Stainless steel for organic waste pulpe

[Rachbay]

For an organic waste pulp storage tank with a temperature of 65°C and a chloride concentration around 250 ppm is SS-316 a good choice. I think that duplex 2205 is more suitable but but my client is convinced that using SS316 is sufficient.

 

[TugboatEng]

Are there solids that will settle in the bottom of the tank for extended periods? If so, 300 series stainless steel is not acceptable.

 

[EdStainless]

Even if this was clean water at 65C with 250ppm Cl 316 would not be suitable.
This is a good example of where 2205 had distinct advantages.
Give that this is a tank and that 2205 is so much stronger than 316L I would expect the cost difference to be very minor since they will use a lot less metal..
You will need to be more demanding of the fabrication welding practices with 2205.

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P.E. Metallurgy, consulting work welcomed

 

Ditto, 316 is not up to the task.

"Everyone is entitled to their own opinions, but they are not entitled to their own facts."

 

[0707]

I agree with all precedent guys, do not use SS TP316 Rachbay!

luis

 

[TugboatEng]

Just to go outside of the box, this seems like a good application for a box made of FRP. If there is concern of abrasion, perhaps a skim coat of Belzona 1321 or similar abrasion resistant epoxy would create an ideal solution?

 

Just to go outside of the box

I saw what you did there, but the problem is inside the box.

"Everyone is entitled to their own opinions, but they are not entitled to their own facts."