Article Dans Une Revue Industrial and engineering chemistry research Année : 2024

Green Hydrogen Recovery from Natural Gas Grids by Vacuum Pressure Swing Adsorption

Lucas Zafanelli
Ezzeldin Aly
Adriano Henrique
Alírio Rodrigues
José Silva

Résumé

This study focuses on the development of a conceptual vacuum pressure swing adsorption process (VPSA) for green hydrogen (GH) recovery from natural gas grids (NGG). Accordingly, the kinetic-based separation of H 2 from NGG was achieved by Page 1 of 41

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Industrial & Engineering Chemistry Research using a commercial carbon molecular sieve (CMS-3K-172) adsorbent. To develop the VPSA cycle, the CMS-3K-172 was characterized, single and multicomponent breakthrough curves for H 2 and CH 4 were performed, and adsorption isotherms were collected between 195 and 273 K, and pressures up to 18 bar. To separate H 2 (20%) from CH 4 (80%), three different VPSA cycle configurations were designed and simulated using Aspen Adsorption. The operational variables, such as step times, intermediate-to-high pressure ratio, purge-to-feed ratio, and H 2 initial concentration were evaluated for maximum values of purity, recovery, and adsorbent productivity. The results show that the VPSA processes can enrich H 2 in the product stream up to 68% with a recovery of 92%.

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Dates et versions

hal-04797110 , version 1 (22-11-2024)

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Lucas Zafanelli, Ezzeldin Aly, Adriano Henrique, Alírio Rodrigues, Georges Mouchaham, et al.. Green Hydrogen Recovery from Natural Gas Grids by Vacuum Pressure Swing Adsorption. Industrial and engineering chemistry research, 2024, 63 (14), pp.6333-6346. ⟨10.1021/acs.iecr.3c04532⟩. ⟨hal-04797110⟩
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