Analysis of the core advantages of boiler deoxygenation agents compared to traditional thermal deoxygenation

During the operation of industrial boilers, deoxygenation of feedwater is a crucial step in ensuring equipment safety and extending service life. Oxygen is the main corrosive substance in the boiler feedwater system. If it cannot be effectively removed, it will corrode the boiler tube wall and heating surface, form iron scale with poor heat transfer, and even cause pipeline explosion accidents in severe cases. The country has clearly stipulated that steam boilers with evaporation capacity greater than or equal to 2 tons per hour and hot water boilers with water temperature greater than or equal to 95 ℃ should undergo deoxygenation treatment. For a long time, traditional thermal deoxygenation has become the mainstream of the industry with mature technology, but with the increasing demand for energy conservation and environmental protection in industrial production,Boiler deoxygenation agentWith its unique advantages, it has gradually become an ideal alternative to thermal deoxygenation, widely used in multiple industries such as power, steel, and biopharmaceuticals.

The core principle of traditional thermal deoxygenation is to heat boiler feedwater to boiling point, utilizing the physical law that gas solubility decreases with increasing temperature to allow oxygen in the water to escape and be discharged with steam. Although it can achieve a certain deoxygenation effect, there are many shortcomings due to factors such as equipment, operating conditions, and energy consumption. Boiler deoxygenation agents quickly remove dissolved oxygen from water through chemical reactions, without the need for complex physical heating processes. They exhibit significant advantages in deoxygenation efficiency, energy saving and consumption reduction, and applicability. The specific analysis is as follows:

Advantage 1: Higher deoxygenation efficiency and more stable compliance with standards

Traditional thermal deoxygenation is affected by various factors such as heating temperature, pressure control, and exhaust valve adjustment, and is prone to fluctuations in deoxygenation efficiency during low load operation, which cannot remove residual oxygen in the water and poses a corrosion hazard to boiler equipment. High quality boiler oxygen scavengers can quickly react with dissolved oxygen in water, stabilizing the dissolved oxygen content in water below 0.01mg/L. Some high-quality oxygen scavengers, such as hydrazine carbonate, can even control the dissolved oxygen content below 0.005mg/L, far below the national industrial water standard requirement of 0.05mg/L. The deoxygenation effect is more accurate and stable, eliminating the risk of oxygen corrosion from the root.

At the same time, the deoxygenation effect of the boiler deoxygenation agent is not affected by boiler load or water temperature fluctuations, and can play a stable role in both high temperature and high pressure conditions and normal temperature and low pressure environments. For example, hydrazine carbonate can remove oxygen within a wide temperature range of 20-300 ℃, while traditional thermal deoxygenation significantly reduces its deoxygenation effect when the water temperature is below 104 ℃, which cannot meet the deoxygenation requirements for low-temperature conditions.

Advantage 2: Significant energy conservation and consumption reduction, significant reduction in operating costs

Traditional thermal deoxygenation requires a large amount of steam to heat the feedwater to boiling point, resulting in high energy consumption costs. Especially for large industrial boilers, the steam consumption in the thermal deoxygenation process alone accounts for a certain proportion of the total energy consumption of the boiler, and steam waste occurs during the exhaust process, further increasing operating costs. In addition, the daily maintenance and pipeline insulation of thermal deoxygenation equipment also require a large amount of manpower and material resources. The equipment maintenance cycle is relatively short, usually requiring maintenance every 8 months, resulting in high maintenance costs.

Boiler deoxygenation agent does not require heating or complex deoxygenation equipment. It can be effectively deoxygenated by adding it in proportion, which can significantly reduce steam consumption and power loss, meeting the energy-saving needs of green industry. According to data from equipment monitoring agencies, boilers using boiler oxygen scavengers can save maintenance costs of over 200000 yuan per year. The equipment maintenance cycle has been extended from 8 months to 24 months, while also reducing equipment failures caused by corrosion and minimizing production losses. In the application practice of biological product enterprises, the use of low-temperature effective deoxygenation agents combined with relevant treatment schemes can reduce energy waste by 8% -10%, lower water resource consumption, and further enhance the economic benefits of enterprises.

