Effect of C3-Alcohol Impurities on Alumina-Catalyzed Bioethanol Dehydration to Ethylene: Experimental Study and Reactor Modeling Научная публикация
| Журнал |
Catalysts
ISSN: 2073-4344 |
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| Вых. Данные | Год: 2023, Том: 13, Номер: 3, Номер статьи : 509, Страниц : 18 DOI: 10.3390/catal13030509 | ||
| Ключевые слова | Bioethanol to ethylene dehydration; Alumina catalyst; Propanol impurities; Kinetic model; Mathematical simulation; Multitubular fixed-bed reactor | ||
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| Организации |
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Информация о финансировании (1)
| 1 | Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) | 0239-2021-0014 |
Реферат:
The impact of feedstock impurities on catalytic process is among the crucial issues for processing real raw materials. A real and model 92%-bioethanol contaminated with 0.03−0.3%mol 1-propanol or 2-propanol were used to make ethylene on a proprietary alumina catalyst in iso-thermal flow reactor. We proposed a formal kinetic model to describe the impured bioethanol conversion to ethylene and byproducts and used it to evaluate the multitubular reactor (MTR) for 60 KTPA ethylene production. The simulated data agree well with experimental results. Under re-action-controlled conditions, C3-alcohols strongly suppress the formation of by-products and eth-ylene-from-ethanol, and slightly inhibit formation of ethylene-via-ether. It is the suppression of the ethylene-via-ether route that causes a decrease in ethanol conversion. The predominant formation of ethylene-via-ether results in an increased ethylene yield, but doubling the catalyst load is re-quired to achieve conversion as for pure feedstock. 2-Propanol has a stronger effect on dehydra-tion than 1-propanol. Diffusion inside the grains levels out the effect of C3-alcohols on the process in MTR, giving ethylene yield as high as ~98% while dehydrating a contaminated 92% ethanol. However, impurities dilute ethanol and generate propylene (which contaminates target product), these worsen feedstock consumption and ethylene productivity in MTR.
Библиографическая ссылка:
Ovchinnikova E.V.
, Banzaraktsaeva S.P.
, Kovgan M.A.
, Chumachenko V.A.
Effect of C3-Alcohol Impurities on Alumina-Catalyzed Bioethanol Dehydration to Ethylene: Experimental Study and Reactor Modeling
Catalysts. 2023. V.13. N3. 509 :1-18. DOI: 10.3390/catal13030509 WOS Scopus РИНЦ CAPlus OpenAlex
Effect of C3-Alcohol Impurities on Alumina-Catalyzed Bioethanol Dehydration to Ethylene: Experimental Study and Reactor Modeling
Catalysts. 2023. V.13. N3. 509 :1-18. DOI: 10.3390/catal13030509 WOS Scopus РИНЦ CAPlus OpenAlex
Даты:
| Поступила в редакцию: | 20 янв. 2023 г. |
| Принята к публикации: | 10 февр. 2023 г. |
| Опубликована online: | 17 февр. 2023 г. |
| Опубликована в печати: | 1 мар. 2023 г. |
Идентификаторы БД:
| Web of science: | WOS:000955138900001 |
| Scopus: | 2-s2.0-85151442094 |
| РИНЦ: | 53840674 |
| Chemical Abstracts: | 2023:684247 |
| OpenAlex: | W4322774475 |