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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">catal</journal-id><journal-title-group><journal-title xml:lang="ru">Катализ в промышленности</journal-title><trans-title-group xml:lang="en"><trans-title>Kataliz v promyshlennosti</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1816-0387</issn><issn pub-type="epub">2413-6476</issn><publisher><publisher-name>LLC "KALVIS"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18412/1816-0387-2026-2-94-104</article-id><article-id custom-type="elpub" pub-id-type="custom">catal-1258</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>ИНЖЕНЕРНЫЕ ПРОБЛЕМЫ. ЭКСПЛУАТАЦИЯ И ПРОИЗВОДСТВО</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>INDUSTRY ENGINEERING PROBLEMS. OPERATION AND PRODUCTION</subject></subj-group></article-categories><title-group><article-title>Корреляция флуктуаций входного давления и структуры псевдоожиженного слоя</article-title><trans-title-group xml:lang="en"><trans-title>Correlation of input pressure fluctuations and fluidized bed structure</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>Кленов</surname><given-names>О. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Klenov</surname><given-names>O. P.</given-names></name></name-alternatives><email xlink:type="simple">ctls@kalvis.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>Дубинин</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dubinin</surname><given-names>Yu. V.</given-names></name></name-alternatives><email xlink:type="simple">ctls@kalvis.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>Языков</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Yazykov</surname><given-names>N. A.</given-names></name></name-alternatives><email xlink:type="simple">ctls@kalvis.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>Яковлев</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Yakovlev</surname><given-names>V. A.</given-names></name></name-alternatives><email xlink:type="simple">ctls@kalvis.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>Носков</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Noskov</surname><given-names>A. S.</given-names></name></name-alternatives><email xlink:type="simple">ctls@kalvis.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт катализа им. Г.К. Борескова СО РАН, Новосибирск</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Boreskov Institute of Catalysis SB RAS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>30</day><month>03</month><year>2026</year></pub-date><volume>26</volume><issue>2</issue><fpage>94</fpage><lpage>104</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; LLC "KALVIS", 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">LLC "KALVIS"</copyright-holder><copyright-holder xml:lang="en">LLC "KALVIS"</copyright-holder><license xlink:href="https://www.catalysis-kalvis.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.catalysis-kalvis.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.catalysis-kalvis.ru/jour/article/view/1258">https://www.catalysis-kalvis.ru/jour/article/view/1258</self-uri><abstract><p>Работа выполнена при финансовой поддержке Министерства науки и высшего образования РФ в рамках государственного задания Института катализа СО РАН (проекты FWUR-2024-0037 и FWUR-2024-0038). Цель настоящей работы – на примере реактора окисления иловых осадков сточных вод с производительностью 50000 т/год показать связь между флуктуациями давления на входе в реактор и пространственной структурой псевдоожиженного слоя. Для ожижения слоя в реакторе используется трубчатый коллектор, для которого в литературе нет аналогичных данных. Исследования выполнены с помощью численного 3D-моделирования. Данные мониторинга входного давления и видеосъемки слоя в реакторе были использованы для сравнения с расчетом. Показано, что флуктуации давления на входе в реактор и в разных точках по высоте слоя коррелируют между собой, причем степень корреляции уменьшается по мере удаления от входа в реактор. Спектральный анализ флуктуаций входного давления выявил совпадение основных частот флуктуаций в области 0,8–1,0 Гц для расчета и эксперимента. Сопоставление динамики изменения поверхности слоя в расчете и эксперименте показало, что процесс формирования крупных пузырей, который является «фундаментом» для гидродинамической картины в слое, аналогичен в расчетах и эксперименте. Информация о степени корреляции флуктуаций входного давления и структуры псевдоожиженного слоя полезна для определения текущего состояния слоя катализатора, что способствует надежному управлению реактором и процессом в целом.</p></abstract><trans-abstract xml:lang="en"><p>The objective of this study is to demonstrate the relationship between reactor inlet pressure fluctuations and the spatial structure of a fluidized bed using a 50,000 t/year wastewater sludge oxidation reactor as an example. A tubular collector is used to fluidize the bed in the reactor, for which similar data are not available in the literature. The study was conducted using three-dimensional numerical modeling. Inlet pressure monitoring data and reactor bed video recordings were used for comparison with calculations. It is shown that pressure fluctuations at the reactor inlet and at various points along the bed height correlate, with the degree of correlation decreasing with distance from the reactor inlet. Spectral analysis of inlet pressure fluctuations revealed a coincidence of the main oscillation frequencies in the range of 0.8–1.0 Hz in both calculations and experiments. A comparison of the bed surface dynamics between calculations and experiments revealed that the process of large bubble formation, which underlies the hydrodynamic pattern in the bed, is similar in both calculations and experiments. Information on the degree of correlation between inlet pressure variations and the fluidized bed structure is useful for determining the current state of the catalyst bed, which contributes to reliable control of the reactor and the process as a whole.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>вычислительная гидродинамика</kwd><kwd>реактор с псевдоожиженным слоем частиц катализатора</kwd><kwd>мониторинг давления на входе в реактор</kwd><kwd>Фурье преобразование спектра флуктуаций давления</kwd><kwd>пространственное распределение частиц в объеме псевдоожиженного слоя</kwd></kwd-group><kwd-group xml:lang="en"><kwd>computational fluid dynamics (CFD)</kwd><kwd>fluidized bed reactor</kwd><kwd>reactor inlet pressure monitoring</kwd><kwd>Fourier transform of pressure fluctuation spectrum</kwd><kwd>spatial distribution of particles in the fluidized bed volume</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">https://geonovosti.terratech.ru/social/rekultivatsiya-ilovykh-poley-v-rossii/#article1 - дата обращения 06.10.2025.</mixed-citation><mixed-citation xml:lang="en">https://geonovosti.terratech.ru/social/rekultivatsiya-ilovykh-poley-v-rossii/#article1 - дата обращения 06.10.2025.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Fedorov A.V., Dubinin Yu.V., Yeletsky P.M., Fedorov I.A., Shelest S.N., Yakovlev V.A. // Journal of Hazardous Materials. 2021. 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