In designinig a tank of SS 316 L in

[mecengr]

In designinig a tank of SS 316 L in service of a combination of H2SO4 & NaOH, wat corosion allowances should i keep. How shud i decide for the thickness of tank side walls & base? its dimensions r 16m*9m*1.8m.
can anyone help ?

 

[mcguire]

You need to specify max concentration, max temp, and what contaminants may be present.

 

[mecengr]

to mcguire,

its operating at ambient conditions with 4% H2SO4, 2% NaOH & dilute NaCl. If i use SS316l, will it be Ok?

thanks.

 

[mcguire]

Yes, it will be okay. Sedriks gives the corrosion rate at less than 0.1g per square meter per day or 0.001 inch per year.

 

[Golflinks]

Related Question >mcguire; Since the mixture will contain dilute NaCl is there any danger of SCC if the tank isn't subject to PWHT?
Just a thought!

 

[mcguire]

It would be good to know how dilute the NaCl will be. Its harmfulness varies exponentially with concentration.