For oxidation reactions involving or producing nitric acid at a concentration of 20–70% at room temperature, should an enamel-lined reactor be used?
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Reaction conditions (pilot scale): Reaction material 1, main raw material containing a small amount of chloride ions； 2. 65-68% nitric acid ； The reaction temperature is 15-30 degrees. During the reaction, as nitric acid is gradually consumed, its concentration drops to around 20%. Post-treatment: Dilute with a large amount of water, then add sodium hydroxide drop by drop for neutralization; in this way, the nitric acid concentration will gradually drop to 0. Experts and seasoned workers, in such a situation, which is more suitable – a 304L reactor or one lined with enamel? Thank you!
Okay, thank you! Is it true that high temperatures and the absence of chloride ions require the use of stainless steel? Why is stainless steel needed at high temperatures? Thank you to all the teachers for answering my questions!
Enamel can also be used when the temperature is high