What material is suitable for solutions of organic acids and alcohols with a pH of around 3.2
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What material is suitable for solutions of organic acids and alcohols with a pH of around 3.2? The design temperature is around 300°C, and the pressure is approximately CL300. Is it okay to use 304L in this case?
This post was last edited by qugd on 2016-12-17 at 10:39. For organic acids with significant chelating properties, careful selection of materials is necessary. Some small organic acids also have specific corrosive effects, so care must be taken in selecting the material. You can consult the material manual.
The pipelines are used to transport these materials; it is said that the organic acid content is below 0.5%, and they also contain various organic substances such as organic alcohols and aldehydes, all of which are likely of C7 or lower complexity. The temperature is around 100, with a maximum of 116°C. Does anyone have experience using it? My main concern is the pH value of 3.2; I think this is a quite high acidity level. Is it necessarily appropriate to use 304L in such cases? Could anyone recommend some selection guides on this topic? Thank you!