catalКатализ в промышленностиKataliz v promyshlennosti1816-03872413-6476LLC "KALVIS"10.18412/1816-0387-2023-6-70-79catal-978Research ArticleКАТАЛИЗ В НЕФТЕПЕРЕРАБАТЫВАЮЩЕЙ ПРОМЫШЛЕННОСТИСATALYSIS IN PETROLEUM REFINING INDUSTRYЗащита катализаторов гидроочистки нефтяных фракций от механических примесей: экспериментальные исследования и расчетGuard of hydrotreating catalysts of oil fractions from solid particulates: experimental studies and calculationМикИ. А.MikI. A.ctls@kalvis.ruКленовО. П.KlenovO. P.ctls@kalvis.ruКазаковM. O.KazakovM. O.ctls@kalvis.ruНадеинаК. А.NadeinaK. A.ctls@kalvis.ruКлимовО. В.KlimovO. V.ctls@kalvis.ruРешетниковС. И.ReshetnikovS. I.ctls@kalvis.ruНосковА. С.NoskovA. S.ctls@kalvis.ruИнститут катализа им. Г.К. Борескова СО РАН, НовосибирскРоссияBoreskov Institute of Catalysis SB RAS, NovosibirskRussian Federation2023231120232367079Copyright © LLC "KALVIS", 20232023LLC "KALVIS"LLC "KALVIS"https://www.catalysis-kalvis.ru/jour/about/submissions#copyrightNoticehttps://www.catalysis-kalvis.ru/jour/article/view/978

Проведено исследование эффективности улавливания микрочастиц механических примесей, содержащихся в дизельном топливе, для пакетной загрузки катализаторов – аналога промышленного пакета защитных слоев гидропроцессов. Пакет катализаторов состоял из ранжированных по форме и размеру зерен катализатора: сегментные кольца, полые цилиндры двух типоразмеров и зерна с сечением в форме трилистника. Эксперименты проводились в режиме струйного течения с неизменным ансамблем микрочастиц – железной окалины размером от 5 до 150 мкм на входе пакетной загрузки. Получено, что коэффициент проскока пакетной загрузки катализаторов защитного слоя существенно не менялся (K ≈ 0,985) в ходе эксперимента. При этом наблюдался линейный рост перепада давления на пакетной загрузке катализаторов защитного слоя высотой 17 см – с 220 до 408 Па, который происходил в результате улавливания зернами катализатора микрочастиц механических примесей. Теоретическая оценка начального перепада давления (228 Па) с хорошей точностью совпадает с экспериментальными данными (220 Па).

A study was made of the efficiency of trapping solid microparticulates contained in diesel fuel for catalyst loading – an analogue of an industrial package of guard beds of hydroprocesses. The package of catalysts consisted of catalyst granules ranked by shape and size: segmented rings, hollow cylinders of two standard sizes and trilobe shape. The experiments were carried out in the trickle flow regime with a constant ensemble of microparticulates – iron scale with a size of 5 to 150 μm at the inlet of the catalysts loading. It was found that the penetration coefficient of the catalysts loading of the guard beds did not change significantly (K ≈ 0.985) during the experiment. At the same time, a linear increase in the pressure drop on the catalysts loading of the guard beds with a height of 17 cm from 220 to 408 Pa was observed which occurred as a result of the trapping of solid microparticulates by the catalyst granules. The theoretical estimate of the initial pressure drop (228 Pa) coincides with the experimental data (220 Pa) with good accuracy.

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