Mathematical Modeling of Liquid-Phase Alkylation of Benzene with Ethylene Considering the Process Unsteadiness

Mathematical Modeling of Liquid-Phase Alkylation of Benzene with Ethylene Considering the Process Unsteadiness

Detalhes bibliográficos
Parent link:Industrial and Engineering Chemistry Research
Vol. 59, iss. 32.— 2020.— [P. 14537–14543]
Autor Corporativo: Национальный исследовательский Томский политехнический университет Инженерная школа природных ресурсов Отделение химической инженерии
Outros Autores: Ivashkina E. N. Elena Nikolaevna, Khlebnikova E. S. Elena Sergeevna, Dolganova I. O. Irena Olegovna, Dolganov I. M. Igor Mikhailovich, Khroyan L. A. Lilit Arturovna
Resumo:Title screen
Ethylbenzene is a key intermediate in the manufacture of styrene that is an important industrial monomer. Ethylbenzene is produced by benzene alkylation using either gas-phase or liquid-phase methods. The liquid-phase alkylation that uses liquid acidic catalysts needs to be improved. We develop a mathematical model for the liquid-phase benzene alkylation. The reaction scheme, designed with a due analysis of desired and side reactions, and with the analysis of the formation of deactivating agents, reflects, in particular, the influence of the concentration of heavy hydrocarbons on the catalyst activity. The account of the catalyst deactivation by heavy alkylaromatics allows predictions of the temporal changes in the outputs of the alkylation process. In particular, the decrease of the ethylbenzene concentration by 2–3 wt % and increase of the polyalkylate outlet concentration by 1.5–2 wt % are the results of the catalyst deactivation. These effects, however, can be compensated by 1.3-time increase of polyalkylate supply and by the temperature increase up to 398 K. The calculations also show that it is possible to decrease the supply of fresh catalyst from 0.498 to 0.472 t/hour without loss in the yield of ethylbenzene.
Режим доступа: по договору с организацией-держателем ресурса
Idioma:inglês
Publicado em: 2020
Assuntos:
труды учёных ТПУ
электронный ресурс
Acesso em linha:https://doi.org/10.1021/acs.iecr.0c02660
Formato: Recurso Electrónico Capítulo de Livro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662850

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