CFD Study of the Numbering up of Membrane Microreactors for CO 2 Capture

Journal article


Harkou, Eleana, Hafeez, S., Manos, G. and Constantinou, A. (2021). CFD Study of the Numbering up of Membrane Microreactors for CO 2 Capture. Processes. 9 (9), p. e1515. https://doi.org/10.3390/pr9091515
AuthorsHarkou, Eleana, Hafeez, S., Manos, G. and Constantinou, A.
AbstractCarbon dioxide (CO2) is one of the major atmospheric greenhouse gases (GHG). The continuous increase of CO2 concentration and its long atmospheric lifetime may cause long-term negative effects on the climate. It is important to develop technologies to capture and minimize those emissions into the atmosphere. The objective of this work is to design and study theoretically and experimentally a numbering-up/scale-out membrane microreactor in order to be used as a capture system. The main aim of the work is to obtain an even flow distribution at each plate of the reactor. Nearly uniform flow distribution was achieved at each layer of the numbering-up microreactor according to the carried-out CFD models. The maximum difference between the average velocities was less than 6% for both gas and liquid flows. To obtain better flow distribution into the microreactor, the radius of the inlet/outlet tube was optimized. Results from CFD and experimental simulations do not match, and slightly maldistribution in achieved in the experimental system due to phase breakthrough and imperfections on the fabrication of the plates. Moreover, comparing the single channel microreactor to the scale-out microreactor, the latter showed poorer performance on CO2 removal while expecting the reactors to have similar performance. By installing inserts with different channel widths, the experimental results were identical to the original case.
KeywordsCO2 capture; membrane; microreactor; numbering up; CFD
Year2021
JournalProcesses
Journal citation9 (9), p. e1515
PublisherMDPI
ISSN2227-9717
Digital Object Identifier (DOI)https://doi.org/10.3390/pr9091515
Publication dates
Online26 Aug 2021
Publication process dates
Accepted24 Aug 2021
Deposited10 Nov 2021
Publisher's version
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File Access Level
Open
Licensehttps://creativecommons.org/licenses/by/4.0/
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