Burning Off a Hydrogen Process Stream
Burning Off a Hydrogen Process Stream
(OP)
I am in the midst of designing a furnace which will use hydrogen as a process gas. I am attempting to locate a supplier of a system to burn off said hydrogen during the process. My problem is that I am required to burn off both a steady stream of hydrogen (1-10 SCFM) as well as a surge of hydrogen which can be a maximum of 150 SCFM decaying to zero in approximately 5 minutes (this flow represents the exhaust from the 2" exhaust line of a vacuum pump while it removes the hydrogen within the vessel at the end of the process cycle). I would like to be able to use a common burn off system to accomplish the burn off of both process streams. I have located a "glow-plug" igniter type system for the 1-10 SCFM process requirement, but my problem is that I am inexperienced in locating burn off systems that are capable of 150 SCFM. Can anyone suggest any companies that can engineer systems with integrated flame / igniter safety controls to handle these flow rates? (Even better if they have one on the shelf!) It can be either the glow plug igniter or piloted flame types. The Hydrogen stream will be at a maximum of 250F.





RE: Burning Off a Hydrogen Process Stream
RE: Burning Off a Hydrogen Process Stream
RE: Burning Off a Hydrogen Process Stream
RE: Burning Off a Hydrogen Process Stream
Best regards
Morten
RE: Burning Off a Hydrogen Process Stream
RE: Burning Off a Hydrogen Process Stream
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If we learn from our mistakes I'm getting a great education!
RE: Burning Off a Hydrogen Process Stream
RE: Burning Off a Hydrogen Process Stream
RE: Burning Off a Hydrogen Process Stream
Your problem is the turn-down range. The range is too large for a device to be optimally sized. What you probably need is a small shielded flare. The smallest one you can buy will probably have a pilot burner requiring a fuel gas flow larger than your normal flow.
If you find the right unit, let me know and I'll keep it in mind for the next time I need that particular problem solved. It's one that comes up frequently in the small plants we do.
RE: Burning Off a Hydrogen Process Stream
RE: Burning Off a Hydrogen Process Stream
Thanks for your reply. I did manage to get in touch with a vendor who sells "small shielded flares" as you have suggested. Your response is spot on with the conversation I had with them. The immediate focus was on the turndown ratio. I hope the pricing comes in at a reasonable figure. Anyhow, thanks for your input. Everyone else, thanks for trying to be green, but a fuel cell system for this turndown ratio would be amazingly expensive. If the customer wants to go green, it wil have to be on their dime.
RE: Burning Off a Hydrogen Process Stream
I will probably not be using these folks due to cost only (still looking for an alternate supplier), but NAO in Philadelphia looks like a potential player in the small shielded flame market and the owner is a really interesting guy whom is willing to talk tech with you any time you want. Just an all around good guy to deal with from my experience. I've attached a quote for you to look at.
RE: Burning Off a Hydrogen Process Stream
RE: Burning Off a Hydrogen Process Stream