Heat exchanger (also known as heat exchanger or heat exchange equipment) is a device used to transfer heat from hot fluid to cold fluid to meet the specified process requirements. It is an industrial application of convective heat transfer and heat conduction.
Heat transfer can be a difficult task in the treatment of corrosive media such as acids, chlorinated compounds and vaporized fluids. Corrosion can cause loss of mechanical integrity and scaling. Scaling is the result of depositing unwanted material on the surface. This can change the heat transfer coefficient of the surface and affect the performance of the heat exchanger.
Corrosion of valves and equipment is a common problem in chemical, oil refining, oil and gas related processing industries.
According to the general statistics of national defense, more than 5% of the military equipment and materials scrapped by the US military due to metal corrosion each year account for more than 5% of the total equipment, and the metal corrosion will cause a huge increase in the maintenance and protection costs of weapons and equipment. According to the U.S. Department of defense, the U.S. Navy causes about 7 billion dollars of huge losses every year due to corrosion problems, of which 500 million dollars are used to repair rusty Marine Corps ground vehicles.
Severity of corrosion
Academicians Hou Baorong, Wang Jingquan and other academicians of major consulting projects of Chinese Academy of Engineering investigated "our corrosion situation and control strategy research" on industrial corrosion, and the results showed that in 2014, the loss caused by corrosion in China reached 2.1 trillion yuan, accounting for 3.34% of GDP in that year.
According to a U.S. survey, corrosion can cause as much as 6% of U.S. GDP. At the same rate, the total annual corrosion loss in the world is more than 4 trillion US dollars.
Advantages of tantalum plating technology
tantalum is recognized as the most corrosion-resistant metal
Low temperature chemical vapor deposition (CVD)
Prepared surface alloy
Physical properties of tantalum
It can effectively improve the mechanical properties of the matrix
Excellent deformation and bending ability
Unparalleled corrosion, high temperature and high pressure resistance
It's the best choice in bad conditions
Advantages of tantalum plating heat exchanger
Performance of tantalum plating products in different environments
Nickel base alloy, zirconium and titanium thermowells are susceptible to stress corrosion cracking (SCC) and pitting, especially in hot acids. The performance of tantalum in hot acid is excellent.
Performance in corrosive media
It has chemical resistance to SCC and pitting in many corrosive media and environments.
In high temperature and acid conditions
The tantalum layer remained passivated and inert to corrosion under high temperature (> 200 ° C) and acid conditions (including concentrated HCl and H2SO4).
In chlorine environment
Excellent corrosion resistance to humid, dry chlorine atmosphere and other chlorinated environments.
Application environment of tantalum plating heat exchanger
Pickling chlorination solvent, strong acid such as HCl, H2SO4, HNO3, hot corrosive waste liquid
Heating flue gas (CO2, H2S, SO2), ammonia treatment
Volatile oxidizing compounds such as dichloromethane and methanol
Preparation of strong HCl etchant and processing of silicon deposition by-products
Thermal volatile chloride, corrosive salt, sulfurization, methanation
Typical use of tantalum plating heat exchanger
Acid heat exchanger, reboiler, evaporator
Processing equipment, condenser, regeneration heat transfer
Digester heating, waste water cooling, waste heat recovery
Process fluid heating and cooling
Contact: Alex Li
Phone: 86-18690401137 QQ 2244385626
Add: Middle of Baotai Road,High-tech Zone, Baoji City,Shaanxi Province,China.