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An Efficient Strategy for Electroreduction Reactor Outlet Fractioning into Valuable Products

Author
Abstract

In this work, two industrial dual-step pressure swing adsorption (PSA) processes were designed and simulated to obtain high-purity methane, CO2, and syngas from a gas effluent of a CO2 electroreduction reactor using different design configurations. Among the set of zeolites that was investigated using Monte Carlo and molecular dynamics simulations, NaX and MFI were the ones selected. The dual-PSA process for case study 1 is only capable of achieving a 90.5% methane purity with a 95.2% recovery. As for case study 2, methane is obtained with a 97.5% purity and 95.3% recovery. Both case studies can produce CO2 with high purity and recovery (>97 and 95%, respectively) and syngas with a H2/CO ratio above 4. Although case study 2 allows methane to be used as domestic gas, a much higher value for its energy consumption is observed compared to case study 1 (64.9 vs 29.8 W h mol CH4–1).

Year of Publication
2023
Journal
Industrial and Engineering Chemistry Research
Volume
62
Issue
22
Number of Pages
8847-8863
Date Published
05/2023
DOI
10.1021/acs.iecr.3c00090
PId
614f7da69be7b76f0d5d79d17e00a7e1
Alternate Journal
Ind. Eng. Chem. Res.
Label
OA
Journal Article
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