The necessity and core role of adding deoxidizer to boiler feedwater

Boiler is a key thermal equipment in industrial production and heating systems, and water quality control is an important link to ensure the stable operation of boilers and extend the service life of equipment. Natural water sources and conventional tap water will dissolve a large amount of gases such as oxygen and carbon dioxide. If they directly enter the boiler system, it will cause a series of equipment hazards. Therefore, reasonable addition of boiler deaerator to boiler feedwater can solve various problems caused by dissolved gas from the source.

Dissolved oxygen in water is the main cause of corrosion of boiler equipment. Long term contact between oxygen and metal components such as boiler pipes, drums, and water-cooled walls can lead to continuous oxidation reactions, causing corrosion, pitting, and thinning of the metal inner walls. If deoxygenation treatment is not carried out for a long time, a large amount of rust and corrosion products will be generated on the inner wall of the pipeline, which not only reduces the structural strength of the equipment, but also shortens the overall service life of the boiler and increases maintenance and replacement costs.

Boiler deoxygenation agentThe core function is to remove dissolved oxygen from the water supply and block oxidative corrosion reactions. Chemicals can undergo chemical reactions with dissolved oxygen in water, steadily consuming free oxygen, inhibiting electrochemical corrosion, and providing multi-faceted protection for the entire set of thermal equipment such as boiler bodies, water supply pipelines, and heat exchangers. At the same time, high-quality deoxidizers can assist in neutralizing acidic gases in water, weaken the erosion of metals by acidic substances, and optimize the water circulation environment.

In addition, untreated dissolved oxygen can also enter the water circulation system with the water flow, which can easily cause local bubble accumulation and lead to cavitation. Cavitation can damage the surface structure of the metal inner wall, forming pits and cracks. Long term operation is prone to equipment leakage, decreased pressure bearing capacity, and other problems, affecting the safety of boiler operation. The use of deoxidizers to stably remove dissolved gases can effectively avoid the risk of cavitation and ensure the smooth operation of the system.

Under the operating conditions of high-temperature and high-pressure boilers, the corrosion rate of dissolved oxygen will significantly accelerate. Especially for industrial boilers and heating boilers that operate continuously, long-term high load operations will continue to exacerbate the losses caused by water quality defects. By regularly adding deoxidizers, the stability of the feedwater quality can be maintained, reducing the entry of corrosive impurities into the furnace, avoiding secondary problems such as pipeline blockage and scaling of the heating surface, improving the heat transfer efficiency of the boiler, and reducing energy consumption.

reasonable useBoiler deoxygenation agentIt can also reduce the frequency of pollution discharge, save water resources and fuel consumption, and meet the production needs of energy conservation and consumption reduction. When used in conjunction with conventional water treatment processes, a complete water quality protection system can be constructed to adapt to water standards for boilers of different pressures and tonnages, meeting the safety operation standards of thermal equipment.

In summary, dissolved oxygen is an important water quality hazard that threatens the safe operation of boilers. Adding deoxidizer to boiler feedwater can remove dissolved oxygen, inhibit metal corrosion, prevent cavitation and scaling, stabilize boiler operating conditions, reduce equipment failure probability and maintenance costs. It is an indispensable key link in the boiler water treatment process and the basic guarantee for the long-term safe operation of industrial boilers.