316 SSt and 5% sulfuric acid at 80 psi and 312F
316 SSt and 5% sulfuric acid at 80 psi and 312F
(OP)
I have been asked to design a vessel to withstand 5% sulfuric acid solution and 80 psi steam, we have a piece of 316L pipe so I am trying to calculate the corosion factor. Any link to a source of information would be appreciated.





RE: 316 SSt and 5% sulfuric acid at 80 psi and 312F
cheers,
gr2vessels
RE: 316 SSt and 5% sulfuric acid at 80 psi and 312F
Due to your temperature, corrosion rate of 316L will be doubtful.
In that case the use of an alloy duplex such as 2205 would be recommendable.
If you chose the proper polymer lining such as Belzona, maybe you can even use carbon steel on your shell.
cheers
luis marques
RE: 316 SSt and 5% sulfuric acid at 80 psi and 312F
RE: 316 SSt and 5% sulfuric acid at 80 psi and 312F
I've found this publications:
http://www.al6xn.com/SSSguide.pdf
at page 8, there is a graph with isocorrosion curve for SS 316 in Sulfuric Acid. The curves stop at the boiling point that is below your op temp.
Based on the data on the graph, it seems that the corrosion rate should be in the range 50-200 mpy(milly inch per year).
I think it's too much for your pipe.
Hope this help
S.
http://www.corrosionist.com
RE: 316 SSt and 5% sulfuric acid at 80 psi and 312F
Austenitic Cr-Ni-Mo Stainless Steel (17-12-3; 316L/ 317L) sulfuric acid, H2O4S, conc 5–25%, Temp 125–225 °F, Corrosion Rate >50 mpy
Strider
http://www.corrosionist.com
RE: 316 SSt and 5% sulfuric acid at 80 psi and 312F