Wide Application of Titanium in PTA Industry
PTA is the organic chemical with the largest production and consumption in china. The PTA industry is an important link between petrochemical industry and chemical fiber textile, which play an extremely important role in the national economy. China is the main production center of PTA in the world. The global production of PTA is concentrated in Asia, North and South America and Europe. Among them, Asia has the largest production capacity, accounting for 86.78% of the global PTA production capacity.
1. Application of titanium in PTA device
The passivation ability of titanium in oxidizing media is particularly strong, and the passivation strength of titanium is higher than that of the reduction effect of Cl. When the film is damaged, it can be repaired quickly and automatically to maintain the pure state. Therefore, titanium and titanium alloys are the preferred anti-corrosion materials for PTA devices, which can resist corrosion in various corrosive environments of PTA devices. The parts that need anti-corrosion in the PTA device are mainly reactors and exchangers, and the anti-corrosion methods are titanium-lined or all-titanium. Titanium-lined parts are made of outer carbon steel to bear the pressure of the medium, while the inner lining resists the corrosion of the medium. All-titanium components are completely borne by titanium to bear the corrosion and pressure of the medium.2. Application prospects in the field of titanium and chemical fibers
Titanium alloys and chemical fibers can be made into composite materials through winding, molding or pultrusion and other forming processes, which have been widely used in aviation, aerospace, energy, chemical, marine engineering, biomedicine, weapons, industry and other fields. For example, there have been mature applications in typical products such as aircraft, high-pressure gas cylinders, masts, and propellers.3. Application of titanium and chemical fiber in aerospace field
Fiber-wound composite high-pressure gas cylinders have the advantages of light weight, high structural efficiency, good safety and reliability, and can reduce weight by 30%-50% compared with metal gas cylinders of the same specification and pressure level. With the rapid development of aerospace technology, the requirements for the pressure level and container characteristic coefficient of gas cylinders are getting higher and higher. It is one of the development trends to use composite materials instead of pure metal materials to make ultra-high pressure gas cylinders.4. Application of titanium and chemical fibers in marine engineering
The application of fiber composite materials in the shipbuilding industry has attracted much attention due to its excellent corrosion resistance and environmental advantages such as weight reduction and consumption reduction, and has become an important class of marine materials. In the early days, due to the limitation of material preparation level and processing technology, fiber composite materials were only used in mine sweepers and ships. Today, they have been used in large and medium-sized ships and warships, mainly in ship hulls, masts, ship walls, decks, equipment bases, piping systems, thrusters and propulsion shafting, etc.5. Application of titanium in shape memory textiles
The most widely used shape memory alloys in textiles are nickel-titanium alloys, which have high deformation recovery rate, good stability and good biocompatibility. It is suitable for fabrics that need to be shaped such as petticoats and brackets for wedding dresses. Using fibrous materials and shape memory materials can produce fabrics that are more comfortable and functional than traditional materials, such as medical textiles and personal protective equipment.