The global chemical industry is upgrading towards large-scale, green, and long-term development. Chlor alkali PTA, In the fields of wet metallurgy, fine chemical engineering, and other industries, there are generally strong corrosive conditions such as strong acids, strong alkalis, and high chloride ions. Traditional carbon steel and stainless steel equipment have short service lives, high maintenance costs, and high safety risks. Titanium tubes have become the key preferred material for major chemical engineering projects due to their four core characteristics of ultimate corrosion resistance, high strength, lightweight, and long service life. BThe chemical consumption of titanium pipe in the Tianjin market was 15,000 tons in 2014, accounting for 30% of the total consumption of titanium materials; It is optimistic estimate that the world chemical titanium pipe will grow by 6.2% per year from 2026 to 2030, and the single batch titanium pipe purchase volume of large project will be more than 1000 tons.
For the application of American standard GR1/GR2 pure titanium, GR7 (Ti-0.2Pd), and GR12 (Ti-0.3Mo-0.8Ni) in large chemical engineering projects, and can be run to extreme working environment, the tubes meet with ASTM B338 (heat exchanger tubes) and ASTM B861 (seamless tubes) specifications.
1, Chlor alkali engineering: the "longevity choice" for high-temperature and strong alkali working conditions
A world-class chlor alkali integrated project (with an annual output of 1.2 million tons of caustic soda) uses GR2 titanium welded pipes (Φ 25 × 1.2mm, length 6m) as the cooling system for the electrolysis process, which can withstand corrosion from strong alkaline solutions of 90 ℃ and 30% NaOH. The original 316L stainless steel tube has a lifespan of only 2-3 years, while the titanium tube has been running continuously for 12 years without leakage, reducing maintenance costs by 85% and reducing unplanned production losses by over 20 million yuan per year; The project simultaneously uses GR7 titanium tubes to treat chloride containing saline water, which improves the pitting corrosion resistance by 40%.
2, PTA Engineering: The "Efficient Heat Exchange Core" of High Temperature Acetic Acid Medium
The oxidation unit heat exchanger of the large-scale PTA plant (with an annual output of 2.5 million tons) uses GR2 titanium seamless tubes (Φ 19 × 1.0mm, U-shaped tube bundle), which can withstand strong corrosive media of 220 ℃ and 95% acetic acid+bromide. Compared to stainless steel, titanium tubes have a 12% increase in heat transfer efficiency and a 15% decrease in energy consumption; The equipment has been running continuously for 8 years without scaling or corrosion, and the product purity is stable at 99.9%, avoiding the risk of iron ion pollution.
3, Wet metallurgical engineering: a "stable barrier" for high acid and chlorine containing environments
A large-scale wet copper smelting project in Africa (with an annual output of 300000 tons of cathode copper) uses GR12 titanium tubes (Φ 50 × 2.0mm, seamless) for leachate heat exchange and transportation system, which can withstand acidic solutions containing Cu ² ⁺/Fe ³ ⁺/Cl ⁻ at 80 ℃ and pH=1.5. Titanium pipes have excellent resistance to stress corrosion cracking (SCC), completely solving the problem of perforation and leakage of stainless steel pipes within 3 months. The equipment life is extended to 15 years, and the copper recovery rate is increased by 1.2%.
4, Soda ash engineering: an energy-saving upgrade plan for high salt media
A steam ammonia tower heat exchanger in a soda ash plant in the United States replaced cast iron pipes with GR2 titanium pipes (Φ 38 × 1.5mm) to treat sodium chloride/ammonium chloride mixed media. The titanium tube has remained intact for 5 years, with a 25% increase in heat transfer capacity and a 40% reduction in equipment weight, significantly reducing base load and energy consumption.
Core parameters and manufacturer advantages
Core parameters of chemical titanium tubes (American standard):
GR1/GR2: Pure titanium, resistant to neutral/weak corrosion, tensile strength ≥ 240MPa, applicable temperature ≤ 200 ℃.
GR7: Contains palladium titanium, resistant to reducing acids, tensile strength ≥ 240MPa, suitable temperature ≤ 250 ℃.
GR12: Mo-Ni-Ti, high resistance to chlorine/hydrogen sulfide, tensile strength ≥ 345MPa, service temperature ≤ 300℃.
Specification: Seamless pipe:Φ 3-114mm, welded pipe: Φ10-56mm, thickness: 0.5-10mm, length: 3-12m.
With the precision of ± 0.01mm in dimensions and the high quality space 17-7PH/17-4PH American standard titanium pipe, we are the professional titanium pipe manufacturer,strict following ASTM standards in mechanical and corrosion resistance performance for GR1/GR2/GR7/GR12. Customizable non-standard pipe diameter, wall thickness, and length, suitable for special structures such as U-shaped and coiled pipes; Provide one-stop services for material selection, working condition adaptation, sample development, and batch delivery, supporting third-party testing (EN 10204 3.1/3.2), and helping major chemical engineering projects achieve the core goals of long cycle, low maintenance, and high safety.
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Email：bjcxtitanium@gmail.com
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