оптимизация подразумевает оптимизацию двух или более конфликтующих целевых функций.</p><sec><title>Материалы и методы</title><p>Материалы и методы. На основе кинетической модели каталитической реакции синтеза бензилалкиловых эфиров поставлена задача многокритериальной оптимизации с учетом изменяемых параметров: температуры, мольного соотношения реагентов и времени проведения, имеющих ограничения. Обосновано использование методов «идеальной» точки и лексикографического упорядочивания.</p></sec><sec><title>Результаты</title><p>Результаты. Разработан алгоритм решения задачи многокритериальной оптимизации. Используя кинетическую модель синтеза бензилалкиловых эфиров, решена задача МКО условий проведения и получены оптимальные значения изменяемых параметров системы, при которых достигается максимизация выхода целевого продукта и минимизация побочных продуктов химического процесса.</p></sec><sec><title>Обсуждение и заключения</title><p>Обсуждение и заключения. Многокритериальная оптимизация данного процесса позволит дать технологические рекомендации по промышленной реализации процесса с максимальным выходом целевых продуктов и минимальным содержанием побочных. В работе представлено два метода решения задачи, так как для применения полученных результатов на практике должны учитываться рекомендации лица, принимающего решения.</p></sec></abstract><trans-abstract xml:lang="en"><p>The result obtained in the course of solving optimization problems is relevant for use in industrial and laboratory processes. Multi-criteria optimization involves optimizing two or more conflicting objective functions.</p><sec><title>Materials and methods</title><p>Materials and methods. On the basis of the kinetic model of the catalytic reaction of the synthesis of benzylalkyl esters, the task of multi-criteria optimization is set taking into account the variable parameters: temperature, molar ratio of reagents and the time of carrying out, which have limitations. The use of the methods of «ideal» point and lexicographic ordering is justified.</p></sec><sec><title>Results</title><p>Results. An algorithm for solving the multi-criteria optimization problem has been developed. Using the kinetic model of the synthesis of benzylalkyl esters, the problem of MKO of the conditions of conducting was solved and optimal values of the variable parameters of the system were obtained, at which the output of the target product was maximized and the by-products of the chemical process were minimized.</p><p>Discussion and conclusions. Multi-criteria optimization of this process will make it possible to give technological recommendations for the industrial implementation of the process with maximum output of target products and minimum content of by-products. The paper presents two methods for solving the problem, since in order to apply the results obtained in practice, the recommendations of the decision-maker must be taken into account.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>многокритериальная оптимизация</kwd><kwd>задача нелинейного программирования</kwd><kwd>фронт Парето</kwd><kwd>кинетическая модель</kwd><kwd>мольные соотношения исходных реагентов</kwd><kwd>метод «идеальной» точки</kwd><kwd>лексикографическое упорядочивание</kwd></kwd-group><kwd-group xml:lang="en"><kwd>multi-criteria optimization</kwd><kwd>nonlinear programming problem</kwd><kwd>Pareto front</kwd><kwd>kinetic model</kwd><kwd>molar ratios of initial reagents</kwd><kwd>«ideal» point method</kwd><kwd>lexicographic ordering</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания Института нефтехимии и катализа УФИЦ РАН (тема № FMRS-2022-0078).</funding-statement><funding-statement xml:lang="en">The work was carried out within the framework of the state task of the Institute of Petrochemistry and Catalysis, Ural Federal Research Center, Russian Academy of Sciences (subject no. 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