Chlor-alkali industry refers to the industrial process of producing chlorine gas and caustic soda (sodium hydroxide) by electrolyzing salt water. Electrolytic cells in the chlor-alkali industry generally use the diaphragm method or ion exchange membrane method, in which the choice of anode material is crucial, because it directly affects the efficiency of electrolysis and equipment life. Titanium anodes have been widely used in the chlor-alkali industry.
saturated NaCl (35%) solution
1000A/m2
Electrolysis with ion-exchange film(anode chamber and cathode chamber)
More than 5 years
(20000A/m2)
Reference Standard HG/T2471-2007Q/CLTN-2012
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Ruthenium-Titanium coated |
Less than or equal to 10 | 40 | <1.13 | 1mol/L H2SO4 |
Chlor-alkali industry test data:
1. Chlorine evolution potential : Less than or equal to 1.13v
2. Chlorine evolution polarizability: Less than or equal to 40mv
3. Strengthening life : Greater than or equal to 3000min, Current density 10000A/m2
Caustic soda is produced by electrolytic salt solution, chlorine gas is produced by anode, hydrogen and caustic soda are produced by cathode reaction. The application of our coated electrode in chlor-alkali production has the advantages of small loss, greatly reduced chlorine evolution potential and stable size and shape compared with graphite electrode. Compared with graphite electrode, the product has high quality, low energy consumption and high chlorine purity under the same electrolytic environment.
- Titanium has excellent corrosion resistance, which is particularly outstanding in the strong corrosion environment of the chlor-alkali industry. Compared with the traditional graphite anode, the service life of the titanium anode is greatly extended.
Ruthenium-Iridium coating (Ru-Ir)
Iridium-Tantalum coating (Ir-Ta) : This coated anode is suitable for ion-exchange membrane electrolyzers and has higher stability and durability.
Ruthenium-Iridium-Tin coating(Ru-Ir-Sn): Under certain electrolytic conditions, Ru-Ir-Sn coated titanium anodes have better performance.
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Since 2010
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456
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80+
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90+
In practical applications, electrolytic cells in the chlor-alkali industry usually use titanium anode and cathode grid plate structure. Titanium anode can ensure the stable production of chlorine and caustic soda during electrolysis, reduce equipment maintenance frequency and production downtime, and improve the economic efficiency of the entire process.
Titanium anode plays an important role in chlor-alkali industry, its excellent corrosion resistance, stable electrochemical performance and low overpotential characteristics make it an ideal choice for electrolytic cell anode materials. With the development of technology, the performance and application range of titanium anodes will also be further improved and expanded.
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