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Tantalum, the king of corrosion resistance

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.

Material corrosion

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

Erosion

It has chemical resistance to SCC and pitting in many corrosive media and environments.

In high temperature and acid conditions


Acid

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

Chlorine

Excellent corrosion resistance to humid, dry chlorine atmosphere and other chlorinated environments.

Application environment of tantalum plating heat exchanger

Chemical processing

Pickling chlorination solvent, strong acid such as HCl, H2SO4, HNO3, hot corrosive waste liquid


Petroleum

Natural gas

Heating flue gas (CO2, H2S, SO2), ammonia treatment

Make medicine

Volatile oxidizing compounds such as dichloromethane and methanol


Semiconducting body


Preparation of strong HCl etchant and processing of silicon deposition by-products


General industry


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

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Contact: Alex Li

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Tel: 86-0917-3658839

Email: info@xbymetal.com

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