Multi-tube Pd–Ag membrane reactor for pure hydrogen production

摘要: Abstract An experimental apparatus carrying out a membrane process for producing pure hydrogen via ethanol steam reforming has been tested in order to measure the production by varying operative parameters such as temperature, pressure and sweeping mode. The consists of traditional fixed bed reformer, which performs reforming, multi-tube Pd–Ag reactor, where both water gas shift reaction separation take place. reactor uses permeator tubes wall thickness 50–60 μm, diameter 10 mm length 250 mm. experiments have carried with range 100–250 kPa, while reformer operated at temperature 690–890 °C feed water/ethanol molar ratio 10.5/1 flow rates between 200 500 g h−1. recovered shell side module vacuum pumping or inert (nitrogen) 350–400 °C. highest productions (about 3.5 NL min−1) attained feeding 500 g h−1 mixture recovering through 400 °C.