Definition and Core Features
Titanium heat exchange equipment is a heat transfer device made of titanium or titanium alloy as the core material, which achieves heat exchange between cold and hot media through structures such as spiral winding and tube arrangement. Its core features include:
1. Corrosion resistance: The surface dense oxide film can resist strong corrosive media such as seawater, hydrochloric acid, and concentrated nitric acid, and its service life is 3-5 times that of traditional stainless steel equipment;
2. Lightweight and High Strength: With a density of only 60% of steel and a tensile strength of ≥ 600 MPa, it is suitable for scenarios requiring lightweight equipment;
3. Wide temperature range adaptation: The working temperature covers from -200 ℃ to 400 ℃, and the structural stability is maintained at high temperatures.
Main types
Spiral wound heat exchanger, shell and tube heat exchanger, plate heat exchanger.
Application Fields
1. Chemical industry field
Used in strong corrosive environments such as hydrochloric acid cooling and sulfuric acid concentration in the chlor alkali industry;
The reaction kettle is equipped with a heat exchange system, which has an acid and alkali corrosion resistance life of over 10 years.
2. Ocean Engineering
The core heat exchange module of seawater desalination equipment has excellent resistance to salt spray corrosion;
Deep sea platform cooling system, capable of withstanding high pressure and low temperature.
3. Energy and Environmental Protection
The secondary heat exchanger of a nuclear power plant has outstanding radiation protection performance;
Waste gas and heat recovery system, with a thermal efficiency of ≥ 85%.
Manufacturing and Maintenance Standards
1. Processing technology
Using cold-rolled titanium tube combined with CNC winding technology, the accuracy error is ≤ 0.1 mm;
The welding process uses argon arc welding+TIG technology, and the qualification rate of weld seam inspection is ≥ 99.5%.
2. Installation and debugging
Sealing test standard: Tube side nitrogen pressure leakage rate<0.01 mL/min;
Hot commissioning requires staged insulation at a heating rate of 30 ℃/h, with monitoring of thermal expansion ≤ 20 mm.
3. Operation and maintenance requirements
Cleaning cycle: Chemical medium is pickled every 6 months;
Vibration monitoring: Set a three-level warning threshold.
Summary: Titanium heat exchange equipment, with its comprehensive performance advantages, has become the preferred solution for extreme corrosion, high pressure and high temperature scenarios, but it needs to be matched with design parameters based on working conditions to optimize economy.