Advantage 3: Wide applicability and adaptability to various working conditions

Traditional thermal deoxygenation has strict requirements for equipment and operating conditions, requiring the construction of specialized thermal deoxygenators. It occupies a large area, requires high infrastructure investment, and is difficult to adapt to small boilers, hot water boilers, and production scenarios with large load fluctuations. Its adaptability to low-temperature and low-pressure operating conditions is poor, and it cannot meet the deoxygenation needs of various industrial boilers. For example, small boiler rooms are difficult to build a complete thermal deoxygenation system due to limited space and insufficient steam supply; The water temperature of the hot water boiler is below the boiling point, and thermal deoxygenation cannot play an effective role.

Boiler deoxygenation agentThe adaptability is strong, and there is no need to modify existing equipment. Whether it is steam boilers, hot water boilers, small boilers, or high-pressure boilers, they can be flexibly used, especially suitable for small boiler rooms with limited space, insufficient steam supply, and production scenarios with large load fluctuations. At the same time, for systems that have already adopted thermal deoxygenation, boiler deoxygenation agents can be used as auxiliary deoxygenation methods to remove trace amounts of oxygen remaining after thermal deoxygenation, further improving deoxygenation efficiency and meeting the stringent deoxygenation requirements of large units. At present, boiler deoxygenation technology has been promoted and applied in more than 50 industrial enterprises across the country, covering key equipment such as boilers, heat exchangers, and pipelines, and adapting to deoxygenation needs in various industrial scenarios.

Advantage 4: Environmentally friendly and residue free, in line with green development

In the traditional thermal deoxygenation process, the exhaust steam carries some harmful gases, and scale accumulation may occur during equipment operation. Subsequent cleaning of scale will generate a large amount of wastewater, causing certain pollution to the environment; Some traditional chemical oxygen scavengers, such as sodium sulfite, can increase the salt content in boiler water, leading to increased discharge and waste of heat. Excessive use can also cause sodium scale to clog pipelines, posing a risk of secondary pollution. New types of boiler oxygen scavengers, such as hydrazine carbonate and dimethyl ketoxime, produce harmless nitrogen, carbon dioxide, and water as reaction products, with no toxic or harmful residues. They do not increase the salt content of boiler water and do not produce scale to block pipelines, avoiding secondary pollution from the source and in line with the national green industry development concept.

In addition, the use of boiler deoxygenation agent is safe, easy to operate, and does not require professional operators. It can be accurately added through automatic dosing equipment, avoiding the problem of excessive or insufficient dosage caused by manual dosing. This not only reduces the difficulty of operation, but also reduces the waste of reagents, further improving the environmental and economic aspects of the deoxygenation process.

Advantage 5: Low equipment requirements, more convenient operation and maintenance

Traditional thermal deoxygenation requires the construction of a series of complex equipment such as deaerator, heating device, water distribution device, exhaust valve, etc. The equipment investment is high, the land occupation is large, and the daily operation and maintenance are difficult. Regular inspection of the heating device and adjustment of the exhaust valve are required, and the maintenance cost is high. Once the equipment malfunctions, it will directly affect the deoxygenation effect and boiler operation safety. Boiler deaerator does not require complex supporting equipment, only a simple dosing device is needed, and the equipment investment is only two-thirds or even lower than that of thermal deaeration. It occupies a small area and is suitable for installation and use in various sites.

In terms of daily operation and maintenance, the boiler deaerator only needs to regularly detect the dissolved oxygen content in the water, adjust the dosage according to the test results, and the operation and maintenance process is simple and the workload is small, which can greatly reduce manpower investment. At the same time, the boiler deaerator can form a dense anti-corrosion protective film on the metal surface of the boiler, effectively preventing harmful gases and ions in the boiler water from corroding the metal, reducing equipment failure rates, further reducing operation and maintenance costs, and extending the service life of the boiler.

Overall, compared to traditional thermal deoxygenation,Boiler deoxygenation agentIt has significant advantages in terms of deoxygenation efficiency, energy saving and consumption reduction, applicability, environmental protection, and convenient operation and maintenance. It can not only effectively ensure the safe and stable operation of boiler equipment, extend the service life of equipment, but also reduce the operating costs of enterprises, which meets the needs of green industry development. With the continuous upgrading of industrial water treatment technology, new environmentally friendly boiler deoxygenation agents will gradually replace traditional thermal deoxygenation methods and become the mainstream choice for industrial boiler deoxygenation, providing reliable guarantees for the safe operation of boiler systems in various industries.