Liquid CO2 storage tank - material and corrosion issue
Liquid CO2 storage tank - material and corrosion issue
(OP)
Dear all
Liquid co2 storage tank with 7 bar and -50oC.
Liquid co2 is almost 99%.
I know if there is no water, there is no risk of co2 corrosion.
However it is not sure, there is no water content.
Is it possible to use carbon steel and coating such as zinc silicate type?
Is it practical to calculate the corrosion rate with De Waard equation?
I really wonder is there any corrosion risk under current situation,(very low temperature)?
If you have any standard, rule, technical background or experience about it, it would be very helpful.
Liquid co2 storage tank with 7 bar and -50oC.
Liquid co2 is almost 99%.
I know if there is no water, there is no risk of co2 corrosion.
However it is not sure, there is no water content.
Is it possible to use carbon steel and coating such as zinc silicate type?
Is it practical to calculate the corrosion rate with De Waard equation?
I really wonder is there any corrosion risk under current situation,(very low temperature)?
If you have any standard, rule, technical background or experience about it, it would be very helpful.





RE: Liquid CO2 storage tank - material and corrosion issue
RE: Liquid CO2 storage tank - material and corrosion issue
the liquid CO2 bullets we had (worked at a site where we produced/recovered ~600 Ton / Day from an ammonia process a decade ago) we used mole sieve to remove any water and condensed and stored the Liquid CO2 at about -15°F and ~ 200 psig. memory might be a bit fuzzy on exact temp and pressure but you can look it up easy enough.
regarding leak/depressurization, we had it in just relatively mild carbon steel. if you get a major leak/depressurization, you are headed for a solid anyways. besides, the coincident temperature pressure should not be an issue. we were always more concerned with loss of refrigeration than a leak.
RE: Liquid CO2 storage tank - material and corrosion issue
http://
It does happen.
RE: Liquid CO2 storage tank - material and corrosion issue
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: Liquid CO2 storage tank - material and corrosion issue
thanks for the info. did the event you cited occur because of the CO2 essentially undergoing a rapid boiling similar to a BLEVE. May I cite:
http://www.criticalprocesses.com/BLEVE.htm
http:/
would a better metallurgy protect against that type of boil-off or is it a relief device sizing question?
thanks.
RE: Liquid CO2 storage tank - material and corrosion issue
RE: Liquid CO2 storage tank - material and corrosion issue