Techno-economic evaluation on a hybrid technology for low hydrogen concentration separation and purification from natural gas grid
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Author/sNordio, Maria; Wassie, Solomon Assefa; Van Sint Annaland, Martin; Pacheco Tanaka, D. Alfredo; Viviente Sole, José Luis; [et al.]
Natural gas grid
Hydrogen can be stored and distributed by injecting into existing natural grids, then, at the user site separated and used in different applications. The conventional technology for hydrogen separation is pressure swing adsorption (PSA). The recent NREL study showed the extraction cost for separating hydrogen from a 10% H2 stream with a recovery of 80% is around 3.3–8.3 US$/kg. In this document, new system configurations for low hydrogen concentration separation from the natural gas grid by combining novel membrane-based hybrid technologies will be described in detail. The focus of the manuscript will be on the description of different configurations for the direct hydrogen separation, which comprises a membrane module, a vacuum pump and an electrochemical hydrogen compressor. These technological combinations bring substantial synergy effect of one-another while improving the total hydrogen recovery, purity and total cost of hydrogen. Simulation has been carried out for 17 different ...