Wednesday, September 10, 2014

The advantages of titanium anode

1, titanium anode TitaniumCN working life is long, the diaphragm method in the production of chlor-alkali industry, metal anode resistance to chlorine and alkali corrosion, anode has six years of life, and the graphite anode is only 8 months.
2, can overcome the graphite anode and lead anodic dissolution, avoid the pollution to the electrolyte and cathode, and thus can improve the purity of metal products.
3, can improve the current density.Diaphragm method in chlor-alkali production, work of graphite anode current density is 8 a/dm2, titanium anode can multiply, up to 17 a/dm2, so in the electrolysis workshop, under the same conditions, yield can increase 1 times, improve the ability of single tank production, effectively improve the labor productivity.In electrolysis under high working current density, the use of titanium anode is good.
4, with metal anode, chlorate cell operation of high temperature, high current density is possible.Metal anode used to improve cell structure, reduces the power consumption, accelerate the hypochlorite angry chlorate in the chemical reaction, so as to improve the production performance.
5, adopt DSA, mercury method and membrane method the design concept of salt electrolytic cell and operating conditions to improve, to reduce energy consumption.DSA low overpotential properties, electrode and electrode surface bubbles easily between, is the important reason for the metal anode electrolyzer cell voltage is lower.
Because the titanium anode has many advantages, it development of chlor-alkali industry made great economic benefits, so soon used widely all over the world.Chlor-alkali production capacity, the world is about 41 million tons/year, adopts the titanium anode is not less than 70%, titanium anode was regarded as a major technological revolution in the chlor-alkali industry.After that, the titanium anode in a lot of electrolytic industry also has been widely applied.
6, anode size stability, CLP interelectrode distance does not change, electrolytic process ensures electrolytic operating under the condition of cell voltage stability.
7, can avoid lead anode after deformation problem of short circuit and current efficiency can be improved.
8, titanium anode light weight, can reduce labor intensity.
9, switch to make easy, but high precision.
10, low work voltage, so the power consumption is small, can save power consumption, dc power consumption can be reduced by 10% ~ 20%.The main reason for the low titanium anode working voltage: 1) active coating titanium anode overpotential of chlorine and oxygen are relatively low.Electrolytic brine in chlor-alkali production, titanium anode for low chlorine overpotential, in 1 a/cm2 is lower than graphite anode 140 mv;2) can decrease the shielding effect "bubbles", metal anode surface generated by the bubble is small, and out quickly, so greatly reduced degree of aeration between electrodes, ohmic drop between the poles of about 700 mv, air bubble diameter is about 3 mm;3) to reduce the resistance of the anode structure;4) shortens the interelectrode distance.[1]
In the 1960 s, the world salt electrolysis industry consume about 150 billion degrees, use metal anode, each year about 300 million degrees can save electric energy.
After 11, in chlor-alkali production, the use of titanium anode, products with high quality and high purity chlorine, including CO2, alkali concentration is high, can save heating steam, saves the energy.
12, corrosion resistance is strong, can be in many highly corrosive, electrolytic medium with special requirement.
13, titanium substrate metal can be used repeatedly.
14, the presence of the metal anode, the use of chlor-alkali industry in the recent emergence of ionic membrane electrolysis with the latest technology to design and realize industrialization.

No comments:

Post a Comment