jmh80
Well-known member
I'm a Process Engineer for a Membrane Separation Systems Company. I design, build, and implement systems that use membranes as a way to separate out gases like Hydrogen, Nitrogen, and Natural Gas.
Degree: B.S. Chemical Engineering
We have a Cold Box (plate and frame exhanger with 6 passes -made of Al) to separate H2 from a myriad of olefine/parafin compounds - hydrogen drum is down to -265 F.
The H2 is generally used to hydrotreat motor gasoline/diesel to remove sulfur. (Also to remove sulfur and foulant olefins from a benzene stream.)
We need a membrane on a fuel stream we separate into polymer grade ethylene - but a retrofit of the equipment would be really expensive (and we make a TON of money taken fuel value feed and upgrading to polymer grade olefins).