CAUSTIC SODA FLAKES PRODUCTION

Caustic soda flakes, also known as sodium hydroxide flakes, can be produced through several methods, including:

1. Chlor-alkali process: This is the most common method used to produce caustic soda flakes. It involves the electrolysis of salt brine (NaCl) to produce sodium hydroxide (NaOH), chlorine gas (Cl2), and hydrogen gas (H2). The sodium hydroxide is then collected as flakes or pellets.
2. Membrane cell process: This is a variation of the chlor-alkali process that uses a membrane to separate the anode and cathode compartments, preventing the mixing of chlorine and sodium hydroxide.
3. Diaphragm cell process: This is another variation of the chlor-alkali process that uses a diaphragm to separate the anode and cathode compartments. The diaphragm is typically made of asbestos or a polymer material.
4. Mercury cell process: This is an older method of producing caustic soda flakes that uses a mercury cathode to produce sodium amalgam, which is then reacted with water to produce sodium hydroxide and hydrogen gas. However, this method has fallen out of favor due to the environmental concerns associated with the use and disposal of mercury.

Overall, the chlor-alkali process and its variations are the most common and efficient methods for producing caustic soda flakes on an industrial scale.

But the Caustic soda flakes production process mostly would be from the electrolysis of an aqueous solution of Na Cl or Brine in one kind of electrolytic container.

For example in Mercury cell process will using from a stream of mercury as Cathode and produced Sodium will combine with water and will produce Sodium hydroxide or Caustic soda liquid and in next process, the electrolyte will move from Anode to Cathode and by moving across Diaphragm that made with Mountain Cotton or any other Membrane materials the productions of Anode and Cathode will separate from together. Both processes will produce Sodium and Chlorine Gas.

The oldest production process of the Caustic soda flakes process is from Soda and Lime in this process soda in Reaction with Sodium carbonate will change to Caustic soda and finally, by evaporating process, the Caustic soda flakes will produce.