Optimal Design of Ring-Shaped Alumina Catalyst: A Way to Intensify Bioethanol-to-Ethylene Production in Multi-Tubular Reactor Full article
| Journal |
Chemical Engineering Research and Design
ISSN: 0263-8762 , E-ISSN: 1744-3563 |
||
|---|---|---|---|
| Output data | Year: 2019, Volume: 145, Pages: 1-11 Pages count : 10 DOI: 10.1016/j.cherd.2019.02.041 | ||
| Tags | Ring-shaped catalyst; Effectiveness factor of the catalyst; Dehydration of ethanol to ethylene; Tubular reactor; Process intensification; 2D Mathematical model | ||
| Authors |
|
||
| Affiliations |
|
Funding (1)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0017 |
Abstract:
Among other things, the process intensification (PI) pursues the goals of enhancing the process capacity, or downsizing the reactor. The present work is focused on the intensification of catalytic ethanol-to-ethylene dehydration process in multi-tubular reactor by applying the ring-shaped particles of the optimal geometric sizes instead of conventional granules. A new simulating approach allowed us to select the optimal sizes of rings under wide variation of their height h, inner diameter d and outer diameter D. Reducing the equivalent size of pellets (ratio of volume Vp to surface Fp) from 71 to 32 ×10-5 m leads to an increase in the effectiveness factor η from 0.46 to 0.76, thus enhancing catalyst activity due to less intraparticle diffusion. The impact of various factors on the total enhancement of ethylene productivity over ring-shaped catalysts was examined and compared to that over cylinders (Vp/Fp = 71×10-5 m). Increase in effectiveness factor plays the major role, while heat and mass transfer parameters contribute less than 8%. Our study revealed that at a fixed ethanol conversion, PI due to the optimal geometric sizes may be expressed either as 2.1-fold increase in the reactor capacity, or as respective reduction in the tubes quantity. Both options may result in a significant improvement of the process performance.
Cite:
Ovchinnikova E.V.
, Banzaraktsaeva S.P.
, Chumachenko V.A.
Optimal Design of Ring-Shaped Alumina Catalyst: A Way to Intensify Bioethanol-to-Ethylene Production in Multi-Tubular Reactor
Chemical Engineering Research and Design. 2019. V.145. P.1-11. DOI: 10.1016/j.cherd.2019.02.041 WOS Scopus РИНЦ РИНЦ AN OpenAlex
Optimal Design of Ring-Shaped Alumina Catalyst: A Way to Intensify Bioethanol-to-Ethylene Production in Multi-Tubular Reactor
Chemical Engineering Research and Design. 2019. V.145. P.1-11. DOI: 10.1016/j.cherd.2019.02.041 WOS Scopus РИНЦ РИНЦ AN OpenAlex
Dates:
| Submitted: | Oct 29, 2018 |
| Accepted: | Feb 27, 2019 |
| Published online: | Mar 8, 2019 |
| Published print: | May 1, 2019 |
Identifiers:
| Web of science: | WOS:000469896500001 |
| Scopus: | 2-s2.0-85063024872 |
| Elibrary: | 38670422 | 41788111 |
| Chemical Abstracts: | 2019:473001 |
| OpenAlex: | W2921190563 |