reactive titanium anode
Titanium anode is the anode in titanium-based metal oxide coating. According to its surface catalytic coating, it has oxygen evolution function and chlorine evolution function respectively. General electrode materials should have good conductivity, small pole distance change, strong corrosion resistance, good mechanical strength and processability, long life, low cost, and good electrocatalytic performance for electrode reaction. At present, titanium is the metal that can best meet the above comprehensive requirements. Industrial pure titanium TA1\ TA2 is generally used.
The functions of the metal oxide coating on the titanium anode are: low resistivity, good electrical conductivity (titanium itself is not conductive), stable chemical composition of the noble metal coating, stable crystal structure, stable electrode size, good corrosion resistance, long life, and good electrocatalytic performance, which is conducive to reducing the overpotential of oxygen evolution and chlorine evolution reactions and saving electric energy.
1. Titanium anode has a long working life. In the chlor-alkali industry, the metal anode is resistant to chlorine and alkali corrosion, and the anode life has reached more than 6 years, while the graphite anode is only 8 months.
2. It can overcome the dissolution problem of graphite anode and lead anode, avoid contamination of electrolyte and cathode products, and thus improve the purity of metal products.
3, can improve the current density. Diaphragm production of chlor-alkali, the working current density of the graphite anode is 8A/dm2, titanium anode can be doubled, up to 17A/dm2, so that in the electrolysis plant, electrolytic cell under the same conditions, the output can be increased by 1 times, improve the capacity of a single cell, effectively improve the labor production efficiency. When electrolysis at high working current density, the use of titanium anode is more appropriate.
4. Due to the use of metal anode, high temperature and high current density operation of the chlorate electrolyzer is possible. The use of metal anode improves the structure of the electrolyzer, reduces power consumption, and accelerates the chemical reaction of hypochlorite gas chlorate, thereby improving production performance.
5. With DSA, the design concept and operating conditions of the mercury method and the diaphragm salt electrolyzer can be improved, and the energy consumption can be reduced. The low overpotential characteristics of DSA, the bubbles on the surface between the electrodes and the electrodes are easy to eliminate, which is an important reason for the reduction of the bath voltage of the metal anode electrolyzer.
6, the size of the anode is stable, the distance between the electrodes does not change during the electrolysis process, which can ensure that the electrolysis operation is carried out under the condition of stable bath voltage.
7. It can avoid the short circuit problem caused by the deformation of the lead anode, thus improving the current efficiency.
8. Titanium anodes are lightweight and can reduce labor intensity.
9. Switches are easy to make and can be made with high accuracy.
10. In chlor-alkali production, the use of titanium anode results in high product quality, high purity of chlorine gas, no CO2, and high alkali concentration, which can save heating steam and energy consumption.
11. It has strong corrosion resistance and can work in many highly corrosive electrolytic media with special requirements.
12. The base metal titanium can be used repeatedly.
13. The appearance of metal anodes enabled the design and industrialization of the latest ion membrane electrolysis technology that has recently emerged in the chlor-alkali industry.
Shaanxi Kaida Alibaba Website
Shaanxi Kaida Online Mall
