Titanium anode tube is an insoluble electrode with a titanium tube as its substrate and a noble metal oxide coating (such as ruthenium-iridium, iridium-tantalum, etc.) on its surface. Due to its strong corrosion resistance, high electrocatalytic activity, and long lifespan, it is widely used in various fields such as chlor-alkali industry, hydrogen production by water electrolysis, wastewater treatment, cathodic protection, and more. Compared to traditional graphite or lead anodes, titanium anode tube has significant advantages such as dimensional stability, low energy consumption, high current density, and low maintenance cost.

       1. Core Features and Advantages

Strong corrosion resistance

       Titanium substrates possess natural corrosion resistance in harsh environments such as acidic, alkaline, and high-salt conditions. Coupled with noble metal oxide coatings, they can operate stably over a long period of time within a pH range of 1–14, with a service life of up to 5–15 years.

Energy-saving and efficient

       With low operating voltage, stable cell voltage, and a reduction in DC power consumption by 10%–30%, the energy-saving effect is particularly prominent in chlor-alkali production.

Strong structural adaptability

       The tubular design facilitates installation in cylindrical reactors or confined spaces, and the hollow structure supports cooling water circulation or electrolyte flow, enhancing heat dissipation and mass transfer efficiency.

Environmental protection and safety

       The coating is stable and releases almost no harmful substances, thus avoiding pollution to the electrolyte and products, meeting the green production requirements of modern industry.

       II. Main application scenarios

Chlor-alkali industry: Used for electrolyzing salt water to produce chlorine, caustic soda, and hydrogen, enhancing product purity, and reducing energy consumption by approximately 15%–20%.

Electrolysis of water to produce hydrogen/oxygen: As an oxygen-evolving anode, it is used in conjunction with a nickel mesh cathode. The tubular structure facilitates the rapid escape of gas, reducing voltage fluctuations caused by bubble accumulation.

Wastewater treatment: Through electrochemical oxidation, organic pollutants (such as printing and dyeing wastewater, phenol-containing wastewater) are degraded. Tubular electrodes enhance the contact efficiency between the water and the electrodes, thereby improving treatment efficiency.

Cathodic protection system: used for corrosion protection of metal structures such as pipelines, storage tanks, and bridges in soil, fresh water, and seawater, replacing high-silicon cast iron anodes, with longer lifespan and higher cost-effectiveness.

Electroplating and metal refining: Used for electrolytic purification of metals such as copper, zinc, and nickel, to avoid anodic dissolution that contaminates the plating solution and enhance the uniformity of the plating layer.