The main purpose of adding deoxidizer to boiler water is to prevent corrosion and scaling problems in the boiler system. The following are several key roles of deoxidizers in furnace water treatment:
Preventing corrosion: Dissolved oxygen in water is one of the main factors causing corrosion of boilers and their pipelines. Oxygen can react with metal surfaces to form metal oxides, known as corrosion. By adding deoxidizers to the furnace water, dissolved oxygen can be effectively removed from the water, thereby reducing corrosion.
Reduce scaling: Oxygen dissolved in water can also promote the scaling process inside the boiler. Scaling can lead to a decrease in heat transfer efficiency, increase energy consumption, and may cause boiler overheating or even damage. Deoxidizers help reduce the occurrence of scaling.
Improving thermal efficiency: By preventing corrosion and scaling, the thermal efficiency of the boiler can be improved, as thermal energy can be more effectively transferred, reducing the additional thermal resistance caused by scaling.
Extending equipment life: Reducing corrosion and scaling can extend the service life of boilers and related equipment (such as heat exchangers, pipelines, etc.).
Ensure safe operation: Corrosion and scaling of the boiler may cause safety issues such as leaks or explosions. The use of deoxidizers helps ensure the safe operation of the boiler system.
Reduce maintenance costs: By reducing corrosion and scaling, the maintenance and repair costs of boiler systems can be reduced.
Common deoxidizers include hydrazine, methylketoxime (MEKO), amino carbamate, and some organic phosphate esters. These compounds can react with dissolved oxygen in water to remove them from the furnace water.
In practical applications, the use of deoxidizers needs to be determined based on the type of boiler, the chemical characteristics of the boiler water, and operating conditions to ensure the best deoxygenation effect is achieved.
