Ruthenium Iridium Titanium Anode for Electrolytic Chlorine Production
Electrolytic chlorine production technology is a pollution control technology that effectively solves the environmental pollution caused by aquatic organisms. Through the use of this technology, it can well prevent aquatic organisms from multiplying and growing in pipes and cooling systems. Electrolytic chlorine production is not only an effective method. Pollution control technology, and its pollution control cost is also very economical. It is a pollution control technology widely used in power plants, chemical plants, nuclear power plants, receiving stations, offshore drilling platforms, etc. in the world.
my country is a water-poor country, and coastal cities and island areas have more severe water shortages. For coastal cities with relatively tight freshwater resources, it has become a consensus to use seawater instead of freshwater as circulating water for power plants or cooling circulating water for receiving stations, which can not only save a lot of freshwater resources, and can protect the environment and maintain ecological balance. Electrolytic chlorine production technology includes two kinds of electrolysis of seawater chlorine production and electrolytic salt water chlorine production. The electrolytic seawater chlorine production device produces sodium hypochlorite solution by electrolyzing seawater containing a certain concentration of chloride ions. Types and requirements of electrodes The core of electrolysis seawater technology is electrodes, and the quality of electrodes determines the electrolysis efficiency and the service life of the electrolysis device. Therefore, countries all over the world are competing to develop a variety of electrodes. The characteristics of electrodes are determined by the characteristics of seawater. Common cations in seawater are Na+, Mg2+, Ca2+, K+, H+; common anions are Cl-, SO2-, HCO3-, OH-. When these ions pass through the electrodes, electrolysis reactions may occur according to the laws of electrolysis. In order to eliminate side reactions, it is required from an electrochemical point of view that the anode should have a lower chlorine evolution potential and a higher oxygen evolution potential, and the cathode should have a lower hydrogen evolution potential and should prevent hydrogen embrittlement. In order to meet the above requirements, common anodes include titanium electrodes and ruthenium iridium titanium anodes. The service life of the anode is generally required to be guaranteed at least 3 to 5 a. There are two kinds of electrode plate arrangement, one is parallel plate type and the other is cylindrical type. The parallel plate design has a lower flow rate and requires regular cleaning; the cylindrical design has a higher flow rate and does not require regular cleaning. From the point of view of electrode operation economy, it is generally required that the temperature of seawater is not lower than 5 e, and the concentration of σ in seawater is not lower than 8000 tons/L. In order to ensure the service life of the electrode, it is required that the seawater contains less sand, does not contain heavy metal ions, and is not polluted by oil and organic matter.
