vestiftИзвестия Национальной академии наук Беларуси. Серия физико-технических наукProceedings of the National Academy of Sciences of Belarus. Physical-technical series1561-83582524-244XThe Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"10.29235/1561-8358-2023-68-3-220-233vestift-809Research ArticleЭНЕРГЕТИКА, ТЕПЛО- И МАССООБМЕНPOWER ENGINEERING, HEAT AND MASS TRANSFERПрименимость соединений на основе никеля в качестве катализаторов термоконверсии первичных продуктов пиролиза биомассыApplicability of nickel-based compounds as catalysts for thermal conversion of primary biomass pyrolysis productsМалькоМ. В.MalkoM. V.

Малько Михаил Владимирович, кандидат физико-математических наук, ведущий научный сотрудник

ул. Академическая, 15, корп. 2, 220072, Минск

Mikhail V. Malko, Cand. Sci. (Physics and Mathematics), Leading Researcher

15, building 2, Academicheskaya Str., 220072, Minsk

mikhailvm@bas-net.byВасилевичС. В.VasilevichS. V.

Василевич Сергей Владимирович, кандидат технических наук, заведующий лабораторией

ул. Уборевича, 77, 220072, Минск

Siarhei V. Vasilevich, Cand. Sci. (Engineering), Head of the Laboratory

77, Uborevich Str., 220072, Minsk

svasilevich@yandex.ruПодболотовК. Б.PodbolotovK. B.

Подболотов Кирилл Борисович, кандидат технических наук, заведующий сектором структурного анализа

ул. Академика Купревича, 10, 220084, Минск

Kirill B. Podbolotov, Cand. Sci. (Engineering), Head of the Structural Analysis Sector

10, Akademician Kuprevich Str., 220084, Minsk

kirilbor@gmail.comДегтеровД. В.DegterovD. V.

Дегтеров Дмитрий Валентинович, старший научный сотрудник

ул. Академическая, 15, корп. 2, 220072, Минск

Dmitry V. Degterov, Senior Researcher

15, building 2, Academicheskaya Str., 220072, Minsk

ddegterov@mail.ruАсадчийА. Н.AsadchyiA. N.

Асадчий Андрей Николаевич, старшийнаучный сотрудник

ул. Академическая, 15, корп. 2, 220072, Минск

Andrei N. Asadchyi, Senior Researcher

15, building 2, Academicheskaya Str., 220072, Minsk

asadchyi@tut.byИнститут энергетики Национальной академии наук БеларусиInstitute of Power Engineering of the National Academy of Sciences of BelarusБелорусская государственная академия авиацииBelarusian State Aviation AcademyФизико-технический институт Национальной академии наук БеларусиPhysical-Technical Institute of the National Academy of Sciences of Belarus202303102023683220233Copyright © Малько М.В., Василевич С.В., Подболотов К.Б., Дегтеров Д.В., Асадчий А.Н., 20232023Малько М.В., Василевич С.В., Подболотов К.Б., Дегтеров Д.В., Асадчий А.Н.Malko M.V., Vasilevich S.V., Podbolotov K.B., Degterov D.V., Asadchyi A.N.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestift.belnauka.by/jour/article/view/809

Обсуждаются результаты экспериментального исследования термического разложения пиролитической смолы, выполненного в изотермических условиях при температурах 300, 350 и 400 °С с использованием никельсодержащих катализаторов системы Ni–Fe–Mo. Показано, что кинетику этого процесса можно описать с помощью уравнения Аврами–Ерофеева с переменным показателем n, при этом область изменения этого показателя составляет от 0,415 до 1,238. Среднее значение показателя n, рассчитанное по всем вариантам исследования, равно 0,694 (95 % ДИ от 0,605 до 0,783), а медианное значение – 0,639. Как известно, уравнение Аврами–Ерофеева описывает кинетику термического разложения вещества в конденсированном состоянии, которая определяется процессом зародышеобразования. Высказано предположение, что в случае термического разложения пиролитической смолы в интервале температур 300–400 °С данный процесс является лимитирующей стадией суммарного процесса. Обнаружено, что скорость разложения пиролитической смолы возрастает в случае внесения в реакционную зону частиц никельсодержащего катализатора, разработанного специалистами Физико-технического института Национальной академии наук Беларуси. На основании установленных данных сделан вывод о перспективности использования никельсодержащего катализатора в процессах термического разложения тяжелых углеводородов, образующихся в процессах термохимической конверсии биомассы.

The paper discusses the results of an experimental study of the thermal decomposition of pyrolytic tar carried out in isothermal conditions at temperatures of 300, 350 and 400 °C. It was found that the kinetics of this process can be described using the Avrami–Erofeev equation with a variable parameter n. Analysis of the established data showed that the area of variation of this index included values from 0.415 to 1.238. The mean value of the n parameter calculated for all variants of the study was 0.694 (95 % CI from 0.605 to 0.783), and the median value was 0.639. As is known, the Avrami–Erofeev equation describes the kinetics of thermal decomposition of matter in the condensed state, determined by the nucleation process. This suggests that in the case of thermal decomposition of pyrolytic tar in the temperature range 300–400 °С this process is the limiting stage of the total process. The pyrolytic tarn decomposition rate was found to increase in the case of introduction of particles of nickel catalyst developed at the Physical and Technical Institute of the National Academy of Sciences of Belarus into the reaction zone. However, only with respect to one sample, it can be confidently stated that this is the result of the catalytic effect of applied nickel catalyst. Based on the established data, it was concluded that it is promising to use a nickel-containing catalyst in the processes of thermal decomposition of heavy hydrocarbons formed in the processes of thermochemical conversion of biomass.

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The authors declare that there are no conflicts of interest present.