Industrial electrolysis, sodium chloride, for the production of sodium hydroxide. How to purify sodium hydroxide?
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After the electrolysis is complete, the solution contains two components: sodium hydroxide and sodium chloride. How to remove sodium chloride from inside it
It was taught by the chemistry teacher: adding barium hydroxide results in the formation of barium chloride precipitate. I have no experience with industrial production.
Is chemistry upstairs taught by the physical education teacher? There are two types of industrial caustic soda. The diaphragm process for producing caustic soda uses evaporation and concentration; in the presence of high concentrations of alkali, the solubility of sodium chloride is very low, leading to crystal formation, and what remains is relatively pure alkali. In the ion-exchange membrane process for caustic soda production, sodium chloride and sodium hydroxide are separated, resulting in an alkali that contains virtually no sodium chloride.
Evaporation concentration: Heating sodium hydroxide solution can corrode the container. What type of container can be used in industrial evaporation and concentration to avoid corrosion by sodium hydroxide? What is the evaporation concentration method? What is it used for in industry?
Currently, sodium hydroxide is no longer produced in China using the diaphragm method; instead, ion-exchange membrane electrolyzers are used. The selective permeability of these ion-exchange membranes enables the production of sodium hydroxide and hydrogen on the cathode side of the electrolyzer, while chlorine is generated on the anode side. The sodium chloride content in the resulting sodium hydroxide can be kept below 40PPM.
Who recommended this book to him? It’s driving me crazy. Actually, it’s also like there’s a mountain between different fields