probenerИзвестия высших учебных заведений. ПРОБЛЕМЫ ЭНЕРГЕТИКИPower engineering: research, equipment, technology1998-99032658-5456Kazan State Power Engineering University10.30724/1998-9903-2025-27-5-106-117probener-3569Research ArticleЭНЕРГЕТИЧЕСКИЕ СИСТЕМЫ И КОМПЛЕКСЫENERGY SYSTEMS AND COMPLEXESПроблемы энергетического использования осадка сточных вод в котлоагрегате с кипящим слоем Е-75-3,9-440 ДФТProblems of sewage sludge energy utilization in a fluidized bed boiler E-75-3,9-440 DFThttps://orcid.org/0009-0005-1737-1881ТерехинА. П.TerekhinA. P.

Терехин Алексей Павлович – мл. науч. сотр.

г. Архангельск

Alexey P. Terekhin

Arkhangelsk

terehin.a@edu.narfu.ruhttps://orcid.org/0000-0002-3880-8289МарьяндышевП. А.MaryandyshevP. A.

Марьяндышев Павел Андреевич – д-р техн. наук, профессор, первый проректор по стратегическому развитию и науке

г. Архангельск

Pavel A. Maryandyshev

Arkhangelsk

p.marjyandishev@narfu.ruСеверный (Арктический) Федеральный Университет им. М.В. ЛомоносоваРоссияNorthern (Arctic) Federal University named after M.V. LomonosovRussian Federation202519112025275106117Copyright © Терехин А.П., Марьяндышев П.А., 20252025Терехин А.П., Марьяндышев П.А.Terekhin A.P., Maryandyshev P.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.energyret.ru/jour/article/view/3569

АКТУАЛЬНОСТЬ исследования заключается в разработке рекомендаций для эффективного энергетического использования осадка сточных вод в котлоагрегатах с пузырьковым кипящим слоем. ЦЕЛЬ. Рассмотреть проблемы энергетического использования осадка сточных вод. Провести энергообследование котлоагрегата с кипящим слоем Е-75-3,9-440 ДФТ при сжигании осадка сточных вод совместно с древесными отходами целлюлозно-бумажного производства. Проведение теплотехнического анализа осадка сточных вод и древесных отходов. Проведение элементного анализа материала кипящего слоя. МЕТОДЫ. Образцы осадка сточных вод и древесных отходов были отобраны на тракте топливоподачи котла Е-75-3,9-440 ДФТ. Для подготовки проб использовались шаровая барабанная мельница РМ 200 фирмы Retzsch и ситовый анализатор Retzsch AS 200 Control. Элементный анализ осадка сточных вод был проведен методом рентгенофлуоресцентной спектроскопии на спектрометре EDX-8000. Метод идентифицирует металлы и элементы объекта путем детектирования их энергетических сигнатур. Содержание водорода, азота и углерода определено с помощью анализатора EuroVector EA-3000. Теплотворная способность исследуемых образцов была определена с помощью калориметра IKA C 2000 Basic Version 2 с жидкостным криотермостатом LOIP FT-216-25. Энергетические обследования проводились при установившемся тепловом режиме котлоагрегата. РЕЗУЛЬТАТЫ. Результаты исследований показали, что в процессе сжигания осадка сточных вод в котле с кипящим слоем Е-75-3,9-440 ДФТ условия его работы сильно отличаются от расчетных, что связано с проблемами шлакования, эрозии из-за высокой зольности осадка, а также проблем, связанных с эксплуатацией кипящего слоя из-за высокой влажности топлива. ЗАКЛЮЧЕНИЕ. Даны рекомендации по повышению энергетической эффективности сжигания осадка сточных вод в котлоагрегате с кипящим слоем Е-75-3,9-440 ДФТ.

RELEVANCE of the study means the recommendations development for the efficient energy utilization of sewage sludge in the fluidized bed boilers. THE PURPOSE. To consider problems of energy utilization of sewage sludge. Conduct an energy audit of the fluidized bed boiler E-75-3,9-440 DFT during the combustion of sewage sludge together with wood waste from pulp and paper industry. Conducting a proximate analysis of sewage sludge and wood waste. Conducting an elemental analysis of the fluidized bed material. METHODS. Samples of sewage sludge and wood waste were taken from the fuel supply line of boiler E-75-3,9-440 DFT. Retzsch RM 200 ball drum mill and a Retzsch AS 200 Control sieve analyzer were used to prepare samples. Ultimate analysis of sewage sludge was performed by X-ray fluorescence spectroscopy on an EDX-8000 spectrometer. This method identifies metals and elements of the sample by detecting their energy signatures. Hydrogen, nitrogen and carbon content was determined using the EuroVector EA-3000 analyzer. Calorific value of the studied samples was determined using an IKA C 2000 Basic Version 2 calorimeter with a LOIP FT-216-25 liquid cryothermostat. Energy audits were carried out under the established thermal regime of the boiler. RESULTS. Research results have shown that during the combustion of sewage sludge in a fluidized bed boiler E-75-3,9-440 DFT operating conditions are very different from the calculated ones, which is associated with the problems of slag formation, erosion due to the high ash content of the sludge, as well as problems associated with the operation of the fluidized bed due to the high humidity of the fuel. CONCLUSION. Recommendations are given on improving the energy efficiency of wastewater sludge combustion in a fluidized bed boiler E-75-3,9-440 DFT.

осадок сточных водкипящий слойкотлоагрегатэнергоэффективностьбиомасса.sewage sludgefluidized bedboilerenergy efficiencybiomass.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 проведении энергетического обследования парового котла с кипящим слоем Е-75-3,9-440 ДФТ.The Ministry of Science funded Research that led to these results and Higher Education of the Russian Federation, project № FSRU-2024-0007. Authors express their gratitude to Arkhangelsk Pulp and Paper Mill JSC for their assistance in conducting an energy survey of a fluidized bed steam boiler E-75-3,9-440 DFT.ReferencesМакеева Е.Н., Зверева Э.Р., Морозова О.Ю. Перевод котельных на альтернативное топливо // Известия высших учебных заведений. ПРОБЛЕМЫ ЭНЕРГЕТИКИ. 2024. Т.26. № 1. 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The authors declare that there are no conflicts of interest present.