The deoxidant has a long development history.With the continuous advancement of technology, it has evolved from initial thermal deaeration devices to the industry's ongoing development of new types that are environmentally friendly, low-toxic, and highly efficient, constantly optimizing the deaeration methods.
Table：The historical development process of deoxidant
Period | Desorption Method | Application Situation | Shortcomings |
The 1930S | Thermal deaeration device | The dissolved oxygen level dropped to 5-7 μg/L, which accounted for approximately 80% of the total dissolved oxygen. This does not meet the requirements. | The trace dissolved oxygen needs to be removed using chemical oxygen remover; both the technology and application are limited. |
The 1940S | Sodium sulfite | As a good deoxidant for low-pressure boilers, it has been widely used. It has also been applied in the food industry. | High dosage; leads to an increase in the salt content of the boiler water; decomposes corrosive substances; has no passivation effect on the metal surface. |
The 1960S | Hydrazine | Can effectively remove dissolved oxygen from water. | High toxicity; affects the deoxygenation effect at low temperatures. |
The 1970S | New type of deoxidant | A large amount of effort has been devoted to research in foreign countries, and new types of deoxidant have been continuously developed. The application fields have expanded from food to various other fields such as medicine. | -- |
The 21st century | New type of deoxidant | The performance of deoxidant has been continuously improved, and their application fields have also been continuously expanded. They have also been applied in industries such as chemical engineering, cosmetics, and textiles. | -- |
Since the 21st century, the technology of oxygen scavengers has made significant progress, and new products have been continuously launched. Currently, for instance, new oxygen scavengers such as dimethylketoxime, diethylhydroxylamine, isocitric acid, carbonylhydrazine, nitrogen tetrasubstituted amines, and N-isopropylhydroxylamine, due to their high safety and wide application range, are continuously gaining market recognition.
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