The main components of boiler feedwater deoxidizers usually include the following:
Sulfates (such as sodium sulfite): Sulfates are one of the commonly used components of deoxidizers. They can react with dissolved oxygen in water to form insoluble sulfate precipitates and remove oxygen from the water.
Reducing agent (such as sodium bisulfite): Reducing agent plays a role in reducing dissolved oxygen in boiler feedwater. They can react chemically with dissolved oxygen, converting it into water, thereby reducing the oxygen content in the feedwater.
Organic corrosion inhibitor: Organic corrosion inhibitor is another important component of boiler feedwater deoxidizer. They can form a protective film with the metal surface to prevent metal corrosion and scale formation.
Alkaline substances (such as sodium hydroxide): Alkaline substances are mainly used to adjust the pH value of water supply to a suitable alkaline range. Appropriate pH conditions contribute to the effectiveness of deoxidizers and provide protection against corrosion in boiler systems.
These components may vary depending on the specific deoxidizer formula and usage requirements. Choosing the appropriate composition of deoxidizers requires considering factors such as boiler design, operating conditions, water quality composition, and following relevant standards and specifications for use. When using deoxidizers, the ratio and dosage should be in accordance with the product instructions and operating guidelines to ensure the expected deoxygenation effect and water quality control.