Mikä on titaani anodi, titaanidioksidianodi, DSA titaani anodi, mitkä ovat sen sovellusalueet?
The academic name of titanium anode is DSA anode, also known as titanium noble metal oxide anode, is a kind of insoluble anode. A novel electrode with industrial titanium as substrate and precious metal oxide as main component is coated by a special process. At present, it has been widely used in various fields, such as chemical industry, electroplating, water treatment, cathodic protection, environmental protection, Marine anticorrosion and other industries and fields.
(1) Application of coated titanium anode in chemical industry
1. Chlor-alkali industry
2, chlorate production
3, hypochlorite production
(2) Application of coated titanium anode in industrial wastewater treatment
Electrolytic oxidation or electrochemical treatment of industrial wastewater, including industrial water, factory wastewater treatment process, electrode not only plays the role of transmitting current, but also plays a catalytic role in the oxidation of organic matter degradation, in this process because it does not cause secondary pollution, known as green water treatment. In the process of reaction, the anode makes the organic matter in sewage through electrochemical conversion, directly or indirectly into CO2 and water, which can effectively degrade COD and remove ammonia nitrogen.
(3) Application of coated titanium anode in the production of electrolytic silver catalyst
Formaldehyde and acetaldehyde are important chemical raw materials. Using electrolytic silver catalyst can make the production of formaldehyde achieve high efficiency and low energy consumption. However, in the past, electrolytic silver catalysts were produced using platinum electrodes, which are expensive and in short supply. Because titanium anodes are easy to manufacture, relatively cheap and have good corrosion resistance, they have been used in production. The coated titanium anode showed good conductivity and corrosion resistance in production, and the quality and activity of the produced silver catalyst met the requirements.
(4) Application of coated titanium anode in electrolytic extraction of non-ferrous metals
The key technology of electrolytic extraction of non-ferrous metals lies in the selection and installation of electrodeposition anode, which requires the selected anode to be corrosion-resistant, stable, capable of long-term use, and has good electrocatalysis, so as to reduce the potential and tank voltage in the anode reaction process. At present, titanium anodes coated with a mixture of ruthenium, iridium and platinum series have been widely used in metal extraction by electrodeposition in China.
(5) Application of coated titanium anode in electrolytic preparation of ionized water (acidic and alkaline ionized water)
The benefits of alkaline ionized water on the human body are not described. When titanium anode makes ionized water, tap water is filtered through the filter element and enters the electrolytic cell generating ionized water. After electrolysis, alkaline ionized water is produced in the cathode region and acidic ionized water is produced in the anode region. Select the excellent performance of titanium anode, electrolytic ionized water can be compared with platinized electrode, and the price is cheap, long service life, can be put into production.
(6) Titanium anode for industrial electroplating
In the electroplating industry, the use of coated titanium anode can keep the plating solution in a stable state, is the electrode material with good acid corrosion resistance, especially in the application of gold plating, copper plating, chromium plating, rhodium plating, showing good performance.
(7) Application of coated titanium anode in cathodic protection
MMO coated titanium anode cathodic protection is a method to effectively protect metal from corrosion by external current. The life of anode is directly related to the life of the whole cathodic protection system. At present, domestic anode technology has been able to reach more than 50 years. And can adapt to sea water, fresh water, soil, desert and other environment. According to different environment and use conditions, it can be divided into MMO anode strip, MMO tubular anode, MMO bar anode, flexible anode, expanded mesh anode, etc.
(8) Application of coated titanium anode in organic electrolysis synthesis
With the development of oxide coated titanium anode technology, the range of oxygen evolution and chlorine evolution potential is increasing, which can adapt to maintain high stability under complex actual working conditions and avoid the oxidation of organic matter on the electrode surface. The improvement of oxide coating and process on electrode surface will also reduce the cost and make electrochemical electrode technology play a greater role in organic synthesis.
