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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">probener</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. ПРОБЛЕМЫ ЭНЕРГЕТИКИ</journal-title><trans-title-group xml:lang="en"><trans-title>Power engineering: research, equipment, technology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-9903</issn><issn pub-type="epub">2658-5456</issn><publisher><publisher-name>Kazan State Power Engineering  University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30724/1998-9903-2026-28-4-139-148</article-id><article-id custom-type="elpub" pub-id-type="custom">probener-4004</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>ЭНЕРГЕТИЧЕСКИЕ СИСТЕМЫ И КОМПЛЕКСЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ENERGY SYSTEMS AND COMPLEXES</subject></subj-group></article-categories><title-group><article-title>Повышение надежности работы кипящего слоя при сжигании осадка сточных вод и кородревесного топлива</article-title><trans-title-group xml:lang="en"><trans-title>Increasing the reliability of fluidized bed operation during the combustion of sewage sludge and bark wood fuel</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-1737-1881</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Терехин</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Terekhin</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Терехин Алексей Павлович – младший научный сотрудник</p><p>г. Архангельск</p></bio><bio xml:lang="en"><p>Alexey P. Terekhin</p><p>Arkhangelsk</p></bio><email xlink:type="simple">Terehin.a@edu.narfu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3880-8289</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Марьяндышев</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Maryandyshev</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Марьяндышев Павел Андреевич – д-р техн. наук, доцент, первый проректор по стратегическому развитию и науке</p><p>г. Архангельск</p></bio><bio xml:lang="en"><p>Pavel A. Maryandyshev</p><p>Arkhangelsk</p></bio><email xlink:type="simple">p.marjyandishev@narfu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Северный (Арктический) Федеральный Университет им. М.В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Northern (Arctic) Federal University named after M.V. Lomonosov</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>15</day><month>09</month><year>2026</year></pub-date><volume>28</volume><issue>4</issue><fpage>139</fpage><lpage>148</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Терехин А.П., Марьяндышев П.А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Терехин А.П., Марьяндышев П.А.</copyright-holder><copyright-holder xml:lang="en">Terekhin A.P., Maryandyshev P.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.energyret.ru/jour/article/view/4004">https://www.energyret.ru/jour/article/view/4004</self-uri><abstract><sec><title>АКТУАЛЬНОСТЬ</title><p>АКТУАЛЬНОСТЬ: Актуальность исследования заключается в разработке технических мероприятий для увеличения надежности (длительности) работы материала кипящего слоя при сжигании осадка сточных вод и кородревесного топлива.</p></sec><sec><title>ЦЕЛЬ</title><p>ЦЕЛЬ: рассмотреть основную проблему (агломерацию кипящего слоя), влияющую на надежность и длительность работы котлоагрегата с кипящим слоем Е-75-3,9-440 ДФТ. Провести испытания режимных мероприятий, направленных на увеличение надежности и длительности работы котлоагрегата с кипящим слоем Е-75-3,9-440 ДФТ.</p></sec><sec><title>МЕТОДЫ</title><p>МЕТОДЫ: Пробы донной золы и агломератов отбирались на протяжении всего периода эксплуатации кипящего слоя. Отбор проб кородревесного топлива и осадка сточных вод производился с тракта топливоподачи котельного агрегата Е-75-3,9-440 ДФТ. При подготовке проб использовались шаровая барабанная мельница РМ 200 фирмы Retzsch и ситовый анализатор Retzsch AS 200 Control. Элементный анализ кородревесного топлива, осадка сточных вод и донной золы проведен методом рентгенофлуоресцентной спектроскопии на спектрометре EDX-8000. Испытания режимных мероприятий проводились на протяжении всего срока эксплуатации материала слоя до его полной замены.</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ: Результаты исследований показали, что в процессе сжигания в материале кипящего слоя накапливаются щелочные соединения интенсифицирующие процессы агломерации. Режимные мероприятия такие как увеличение скорости ожижения слоя и снижение температуры слоя увеличивают срок службы материала слоя, однако не позволяют полностью исключить процесс агломерации.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>THE PURPOSE</title><p>THE PURPOSE: The relevance of the research lies in the development of technical measures to increase the reliability (duration) of the fluidized bed material during the combustion of sewage sludge and crusty wood fuel.</p></sec><sec><title>PURPOSE</title><p>PURPOSE: To consider the main problem (fluidized bed agglomeration) affecting the reliability and duration of operation of a fluidized bed boiler. Е -75-3,9-440 DFT. To test routine measures aimed at increasing the reliability and duration of operation of the fluidized bed boiler E-75-3,9-440 DFT.</p></sec><sec><title>METHODS</title><p>METHODS: Samples of bottom ash and agglomerates were taken throughout the entire period of operation of the fluidized bed. The sampling of crusty wood fuel and sewage sludge was carried out from the fuel supply path of the boiler unit E-75-3,9-440 DFT. A Retzsch RM 200 ball drum mill and a Retzsch AS 200 Control sieve analyzer were used in sample preparation. The elemental analysis of crusty wood fuel, sewage sludge and bottom ash was carried out using X-ray fluorescence spectroscopy on an EDX-8000 spectrometer. Tests of routine measures were carried out throughout the entire service life of the bed material until it was completely replaced. results: The research results have shown that during combustion, alkaline compounds accumulate in the fluidized bed material, intensifying agglomeration processes. Routine measures such as increasing the rate of liquefaction of the layer and lowering the temperature of the bed increase the service life of the layer material, but do not exclude the agglomeration process.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>кипящий слой</kwd><kwd>агломерация</kwd><kwd>материал слоя</kwd><kwd>донная зола</kwd><kwd>первичный воздух</kwd><kwd>температура слоя</kwd><kwd>калий</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fluidized bed</kwd><kwd>agglomeration</kwd><kwd>bed material</kwd><kwd>bottom ash</kwd><kwd>primary air</kwd><kwd>bed temperature</kwd><kwd>potassium</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование, приведшее к этим результатам, финансировалось за счет средств  Министерства  науки  и  высшего  образования  Российской  Федерации,  проект  № FSRU-2024-0007. Авторы  выражают  признательность  АО  “Архангельский  ЦБК” за помощь в исследовании проблемы агломерации слоя парового котла Е-75-3,9-440 ДФТ.</funding-statement><funding-statement xml:lang="en">The Ministry of Science funded Research that led to these results and Higher Education of the Russian Federation, project № FSRU-2024-0007. The authors express their gratitude to Arkhangelsk Pulp and Paper Mill JSC for their help in researching the bed agglomeration problem of the steam boiler E-75-3,9-440 DFT.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Демин А.В., Демина Г.В. Влияние состава генераторного газа на выбросы загрязняющих веществ. Известия высших учебных заведений. ПРОБЛЕМЫ ЭНЕРГЕТИКИ. 2026;28(1):131-140. https://doi.org/10.30724/1998-9903-2026-28-1-131-140.</mixed-citation><mixed-citation xml:lang="en">Demin A.V., Demina G.V. 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