10% NaOH, material selection at 250°C
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Design conditions for the reaction vessel: temperature 250°C, pressure 3.0 MPa; the medium is a 10% NaOH solution. What material would be suitable? Which is better, titanium or nickel?
Among all metal materials, silver has the best corrosion resistance to sodium hydroxide, followed by nickel. Both silver and nickel can resist sodium hydroxide at all concentrations and temperatures, even in its molten state.
You might want to take a look at CZ100
Considering economic investment and corrosion resistance, 316L material should be sufficient
Nickel 200, NAOH-10% at 88 degrees: corrosion rate of 0.003 MAX. TI, NAOH-10% in a boiling state: corrosion rate of 0.02. The unit for corrosion rate is MM/YR
Tetrafluoride is fine at this operating temperature
Since there is no proper basis for selecting corrosion-resistant materials under such conditions, it is possible to conduct tests first and then make a selection.