How is 99.8% hydrochloric acid produced on an industrial scale?
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As the title says. We have a lot of hydrochloric acid with a low concentration in the factory at the moment; I’m not sure if it’s possible to concentrate it to 99.8%.
In industry, the concentration of hydrochloric acid usually does not exceed 38%, because above this concentration, hydrochloric acid begins to release hydrogen gas. Furthermore, excessively high concentrations of hydrochloric acid will generate a large amount of heat, which may pose a danger. So, generally speaking, we are unable to produce 99.8% hydrochloric acid. .
No way, we buy products with a purity of 99.8% in order to purify them and produce hydrogen chloride with a purity of 99.999%.
For higher concentrations of hydrochloric acid (such as 99.8%), the common methods are direct synthesis or absorption. Direct synthesis involves reacting chlorine and hydrogen at high temperatures to produce hydrogen chloride gas, which is then condensed to yield liquid hydrochloric acid of high concentration. The absorption method involves dissolving dry hydrogen chloride gas in water to obtain a high-concentration hydrochloric acid solution. If your factory has hydrochloric acid at a low concentration and you wish to increase it to a higher level (such as 99.8%), you can consider using methods such as distillation or adsorption for concentration; however, specialized equipment and technology are required to ensure the safety and efficiency of this process. Design a suitable purification process reasonably. .
It seems that this 99.8% refers to the purity of hydrogen chloride gas; it definitely isn’t hydrochloric acid: lol
Above 37%, hydrogen chloride gas will volatilize in large quantities; therefore, the hydrochloric acid concentration cannot reach such a high level.
Hydrochloric acid is an aqueous solution of hydrogen hydride; however, due to the volatility of hydrogen chloride, it cannot dissolve in water to unlimited degrees (i.e., they are not completely miscible). Under normal conditions (i.e., everyday situations), the maximum concentration of hydrochloric acid can reach 37–38% (depending on environmental temperature and pressure). This is the concentration of concentrated hydrochloric acid that people can obtain. As for 99.8% hydrochloric acid, such a thing does not exist; liquid or nearly pure hydrogen chloride is not called hydrochloric acid, but rather liquefied hydrogen chloride. 99.8% of gaseous or liquid hydrogen chloride can be produced and obtained.
I’ve never heard of such a high concentration of hydrochloric acid