In industrial sodium hydroxide production, the evaporation and concentration method is used to purify sodium hydroxide – how is this process carried out?
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For example, the evaporation concentration method, where the solution is heated to cause evaporation. Sodium hydroxide solution: when heated, the solution can corrode the container. What containers are used in industry? Solve this problem? There is also the process of evaporation concentration; how is it carried out exactly? Who can talk about it?
For MVR evaporators, carbon steel is sufficient
Won’t a hot sodium hydroxide solution corrode carbon steel? Its corrosivity is quite strong.
No, alkali solutions do not corrode metal; they only accelerate rusting.
It’s simply… nonsense. Everyone says they want it, but you insist you won’t. Are you a professional in this field?
I misread it; as the alkali concentration increases, its corrosiveness rises, and it indeed has corrosive properties. In that case, metals such as 20# steel, nickel, titanium, tantalum, and lead should be chosen. Let’s see how much was mentioned this time – any criticism is welcome.
The most common are 20# steel and nickel
:) It is better to be able to correct one’s mistakes; there is nothing better than that. A person’s character can be judged by just one sentence – well done!
It depends on the concentration and temperature; for high concentrations and high temperatures, nickel is the best choice