Is it technically feasible to change an ion membrane cell that produces 32% alkali to one that produces 30% alkali, and will this have any impact on the ion membrane?

Reply to 1# Weige668: For a long time, people have been striving to increase the concentration of the caustic solution in the electrolytic process for producing caustic soda – from 10% in diaphragm cells, to 20% in early ion-exchange membrane cells, to 32% at present, to 35% in the future, and above 40% in experimental settings. The goal is to save energy and reduce the costs associated with concentration. The original poster doesn’t understand why the concentration should be reduced Lowering the concentration is no problem at all; just add more water. The concentration of ion-exchange membrane caustic soda is limited by the water migration rate through the ion-exchange membrane and the properties of the carboxylate layer. Preventing hydroxide ions from migrating to the anode chamber represents the biggest technical challenge; therefore, the concentration of caustic soda cannot be increased indefinitely. Yet, increasing this concentration has always been a goal that people strive to achieve.

There’s no problem with the process; just add more water. But I just can’t understand it: since everyone is now striving for high current efficiency along with high alkali concentrations, why do you still want to reduce them?

Did the salesperson say that the customer will only accept 30% in physical alkali? Does the extra amount not count? We have also encountered situations where sales are not calculated on a percentage basis. It’s better when the cathode concentration is low; power consumption is then lower. .

Changing the production to 30% alkali current efficiency may be affected, and the ion membrane is prone to bubbling if not controlled properly.

Reply to 1# Weige668: If it is merely to meet the user’s requirements, it is recommended to install a mixer in the channel through which the liquid alkali is discharged, feed pure water into it, and use proportional control for automatic regulation. I do not recommend changing the process parameters, as this involves the DCS system and can have a significant impact; it may also affect the accuracy of the employees’ operations.

The electrolyzer is not affected; it’s just that power consumption is slightly higher. More pure water needs to be used. Currently, 30% caustic soda is easier to sell in the market, and its price per 100 grams is higher, so 30% concentration is chosen for production.

It is also not recommended to increase the amount of pure water added in order to reduce the alkali concentration; instead, the method suggested on the sixth floor can be adopted, which involves adding pure water to the pipes leading to the finished product tank area in order to lower the alkali concentration.

Titanium plating: 1. PVD coating; 2. PVD coating is physical vapor deposition. Stainless steel coating, also known as stainless steel titanium/zirconium coating, involves forming an ionic layer of titanium/zirconium compounds on the surface of stainless steel inside a vacuum chamber; this layer does not fade over time in outdoor conditions. 3. Working principle 4. In a high-temperature, vacuum titanium and gold furnace, titanium and zirconium metals. The glow discharge of an inert gas is used to ionize metal or alloy vapors; the ions are accelerated by an electric field and deposited on a negatively charged stainless steel plate, thereby forming a metal film with rich and vibrant colors. 5. PVD coating with enduring color. 6. Unlike traditional plating methods, the PVD coating boasts unique properties: high hardness, resistance to abrasion, no peeling or fading, excellent corrosion resistance, and immunity to ultraviolet rays. As a result, the PVD-coated stainless steel produced by Honglin Company is used as a distinctive decorative material in various decoration applications. 7. Unique properties: 8. Remains colorfast under intense sunlight, in humid conditions, and in typical urban environments. 9. It does not peel, flake off, or fade under ultraviolet light. 10. Many colors can be plated on various textured and patterned surfaces. 11. Color range of PVD coating: 12. Gold, brass, rose gold, silver white, black, bronze, copper, blue, etc. 13. Surface characteristics: 14. Appearance: Pure metal film, with a substantial and luxurious metallic luster. 15. Corrosion and oxidation resistance: does not fade, resistant to scratches. 16. Versatility: The main surface decoration techniques for both indoor and outdoor use. 17. Good ductility: It does not easily break, peel, or develop surface scratches when bent by more than 90 degrees. 18. Resistance to wear: Hardness coefficient exceeds 80RC. 19. Durability: The surface polish can last for over 20 years. 20. Cost-effectiveness: It saves (reduces) the time and expenses required for cleaning and polishing ordinary copper (gold) plated sheets; a soft cloth and glass cleaner are sufficient. 21. Resistance to damage: Handwriting and markings are easily erased. 22. Environmental adaptability: Prevent the emission of harmful substances. 2. Product description: Iridium-tantalum coated titanium anode. The iridium-tantalum coated titanium anode is a type of insoluble anode; the platinum-iridium coating bonds firmly to the titanium substrate. Compared to electrodes with ordinary coatings, it offers improved resistance to intergranular corrosion and enhances the durability of the area where the titanium substrate meets the coating. Available shapes include: plate electrodes, tube electrodes, mesh electrodes, rod electrodes, wire electrodes, etc. ● Excellent corrosion resistance ● Long service life of the electrodes ● Good electrocatalytic performance ● Strong oxidation resistance ● Good reverse polarity performance ● The base metal titanium can be reused multiple times ● The shape of the electrodes can be designed according to customer requirements ● Capable of withstanding higher current densities ● High electrolysis efficiency. Contact QQ: 798346317