Mathematical modeling and evaluation of permeation and membrane separation performance for Fischer–Tropsch products in a hydrophilic membrane reactor
Author:
Alihellal Dounia1ORCID, Hadjam Sabrina2, Chibane Lemnouer2
Affiliation:
1. Chemical Process Engineering Laboratory (LGPC), Institute of Optics and Precision Mechanics , Ferhat Abbas University Setif 1 , Setif , Algeria 2. Chemical Process Engineering Laboratory (LGPC), Department of Process Engineering, Faculty of Technology , Ferhat Abbas University Setif 1 , Setif , Algeria
Abstract
Abstract
A mathematical model was constructed to estimate the performance of an MFI-membrane reactor used for Fischer–Tropsch synthesis to produce a mixture of liquid hydrocarbons. In order to accurately evaluate the reactor’s performance a parametric study was performed. Under certain operational conditions, such as the total initial pressure in the reaction zone (1–4 MPa) and the hydrogen/carbon monoxide ratio (H2/CO: 1 to 2) on the performance of the studied reactor. The selectivity (productivity) of the hydrocarbon products (S
i
), the quantity of hydrocarbons permiated (θ
i
) and the separation factors of each space (α
i
) were predicted. With increasing pressure, it is observed that θ
CO and
θ
H
2
${\theta }_{{H}_{2}}$
are decreasing from 0.62 to 0.45 and from 0.55 to 0.49 respectively. However, as the H2/CO ratio rises, this measurement shows a slight increase. Aside from, the separation factors of the majority of the current species are unaffected by the H2/CO ratio increasing, while the separation factors of carbon monoxide and hydrogen are increasing. Similarly the selectivity of water, methane, carbon dioxide and ethane increases with increasing H2/CO ratio. Based on these findings it is revealed that the membrane can enable permeability for all species present in the products mixture with varying separation factors, and that the ability to separate species other than water from the reaction side is essentially non-existent.
Publisher
Walter de Gruyter GmbH
Subject
Modeling and Simulation,General Chemical Engineering
Reference50 articles.
1. Hannah, K, Ulrich, S, Peter, P, Roland, D. Power-to-fuel conversion based on reverse water-gas-shift, Fischer–Tropsch synthesis and hydrocracking: mathematical modeling and simulation in Matlab/Simulink. Chem Eng Sci 2020;227:115930. https://doi.org/10.1016/j.ces.2020.115930. 2. Szabina, T, Ferenc, L, József, V, Jenő, H. Fuel purpose hydrocracking of biomass based Fischer–Tropsch paraffin mixtures on bifunctional catalysts. Energy Convers Manag 2020;213:112775. https://doi.org/10.1016/j.enconman.2020.112775. 3. Apichaya, T, Chaiwat, P, Sabaithip, T, Phavanee, N, Thana, S, Lı´ney, A, et al.. Detailed microkinetic modelling of syngas to hydrocarbons via Fischer Tropsch synthesis over cobalt catalyst. Int J Hydrog Energy 2021;46:24721–41. https://doi.org/10.1016/j.ijhydene.2020.03.135. 4. Da, W, Lei, C, Guangci, L, Zhong, W, Xuebing, L, Bo, H. Cobalt-based Fischer–Tropsch synthesis: effect of the catalyst granule thermal conductivity on the catalytic performance. Mol Catal 2021;502:111395. https://doi.org/10.1016/j.mcat.2021.111395. 5. Wenping, M, Wilson, DS, Michela, M, Dennis, ES, Burtron, HD. Fischer–Tropsch synthesis: using deuterium tracer coupled with kinetic approach to study the kinetic isotopic effects of iron, cobalt and ruthenium catalysts. Catal Today 2020;343:137–45. https://doi.org/10.1016/j.cattod.2019.01.059.
|
|