How should materials be selected for reactors with varying pH values?
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How should materials be selected for reactors with varying pH values? For example, in a \"acid-neutralization tank\", the feed is alkaline, and hydrochloric acid is added gradually to make it neutral. Should such a tank take corrosion caused by alkalis into account only, or must it also consider corrosion from both alkalis and acids? In that case, should a material that is resistant to both acids and alkalis be used?
Cloride resistance also needs to be taken into account; when hydrochloric acid is added, the reaction vessel must have an acid- and alkali-resistant lining, otherwise the hydrochloric acid will react with the inner wall of the tank. Enameled or PTFE linings can be used for this purpose
List the ranges of medium composition and conditions, and inquire with the analyzer manufacturer through official channels. Questions that are phrased in such a brief manner either result in those who understand the topic refusing to reply, or the responses provided are basically useless information.