Two-component model for catalyst deactivation | Sciact - научная деятельность

Two-component model for catalyst deactivation Научная публикация

Конференция

XXIII International Conference on Chemical Reactors
04-11 нояб. 2018 , Ghent

Журнал

Chemical Engineering Journal
ISSN: 1385-8947

Вых. Данные

Год: 2019, Том: 378, Номер статьи : 122176, Страниц : 4 DOI: 10.1016/j.cej.2019.122176

Авторы

Malkovich E.G. ^1,2 , Parkhomchuk E.V. ^2,3 , Bazaikin Ya.V. ^1,2 , Lysikov A.I. ^2,3

Организации

1	Sobolev Institute of Mathematics SB RAS, Novosibirsk, Russia
2	Novosibirsk State University, Novosibirsk, Russia
3	Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia

Texture evolution of alumina hydrotreating catalyst was theoretically modeled using geometrical characteristics calculated via Monte-Carlo methods and methods of the graph theory. In the prescribed model deactivation was specified by monotonic increase of alumina grain radius, which imitated deposition of coke and metal species onto the pore surface. A novel two-component nonhomogeneous model was designed based on the diffusion of asphaltene molecules inside the cylindrical pellet according to Fick’s law and deposition of the coke particles from heavy oil on the surface of the catalyst. The model resulted in non-monotonous coke distribution with a distinct maximum in the inner region of the pellet, which, nevertheless, shifts to the center at later deactivation stages due to the higher hydrogenation performance of pellet border region. Model can be applied to describe profiles of coke depositions during deactivation process for a pellet with an arbitrary boundary.

Malkovich E.G. , Parkhomchuk E.V. , Bazaikin Y.V. , Lysikov A.I.
Two-component model for catalyst deactivation
Chemical Engineering Journal. 2019. V.378. 122176 :1-4. DOI: 10.1016/j.cej.2019.122176 WOS Scopus OpenAlex

Опубликована online:

8 июл. 2019 г.

Web of science:	WOS:000487764800105
Scopus:	2-s2.0-85069551312
OpenAlex:	W2957720902

БД	Цитирований
OpenAlex	9
Scopus	8