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H2 recovery with membrane

H2 recovery with membrane

H2 recovery with membrane

I'm looking for a membrane separation equipment that can purify H2 (from 60% to approx. 99%), other gases in the stream are CO,H2O,CO2 and N2.
temp: are initally 800oC, but can be cooled
pressure: atmospheric (can be compressed)

Anyone who knows a company who can deliver this? I'm espacially interested in ceramic membranes if they can handle the temp.

RE: H2 recovery with membrane

Separating hydrogen from reformate, are we?  Is your product the hydrogen, or is it the reformate?  You forgot to mention a key parameter:  pressure.  What's your feed pressure, and required/available discharge pressure for the hydrogen?  Any membrane which you plan to use will of course have a significant pressure drop across it.

I don't have any vendors to suggest to you, but there are membrane suppliers out there with a variety of membranes (metallic and otherwise) for this job.  I think you can count on the need for cooling the reformate a long way below 800 C, though.

RE: H2 recovery with membrane

Some vendors for H2 separation.

Air Liquide [my choice, OTOH they pay me to say that  *-)]
Air Products

these are all polymeric membranes and there are probably others.  Last I checked, there are no fully commercialized ceramic membranes for gas separation.  Metallic membranes are available but are aimed at ultra high purity applications (tritium/helium, GC H2 etc) As they use Pt/Pd as the membrane, I'm not sure passing your stream over them would produce reactions anyway.  

Polymeric membranes means cooling to 80-90° C, and a compression step, so the economics of this versus competing technologies are unclear.  

I would try H2 companies (such as AP and AL), and the membrane engineering section of eng-tips, where I think this was discussed once.

Dave Hasse
(see, I told you they pay me to say that)

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