Looking for detection method of mixed acid in hydrogen fluoride production process
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During the reaction of concentrated sulfuric acid and fluorite powder to produce hydrogen fluoride, the feed of concentrated sulfuric acid contains a mixture of 105 acid, 98 acid, HF, moisture, sulfur trioxide, etc. How can I accurately measure their concentrations?
Can you tell me what the status code is in your sample? Is this substance dissolved in sulfuric acid? It should be possible to do it using chemical analysis.
This post was last edited by qugd on 2017-1-19 10:42. How could the same sulfuric acid contain 105 acid, 98 acid and sulfur trioxide at the same time? First of all, sulfur trioxide is calculated by using the measured sulfuric acid concentration. Knowing the acid concentration, the moisture content is basically determined (other trace impurities are not considered). In the specific production process, what should be concerned about is only the concentration of sulfuric acid, and the determination of the concentration of fuming sulfuric acid will be used to prepare a suitable acid for production. If you want to determine impurities in sulfuric acid, or the composition of mixed acids, it is best to use ion chromatography, so that most of the main acid radicals can be separated and analyzed at once.
What is actually detected is fluoride ions, moisture, sulfate and possible free sulfur trioxide.