Новый метод синтеза добавок для снижения содержания оксидов серы в газах регенерации процесса каталитического крекинга

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Abstract

Синтезированы добавки к катализатору крекинга для снижения содержания оксидов серы в газах регенерации при переработке сырья с высоким содержанием серы. Добавки приготовлены на основе смешанных оксидов Mg, Al, Ce, V, выполняющих одновременно окислительную, адсорбционную и восстановительную функции. Синтезы смешанных оксидов на основе гидротальцитов осуществлены с использованием различных осадителей [NaOH+Na2CO3, CO(NH2)2]. Исследованы структурные и каталитические свойства добавок. Показано, что синтезированные добавки проявляют высокую эффективность работы при проведении циклических испытаний «реакция крекинга — регенерация катализатора», которая составила 96.5% при содержании добавки в каталитической системе 5 мас.%.

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Татьяна Викторовна Бобкова

Институт катализа СО РАН

Author for correspondence.
Email: sprini@list.ru
ORCID iD: 0000-0002-6542-2082

к. х. н.; Центр новых химических технологий ИК СО РАН

Russian Federation, Омск, 644040

Константин Игоревич Дмитриев

Институт катализа СО РАН

Email: sprini@list.ru
ORCID iD: 0000-0003-0704-2468

к. т. н.; Центр новых химических технологий ИК СО РАН

Russian Federation, Омск, 644040

Олег Валерьевич Потапенко

Институт катализа СО РАН

Email: sprini@list.ru
ORCID iD: 0000-0002-2755-7998

к. х. н.; Центр новых химических технологий ИК СО РАН

Russian Federation, Омск, 644040

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Supplementary files

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2. Fig. 1. Component composition of the additive to the cracking catalyst for reducing the content of sulfur oxides in regeneration gases.

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3. Fig. 2. Schematic diagram of the installation for determining the stable properties of additives to the cracking catalyst to reduce sulfur oxide emissions in regeneration gases (RGF 1 and 2 are gas mass flow controllers, T1 and T2 are temperature sensors).

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4. Fig. 3. Diffraction patterns of synthesized samples calcined at 700°C, GT-1, GT-2 and GT-4: ● — MgO – cubic magnesium oxide; □ — СеО2 – cubic cerianite.

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5. Fig. 4. Cyclic studies of the ability to adsorb sulfur(VI) oxide and reduce sulfated samples during precipitation with a mixture of NaOH + Na2CO3 (a) and urea (b).

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6. Fig. 5. Study of cracking catalyst regeneration (results after 5 cycles of “cracking reaction – catalyst regeneration”).

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