In chemical production, titanium is used to replace stainless steel, nickel-based alloys and other rare metals as corrosion-resistant materials, which can increase output, improve product quality, extend equipment service life, reduce consumption, reduce energy consumption, reduce costs, avoid pollution, It is meaningful to improve working conditions and increase productivity. In recent years, the scope of titanium materials used in chemical industry has been continuously expanding, and the usage has increased year by year. Titanium materials have become one of the main anti-corrosion materials in chemical equipment. As a corrosion-resistant structural material used in chemical equipment, titanium has established its position, and as a material in chemical equipment, titanium has attracted more and more attention from engineering and technical personnel.
(1) Ammonia-alkali industry
The chlor-alkali industry is an important basic raw material industry, and its production and development have a great impact on the national economy. This is because titanium has better corrosion resistance to ammonia ions. At present, titanium is widely used in the chlor-alkali industry to manufacture metal anode electrolyzers, ion membrane electrolyzers, wet ammonia coolers, refined brine preheaters, etc. In the past, the main components of these equipment were mostly made of non-metallic materials. The mechanical properties, thermal stability and processing performance of non-metallic materials were insufficient, resulting in bulky equipment, high energy consumption, short lifespan, affecting product quality and polluting the environment.
(2) Soda ash industry Soda ash is one of the basic chemical raw materials, which is directly related to economic development. In the soda ash production process, the gas media are mostly NH3 and CO2, and the liquid media are mostly NaC1, NH4C1.NH4HCO3 and solutions with high C1-concentrations. Carbon drinks and cast iron materials are used for carbonation tower tubes and hot mother liquor coolers for carbonation reactions. , cooler, crystallization external cooler and other main equipment are not resistant to corrosion, corrosion and leakage are serious, and the service life must not exceed three years.
