Material for Calcium bromide and Hydrogen bromide
Material for Calcium bromide and Hydrogen bromide
(OP)
I am selecting pipe materials for 50% Calcium Bromide and hydrogen bromide. Can any one with experience recommend the materials suitable for these service?
Thanks.
Thanks.





RE: Material for Calcium bromide and Hydrogen bromide
Hydrogen bromide as a liquid or vapour?
RE: Material for Calcium bromide and Hydrogen bromide
wet hydrogen bromide (vapor).
One more questions is the material for hydrobromic acid.
Thank you so much!
RE: Material for Calcium bromide and Hydrogen bromide
About your only option for bromides above room temp.
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Plymouth Tube
RE: Material for Calcium bromide and Hydrogen bromide
The trouble will be if you're neutralizing HBr or HBr acid with calcium hydroxide- Ta doesn't like strong bases, or rather likes them a little too much. Ta has corrosion resistance similar to glass- the same weak points from a corrosion perspective that glass has, Ta tends to share.
RE: Material for Calcium bromide and Hydrogen bromide
Thanks for comments. So how about 50% Calcium Bromide?
RE: Material for Calcium bromide and Hydrogen bromide
If it's neutral (pure water to which pure CaBr2 is added will be neutral), then this is basically a solution very high in bromide ion. Austenitic stainless steels are probably out even at room temperature. Titanium would probably be OK even at elevated temperatures. You'd need to do more research before considering superaustenitics or duplexes.
At room temperature, nonmetallics would still be your best bet with any of these materials. They'd be corrosion immune rather than merely resistant.
RE: Material for Calcium bromide and Hydrogen bromide
RE: Material for Calcium bromide and Hydrogen bromide
At moderate temps some high alloy SS will work, but the limits are hit quickly.
An alloyed Ti grade is probably called for.
Look at the Timet corrosion guide.
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Plymouth Tube
RE: Material for Calcium bromide and Hydrogen bromide
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