{"id":1746,"date":"2022-11-02T09:24:15","date_gmt":"2022-11-02T09:24:15","guid":{"rendered":"https:\/\/energy-ti.com\/?p=1746"},"modified":"2022-11-03T03:34:32","modified_gmt":"2022-11-03T03:34:32","slug":"why-titanium-alloy-can-be-used-for-chlorine-alkali-industry","status":"publish","type":"post","link":"https:\/\/energy-ti.com\/pl\/why-titanium-alloy-can-be-used-for-chlorine-alkali-industry\/","title":{"rendered":"Dlaczego stop tytanu mo\u017ce by\u0107 stosowany w przemy\u015ble chloro-alkalicznym?"},"content":{"rendered":"

Chlor-alkali industry is a chemical industry that produces chlorine gas and caustic soda by means of electrolytic salt aqueous solution. It has a history of more than 100 years and is also the earliest application of titanium in chemical industry. In chlor-alkali production, titanium equipment mainly includes metal anode electrolyzers, ion exchange membrane electrolyzers, tubular wet chlorine cooler, refined brine preheater, dechlorination towers, chlor-alkali cooling and washing tower, vacuum dechlorination pump and valve and other titanium equipment. It replaced graphite as the primary material in chlorine cooling scrubbers in the 1970s. Nowadays, titanium has been a widely used anti-corrosion material in the chlor-alkali industry, its superior corrosion resistance makes it ideal for making metal anodes and other processing equipment. Why? Why titanium is popular in this field? Let’s start with its character.<\/p>\n

The characteristics of Titanium<\/strong>
\nCorrosion resistance is an important feature of the chlorine alkali industry. The process medium and corrosive substances such as sulfuric acid, chlorine gas, hydrochloric acid and caustic soda used in chlor-alkali industry will bring adverse effects to pipelines and devices. Therefore, the equipment and materials of chlor-alkali production put forward higher requirements for corrosion resistance. Titanium alloy has excellent corrosion resistance, high strength, lightweight and good stability so it is favored in chlor-alkali industry production.<\/p>\n

Titanium is often used in extremely corrosive environments, and this makes it better suited than other metals for such applications, especially when they develop a passive oxide film on the surface. This film is composed of crystalline materials, which have high integrity and adherence. When a titanium alloy is damaged, the passive film heals itself. In addition, anodising is an effective process to enhance the protective film on titanium. It exhibits excellent corrosion resistance in seawater and hydrocarbons. In addition, titanium exhibits a strong passivation tendency, which means that it can form a stable oxidizing film in air or aqueous solution. Hence, the use of titanium alloys for chlorination processes can greatly benefit the industry. Titanium alloys also have excellent ductility, formability, strength, and weldability. Titanium has lower thermal conductivity than carbon steel and copper, so its walls can be thinner. Titanium’s good corrosion resistance also means that the surface is not susceptible to scaling, reducing thermal resistance. Moreover, titanium alloy is capable of being used at temperatures up to 600\u00b0C for a long time.<\/p>\n

Under oxidizing conditions containing chloride, titanium exhibits corrosion resistance comparable to tantalum and superior to stainless steel and nickel-based alloys. The corrosion of 100% pure titanium is poor under the condition of reducing acid, while the titanium alloy containing palladium not only enhances the corrosion resistance of titanium under the condition of reducing medium, but also maintains its corrosion resistance under the condition of oxidation. It forms a passive oxide film on its surface, which improves its resistance to corrosion.<\/p>\n

\"\"<\/p>\n

Applications of titanium in Chlorine Alkali Industry<\/strong><\/p>\n