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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Theoretical Foundations of Chemical Engineering</journal-id><journal-title-group><journal-title xml:lang="en">Theoretical Foundations of Chemical Engineering</journal-title><trans-title-group xml:lang="ru"><trans-title>Теоретические основы химической технологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0040-3571</issn><issn publication-format="electronic">3034-6053</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">698156</article-id><article-id pub-id-type="doi">10.7868/S3034605325040057</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Prototype of Digital Twin of Isopropylbenzene Hydroperoxide Decomposition Process for Phenol and Acetone Production</article-title><trans-title-group xml:lang="ru"><trans-title>ПРОТОТИП ЦИФРОВОГО ДВОЙНИКА ПРОЦЕССА РАЗЛОЖЕНИЯ ГИДРОПЕРЕКИСИ ИЗОПРОПИЛБЕНЗОЛА ПРИ ПОЛУЧЕНИИ ФЕНОЛА И АЦЕТОНА</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Prosochkina</surname><given-names>T. R</given-names></name><name xml:lang="ru"><surname>Просочкина</surname><given-names>Т. Р</given-names></name></name-alternatives><email>t.r.prosochkina@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kichatov</surname><given-names>K. G</given-names></name><name xml:lang="ru"><surname>Кичатов</surname><given-names>К. Г</given-names></name></name-alternatives><email>t.r.prosochkina@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">FGBOU VO "Ufa State Petroleum Technical University"</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО "Уфимский государственный нефтяной технический университет"</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-08-15" publication-format="electronic"><day>15</day><month>08</month><year>2025</year></pub-date><volume>59</volume><issue>4</issue><issue-title xml:lang="en">VOL 59, NO4 (2025)</issue-title><issue-title xml:lang="ru">ТОМ 59, №4 (2025)</issue-title><fpage>45</fpage><lpage>54</lpage><history><date date-type="received" iso-8601-date="2025-12-08"><day>08</day><month>12</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2026-08-15"/></permissions><self-uri xlink:href="https://transsyst.ru/0040-3571/article/view/698156">https://transsyst.ru/0040-3571/article/view/698156</self-uri><abstract xml:lang="en"><p>For the unit of decomposition of isopropylbenzene hydroperoxide of the process of phenol and acetone production the prototype of the digital twin on the basis of the created neural network model is developed, which allows to calculate online the outputs of main and by-products, energy resources and conditional profit with relative error not more than 0.73%. Formation of a database of values of technological process parameters is carried out with the use of simulation modeling of plant operation and subsequent verification of model adequacy by comparing the obtained calculated results with the actual values of technological parameters. As a prototype of the digital twin, allowing to determine optimal values of the cumene process parameters of isopropylbenzene hydroperoxide decomposition unit in the online mode, it is proposed to apply the microcontroller ESP-8266 with built-in and developed program written in the language C.</p></abstract><trans-abstract xml:lang="ru"><p>Для установки разложения гидроперекиси изопропилбензола процесса получения фенола и ацетона разработан прототип цифрового двойника на основе созданной нейросетевой модели, которая позволяет рассчитывать в режиме онлайн выходы основной и побочной продукции, энергоресурсов и получаемой при этом условной прибыли с относительной погрешностью не более 0.73%. Формирование базы данных значений параметров технологического процесса выполнено с применением имитационного моделирования работы установки с последующей проверкой адекватности модели путем сопоставления полученных расчетных результатов с фактическими значениями технологических параметров. В качестве прототипа цифрового двойника, позволяющего в режиме онлайн определять оптимальные значения параметров кукольного процесса установки разложения гидроперекиси изопропилбензола, предложено применить микроконтроллер ESP-8266 со встроенной и разработанной программой, написанной на языке С.</p></trans-abstract><kwd-group xml:lang="en"><kwd>cumene process</kwd><kwd>phenol and acetone production unit</kwd><kwd>optimal process parameters</kwd><kwd>digital twin</kwd><kwd>neural networks</kwd><kwd>machine learning</kwd><kwd>artificial intelligence</kwd><kwd>cyber-physical systems</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>кукольный процесс</kwd><kwd>установка получения фенола и ацетона</kwd><kwd>оптимальные технологические параметры</kwd><kwd>цифровой двойник</kwd><kwd>нейронные сети</kwd><kwd>машинное обучение</kwd><kwd>искусственный интеллект</kwd><kwd>киберфизические системы</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Kravets A.G., Bolshakov A.A. 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