Metal Hydride Hydrogen Storage (Compression) Units Operating at Near-Atmospheric Pressure of the Feed H2

Metal hydride (MH) hydrogen storage and compression systems with near-atmospheric H2 suction pressure are necessary for the utilization of low-pressure produced by solid oxide electrolyzers or released as a byproduct chemical industries. Such should provide reasonably high productivity in modes both charge (H2 absorption at PL ≤ 1 atm) discharge desorption PH = 2–5 atm), which implies provision equilibrium pressures Peq < available cooling temperature (TL 15–20 °C) and, same time, > when heated to TH 90–150 °C. This work presents results development such based on AB5-type intermetallics characterized 0.1–0.3 atm 3–8 TL 15 °C 100 °C, respectively. The MH powders mixed wt.% Ni-doped graphene-like material expanded natural graphite improvement dynamics were loaded cylindrical container equipped internal external heat exchangers. developed units capacity about Nm3 shown exhibit flow rates above 10 NL/min during ≤1 cooled ≤20 cold water release 2 5 90 120 hot steam,