98-99% Sulfuric Acid Tank (Material selection)
98-99% Sulfuric Acid Tank (Material selection)
(OP)
Dear colleagues:
Simillar to past thread related to 93%, i'm in a simillar case but with higher concentration. I must design a tank for this kind of content and i'm thinking to use standard carbon steel (A-516-60)as material. I was reading about their effect upon carbon steel and the explanation is the almost "passivating effect at low velocities", could anyone explain me better this matter or indicate me where I can obtained it.
Thanks in advanced for your inestimated help and efforts.
Best regards
Luike
Simillar to past thread related to 93%, i'm in a simillar case but with higher concentration. I must design a tank for this kind of content and i'm thinking to use standard carbon steel (A-516-60)as material. I was reading about their effect upon carbon steel and the explanation is the almost "passivating effect at low velocities", could anyone explain me better this matter or indicate me where I can obtained it.
Thanks in advanced for your inestimated help and efforts.
Best regards
Luike





RE: 98-99% Sulfuric Acid Tank (Material selection)
this is a very simple explanation.. for further explanation i suggest you to look at shreir book on corrosion or hulig..
S.
Corrosion Protection & Corrosion Control
RE: 98-99% Sulfuric Acid Tank (Material selection)
Basically, that's not the problem, at this hour, the point is determining which will be corrosion rate. Bibliography recommends between 0.13 to 0.5 mm/year, have you any expirience related to?. For to design , i assumed lower value because in a tank , i expect no higher velocities but
it is reasonably???
Thank again Strider6
RE: 98-99% Sulfuric Acid Tank (Material selection)
Some threads to review
thread124-141074: Sulphuric Acid Tank Vents
thread135-123720: H2SO4 96% material selection
among others....
RE: 98-99% Sulfuric Acid Tank (Material selection)
As a side thought, if your tank is small enough, is plastic an option for the tank? It should be cheaper and easier than a steel tank if it's acceptable.
RE: 98-99% Sulfuric Acid Tank (Material selection)
RE: 98-99% Sulfuric Acid Tank (Material selection)
carbon steel is noramlly used for high concentrated sulfuric acid and the reference i've is that the velocity should be lower than 0.9 m/s or 3 ft/s. For higher velocity, pumps for example is necessary to use corrosion resistant alloys.
Regarding the corrosion rate there are isocorrosion curve for carbon steel and the range normally is 0.15 to 1.0 mm/yr but is very denpendent on velocity , temperature.....
these reference can guive u some good advice on materials selection for Sulfuric Acid.
http:
http://www.genchemcorp.com/pdf/tsr5078.pdf
htt
hope this help u
S.
Corrosion Protection & Corrosion Control
RE: 98-99% Sulfuric Acid Tank (Material selection)
http://www.norfalco.com/safety/storage_tanks.htm
http
S.
Corrosion Protection & Corrosion Control
RE: 98-99% Sulfuric Acid Tank (Material selection)
I'm very surprised for your promptly help in this matter, really thanks for your effort. At this moment your info is totally enough for to finish this job.
Thanks to rest of colleagues .
Luike
RE: 98-99% Sulfuric Acid Tank (Material selection)
one of the tools in my website is a Corrosion Search Engine based on a tool of Google that allow you to define the sites where make searches so to have more targeted resuslts.. now it contains approx 250 website.. it can be useful as in this case...
feel free to suggest sites that you think should be included..
S.
Corrosion Protection & Corrosion Control