Material selection for containers containing HCL, H2S, and HCN media
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This post was last edited by sjq523855436 on 2015-9-2 11:42. Mole fractions of the components: H2S: 0.00048, HCN: 0.00112, HCL: 0.00445 (equivalent to 445 ppm)； Design temperature: 70, pressure: 1.0 MPa, diameter: 3600. What material is suitable to choose? (I checked the corrosion manual, and it seems that neither carbon steel nor stainless steel is suitable). I hope experts can give me some advice. . . . .
Does no one care about my question? :( Take the lead first
Please help to support this post; I hope some expert can give some guidance
Stainless steel is not suitable for use with HCL; low-alloy materials can be used, but in the presence of H2S, overall heat treatment after welding is recommended. If possible, glass-lined or ceramic-lined equipment should be chosen.
Enameled steel was also considered, but it’s not suitable due to the somewhat complex internal structure. :(
I’ve encountered this before; under very harsh operating conditions, duplex steel was considered as an option. Since your temperature isn’t very high, you can take a look at this thread: http://bbs.hcbbs.com/thread-1432547-1-1.html. I hope this helps you.
Are you kidding me? The connection is this post of mine:o
...I didn’t see it. . . .