Experimental study of steam methane reforming in a Pd-based fluidized bed membrane reactor

Effect of the presence of light hydrocarbon mixtures on hydrogen permeance through Pd–Ag alloyed membranes

“…Although these membranes could work at 700 C or even higher temperatures according to the manufacturer, the maximum working temperature without damage depends on the applied pressure drop on both sides of the membrane. To illustrate this, the maximum reported temperature at which similar membranes have been tested without deteriorating the perm-selectivity to hydrogen along the time on stream is 650 C [37,38].…”

Preliminary techno‐economic analysis of a multi‐bed series reactor as a simultaneous CF4 abatement and utilization process

“…In turn, this resulted in higher CaF 2 production in S‐2 and S‐3, where reactors are connected in series, compared to S‐1, where a single reactor is used. Although this phenomenon has been frequently reported for membrane reactors equipped with hydrogen separation membranes for higher hydrogen production, no work, to the best of our knowledge, has been reported for simultaneous CF 4 abatement and utilization. For the same CaF 2 production of 0.0523 kmol h −1 , reduced operating temperatures of 936 K and 894 K were observed in S‐2 and S‐3, respectively, compared with S‐1 and this could lead to possible cost savings through less natural gas required to supply enough heat for the system.…”

Hydrogen production by steam reforming of natural gas and other nonrenewable feedstocks

“…This indicates that the best reactor performance is achieved at a high temperature within the boundaries imposed by membrane stability (700 C) and high pressure. Roses, Gallucci, Manzolini, and van Sint Annaland (2013) concluded that in terms of hydrogen yield, it would be convenient to use an S/C ratio in the range of 2.5e3.0 but not higher. No trace of CO was detected in the permeate hydrogen even at temperatures of 630 C using Pd membranes.…”