(9) Application of coated titanium anode in other fields
With the development of industrialization and the demand of the market, titanium anode has been used more and more in people's life, such as ion water cooler, hydrogen rich cup, disinfection washing machine, fruit and vegetable disinfection machine, portable household disinfection machine, etc., green environmental protection, good market prospect.
The anode size is stable, and the distance between electrodes does not change during the electrolytic process, so that the electrolytic operation can be carried out under the condition of stable tank voltage.
Low working power, so small power consumption, can save power consumption, DC power consumption can be reduced by 10% ~ 20%.
Titanium anode long working life, diaphragm production of chlorine gas industry, metal anode resistant to chlorine and alkali corrosion, anode life has reached more than 6 years, and graphite anode is only 8 months.
The solution of graphite anode and lead anode can be overcome, and the pollution of electrolyte and cathode products can be avoided, so the purity of metal products can be improved.
Can improve the current density. Titanium anode is suitable for electrolysis under high working current density.
In the production of chlor-alkali, after the use of titanium anode, the product quality is high, the purity of chlorine gas is high, the concentration of alkali is high, and the energy consumption is saved.
Strong corrosion resistance, can be in many corrosive, have special requirements of electrolytic medium work.
The problem of short circuit after deformation of lead anode is avoided and the current efficiency is improved.
Titanium anode light weight, can reduce labor intensity.
Using metal anode, high temperature and high current density operation of chlorate electrolyzer is possible.
Low overpotential, the surface between electrodes and electrode bubbles are easy to eliminate, which is an important reason for the voltage reduction of metal anode electrolytic cell.
Titanium anode is mainly used in electrochemistry and electrometallurgy two major industrial sectors. The use of metal anode electrolytic industries are: chlor-alkali industry, aluminate production, water electrolysis, hospital sewage treatment, domestic water and food utensils disinfection, industrial water treatment, steel galvanized plating chromium plating ruthenium plating, electrodialysis desalination, battery production, cathode protection, titanium fund is oxide coating. Applications include chemical industry, metallurgy, water treatment, environmental protection, electroplating, electrolytic organic synthesis and other industries.
What are the coating categories of titanium anode?
Coated titanium anode, is traditionally called DSA(Dimensionally Stable An2ode dimensional Stable anode), also known as DSE(Dimensionally Stable Elec2trode). The traditional anode materials are roughly divided into three categories: platinum, graphite and lead alloy anode. Platinum price is expensive, graphite and lead alloy anode high current electrolytic corrosion, poor corrosion resistance, oxygen evolution potential, electrochemical catalytic performance is low, high energy consumption, especially the anode toxic lead will be dissolved in solution, causing secondary pollution, and the coating performance decline. Application of DSA coated titanium anode DSA coated titanium anode is mainly used in electrochemistry and electrometallurgy two major departments.
Applications of DSA coated titanium anode include: chlor-alkali industry, chlorate production, hypochlorite production, perchlorate production, persulfate electrolysis, electrolytic organic synthesis, electrolytic extraction of non-ferrous metals, electrolytic silver catalyst production, electrolytic copper foil manufacturing, electrolytic oxidation recovery of mercury, water electrolysis, chlorine dioxide production, hospital sewage treatment, electroplating plant containing cyanide wastewater treatment, health Disinfection of living water and food utensils, power plant cooling circulating water treatment, dyeing and finishing wastewater treatment, industrial water treatment, electrolytic acid and alkali ionized water, copper plate galvanized, rhodium plating, palladium plating, gold plating, lead plating, electrodialysis desalination, electrodialysis method for tetramethylammonium hydroxide, molten salt electrolysis, battery production, cathodic protection, production of negative foil, aluminum foil Yang Polar oxidation, etc. Widely used in chemical industry, metallurgy, water treatment, environmental protection, electroplating, electrolytic organic synthesis and other fields. In recent years, in the surface treatment industry, the application of DSA coated titanium anode appeared a new trend.
