Why are Carbohydrazide and Amines Used in Feed Water Treatment?

Carbohydrazide and amines are commonly used in feed water treatment for several important reasons. These compounds play a crucial role in maintaining the integrity and efficiency of boiler systems. Below, we explore the key functions of these additives and their significant impact on boiler operations.

Carbohydrazide: Effective Oxygen Scavengers

Carbohydrazide acts as a highly effective oxygen scavenger in feed water treatment. Its primary function is to remove dissolved oxygen from the water, which is essential for preventing corrosion in boiler systems. Oxygen is a potent cause of corrosion, leading to equipment damage and reduced system efficiency.

Corrosion Inhibition

By reducing the concentration of oxygen, carbohydrazide helps to mitigate corrosion rates in metal surfaces. This is particularly important in high-pressure steam systems where the threat of corrosion is heightened. Carbohydrazide maintains its effectiveness at high temperatures, making it suitable for use in boiling environments.

Thermal Stability

One of the key advantages of carbohydrazide is its thermal stability. Unlike some other oxygen scavengers, carbohydrazide does not volatilize easily, ensuring sustained effectiveness in the water system. This property is crucial for maintaining boiler efficiency and preventing oxygen-induced corrosion.

Amines: Versatile Corrosion Inhibitors and pH Controllers

In addition to oxygen scavengers, amines are another essential component in feed water treatment. Amines serve multiple functions, including pH control, neutralizing acidic components, and providing steam line protection.

pH Control

Amines are used to raise the pH of the feed water, which helps to reduce corrosion rates. A higher pH can decrease the solubility of certain corrosive species, further protecting the equipment from damage.

Neutralizing Amines

Compounds like morpholine and cyclohexylamine are often used as neutralizing amines. These amines react with acidic components in the water, neutralizing them and providing an additional layer of protection against corrosion. The use of neutralizing amines extends the lifespan of boiler systems and ensures their continued operation.

Steam Line Protection

Amines can also provide protection for steam lines by forming a protective film on metal surfaces. This protective film helps prevent corrosion during operation, ensuring the integrity of the steam generation system.

Volatility

Many amines are volatile and can carry over with steam, providing ongoing protection in the steam system. This is beneficial for maintaining the integrity of the entire system and ensuring sustained performance.

Combined Use for Enhanced Performance

Both carbohydrazide and amines are indispensable in feed water treatment. Their combined use helps ensure the integrity of the entire steam generation system. By controlling oxygen levels, preventing corrosion, and maintaining proper pH levels, these additives contribute significantly to the efficiency and longevity of boiler systems.

In summary, carbohydrazide and amines play crucial roles in feed water treatment. They are essential for minimizing internal corrosion, maintaining pH levels, and ensuring the efficient operation of boiler systems. The use of these compounds is vital for the operational efficiency and longevity of any industrial steam generation facility.