Hydrogen for Start Up heating medium

[Noose]

Hello

I am looking at start up of a new facility where the available medium to warm a reactor and its catalyst is H2. I know that H2 is not typically used as a heat carrier but in this hydro treating service it is available without needing extra facilities. The problem is the flow is small and the reactor....big. I have had general advice that hydrogen isn't really a suitable media for this but if I look at h2 its heat capacity is high per unit mass versus other sources available. Calcs show it will work but takes a few shifts. Any general advice about what the specific concerns are with h2 are greatly appreciated! Thanks

 

[25362]

Don't know about the catalyst, but if is based on sulfides, once through hydrogen may deactivate it by removing sulfur producing H[sub]2[/sub]S leaving behind the bare metals. The cat supplier should be consulted about this subject.