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1. The anode size is stable, and the distance between electrodes does not change during the electrolysis process, which can ensure that the electrolysis operation is carried out under the condition of stable cell voltage.
2. The titanium anode has a long working life. In the chlor-alkali industry produced by the diaphragm method, the metal anode is resistant to chlorine and alkali corrosion. The anode life has reached more than 3 years, while the graphite anode is only 8 months.
3. The working voltage is low, so the power consumption is small, which can save the power consumption, and the DC power consumption can be reduced by 10% to 20%. The main reasons for the low working voltage of titanium anodes are: 1) The overpotentials of active coated titanium anodes to chlorine and oxygen are relatively low. When salt water electrolysis produces chlor-alkali, the titanium anode has a low overpotential for chlorine, which is 140mV lower than that of the graphite anode at 1A/cm2; 2) It can reduce the "bubble shielding effect", and the bubbles generated on the surface of the metal anode are relatively small and rapidly detached, so that the electrode The aeration degree between the two electrodes is greatly reduced, the ohmic drop between the two electrodes is about 700mV, and the diameter of the bubble is about 3mm; 3) the resistance of the anode structure is reduced; 4) the distance between the electrodes is shortened.
4. The current density can be increased. In the production of chlor-alkali by the diaphragm method, the working current density of the graphite anode is 8A/dm2, and the titanium anode can be doubled to 17A/dm2. In this way, under the same conditions of the electrolysis plant and the electrolytic cell, the output can be doubled, which improves the The single-slot production capacity effectively improves labor productivity. When electrolysis is performed at high operating current densities, it is more appropriate to use titanium anodes.
5. Strong corrosion resistance, can work in many electrolytic media with strong corrosiveness and special requirements
6. It can overcome the dissolution problem of graphite anode and lead anode, and avoid the pollution of electrolyte and cathode products, thus improving the purity of metal products.
The titanium anodes produced by our company can be divided into tubular, plate, mesh, filament, ribbon and other forms from the shape, which are widely used in electrolysis, electroplating, sanitation, environmental protection, cathodic protection and other fields.
Chlorine evolution potential test environment: 2000A/m², 25℃, 310g/L saturated NACL solution
Oxygen evolution potential test environment: 2000A/m², 25℃, 0.5mol/L dilute H2SO4 solution
Coating thickness: in the range of about 8-12μm
Coating times: brush coating process, iridium series 18-22 times, ruthenium series more than 14 times.
Application industry: chlor-alkali industry, chlorate industry, hypochlorite industry, production of perchlorate, copper foil production by electrolysis, persulfate electrolysis, electrolytic organic synthesis, electrolytic extraction of metals, production of electrolytic silver catalyst, electrolysis Recovery of mercury by oxidation, electrolysis of water, production of chlorine dioxide, hospital sewage treatment, electroplating industry, disinfection of domestic water and food utensils, treatment of cooling circulating water in power plants, production of acid-base ionized water by electrolysis, chrome plating/plating of steel plates Palladium\gold plating\ruthenium plating, electrodialysis desalination of seawater, please refer to the website of Dongguan Shengruizi Company for details. The application fields of products involve chemical industry, metallurgy, water treatment, environmental protection, electroplating, electrolytic organic synthesis, and other electrolytic industries
1. Titanium anode for electroplating: The insoluble anode for electroplating is coated with a noble metal oxide coating with high electrochemical catalytic performance on the titanium substrate (mesh, plate, strip, tube, etc.), and the coating contains high stability. Generic valve metal oxide. The new insoluble titanium anode has high electrochemical catalytic energy, and the oxygen evolution overpotential is about 0.5 V lower than that of the lead alloy insoluble anode.
2. Titanium anode for electrolytic copper: Coated titanium anode not only overcomes the disadvantage of unstable size of lead anode, reduces energy consumption, improves the uniformity of copper foil thickness during the production process, but also facilitates maintaining the purity of the electrolyte. Stabilized the internal indicators of copper foil products. Compared with lead anodes, titanium anodes are more suitable for high-density current applications (not less than 8000/Am2), and can produce high-quality electrolytic copper foil products with narrow electrode spacing (about 5mm). (The test proves that the sulfuric acid ion system is 120g/L, 9000/m2. Under the condition of less than 40 degrees Celsius, continuous operation for 332 days, the cumulative current is 72,000 ka·h/m2, and the life span is 11 months)
3. Titanium anode for copper recovery from etching solution: copper sulfate is decomposed into sulfuric acid and copper by electrolysis. The extraction electrolysis and adsorption electrolysis technologies are adopted to regenerate and recycle the etching solution, and 100% of the copper can be recovered. The obtained copper is high-purity electrolytic copper. While the pollution is controlled, the waste liquid is also recycled as a resource. Titanium anode can work stably in sulfate waste liquid (alkaline solution and acidic solution), is corrosion-resistant, reduces potential and slot position, is easy to operate, does not produce secondary pollution, and improves work efficiency. The maximum current density is 2000A, the maximum voltage is 10-16 volts, and the service life is more than 2 years.
4. Titanium anode for sodium hypochlorite generator: The sodium hypochlorite generator is a device that generates sodium hypochlorite solution by electrolyzing dilute salt water (conditional availability of seawater), and is composed of electrolytic electrode assembly, rectifier power supply, automatic control system and other parts, and is made of pure sodium hypochlorite. The solution is a strong oxidant with strong bactericidal and bleaching effects. In the process of electrolysis of the generator, the anode of the electrode is continuously ionized to produce positrons. The positrons encounter the sodium chloride electrolyte with good conductivity between the cathode and anode, and the negative chlorine (CL-) in the sodium chloride is continuously precipitated. , and form positive chlorine (CL+), that is, chlorine in hypochlorite (CLO-), CLO- combines with Na+ ions to form sodium hypochlorite molecules, and generates hydrogen (H2) at the same time, so far, an electrolysis process ends; electrolysis produces Almost all of the available chlorine in the sodium hypochlorite solution exists in the state of hypochlorite (CLO-) (that is, the available chlorine is an ionic state), and there is no large amount of chlorine molecules (CL2) in the process of chemical chlorine production (chlorine gas is dissolved in water, Chlorine water), so it will not cause chlorine loss due to the volatilization of chlorine gas, strong bactericidal ability, pure quality, and will not react with organic compounds in water to produce chloroform and other harmful substances, it is an ideal bactericide;
The process of electrolysis of salt into sodium hypochlorite is an electrochemical reaction process. The raw material is salt + water, and there are no other additional components. The quality of the liquid is pure. Although the chemical principle is simple, there are many technical indicators that affect the economy, so sodium hypochlorite occurs. The design of the titanium electrode and anode of the electrolytic device should integrate various factors, and design and manufacture according to the characteristics of compact and reasonable structure, economical operation index, convenient operation and maintenance, and long service life of the equipment.
At present, the titanium anode for sodium hypochlorite generator produced by our company has a suitable concentration of salt solution of 50-60g/L, a current density of 2000A/m2, and a reaction temperature of 30-50 degrees. Long working life, corrosion resistance, can improve the purity of chlorine, effectively improve production efficiency. The shape of the product is divided into tubular, plate, mesh, etc., which can be customized according to the actual needs of customers.
