N₂ Buffer Tank: Efficient Nitrogen Storage for Industrial Applications

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Find high-quality buffer tanks for LNG storage. Our tanks are designed to meet strict industry standards and ensure safe and efficient LNG operations.

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Technical Parameters

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Nitrogen surge tanks are a critical component in any nitrogen system. This tank is responsible for maintaining proper nitrogen pressure and flow throughout the system, ensuring its optimal performance. Understanding the characteristics of a nitrogen surge tank is critical to ensuring its efficiency and effectiveness.

One of the main features of a nitrogen surge tank is its size. The tank size should be sufficient to store the appropriate amount of nitrogen to meet the needs of the system. The size of the tank depends on factors such as the required flow rate and duration of operation. A nitrogen surge tank that is too small may result in frequent refills, resulting in downtime and reduced productivity. On the other hand, an oversized tank may not be cost-effective because it consumes too much space and resources.

Another important feature of a nitrogen surge tank is its pressure rating. Tanks should be designed to withstand the pressure of the nitrogen being stored and distributed. This rating ensures the safety of the tank and prevents any potential leaks or failures. It is critical to consult with an expert or manufacturer to ensure that the tank’s pressure rating meets the specific requirements of your nitrogen system.

The materials used to construct the nitrogen surge tank are also an important feature to consider. Storage tanks should be constructed of corrosion-resistant materials to prevent possible chemical reactions or deterioration from contact with nitrogen. Materials such as stainless steel or carbon steel with appropriate coatings are often used due to their durability and corrosion resistance. The materials selected should be compatible with nitrogen to ensure tank longevity and performance.

The design of the N₂ buffer tank also plays a crucial role in its characteristics. Well-designed tanks should include features that allow for efficient operation and maintenance. For example, storage tanks should have appropriate valves, pressure gauges and safety devices to ensure easy monitoring and control. Also, consider whether the tank is easy to inspect and maintain, as this will affect its longevity and reliability.

Proper installation and maintenance are critical to maximizing the characteristics of a nitrogen surge tank. Tanks should be installed correctly in accordance with manufacturer's guidelines and industry standards. Regular inspection and maintenance activities, such as checking for leaks, ensuring valve functionality and assessing pressure levels, should be performed to identify any potential problems or deterioration. Prompt, appropriate action should be taken to resolve any problems to prevent system disruption and maintain tank effectiveness.

The overall performance of a nitrogen surge tank is affected by its various characteristics, which are primarily determined by the specific requirements of the nitrogen system. A thorough understanding of these characteristics allows for proper tank selection, installation, and maintenance, resulting in an efficient and reliable nitrogen system.

In summary, the characteristics of a nitrogen surge tank, including its size, pressure rating, materials, and design, significantly affect its performance in a nitrogen system. Proper consideration of these characteristics ensures that the tank is appropriately sized, able to withstand pressure, constructed of corrosion-resistant materials, and has a well-designed structure. The installation and regular maintenance of a storage tank are equally important to maximize its efficiency and effectiveness. By understanding and optimizing these characteristics, nitrogen surge tanks can contribute to the overall success of the nitrogen system.

Product Applications



The use of nitrogen (N₂) surge tanks is essential in industrial processes where pressure and temperature control are critical. Designed to regulate pressure fluctuations and ensure stable gas flow, nitrogen surge tanks play a key role in a variety of applications in industries such as chemical, pharmaceutical, petrochemical and manufacturing.

The primary function of a nitrogen surge tank is to store nitrogen at a specific pressure level, usually above the system's operating pressure. The stored nitrogen is then utilized to compensate for pressure drops that may occur due to changes in demand or changes in gas supply. By maintaining a stable pressure, buffer tanks facilitate the continuous operation of the system, preventing any interruptions or defects in production.

One of the most prominent applications for nitrogen surge tanks is in chemical manufacturing. In this industry, precise control of pressure is critical to ensuring safe and efficient chemical reactions. Surge tanks integrated into chemical processing systems help stabilize pressure fluctuations, thereby reducing the risk of accidents and ensuring consistent product output. In addition, surge tanks provide a nitrogen source for blanketing operations, where removal of oxygen is critical to prevent oxidation or other unwanted reactions.

In the pharmaceutical industry, nitrogen surge tanks are widely used to maintain precise environmental conditions in clean rooms and laboratories. These tanks provide a reliable source of nitrogen for a variety of purposes, including purifying equipment, preventing contamination and maintaining product integrity. By effectively managing pressure, nitrogen surge tanks contribute to overall quality control and compliance with industry regulations, making them an important asset in pharmaceutical production.

Petrochemical plants involve handling large quantities of volatile and flammable substances. Therefore, safety is crucial for such facilities. Nitrogen surge tanks are used here as a precautionary measure against explosion or fire. By maintaining a consistently higher pressure, surge tanks protect process equipment from potential damage caused by sudden changes in system pressure.

In addition to the chemical, pharmaceutical and petrochemical industries, nitrogen surge tanks are widely used in manufacturing processes that require precise pressure control, such as automotive production, food and beverage processing, and aerospace applications. In these industries, nitrogen surge tanks help maintain constant pressure in various pneumatic systems, ensuring uninterrupted operation of critical machinery and tools.

When selecting a nitrogen surge tank for a specific application, several factors must be considered. These factors include required tank capacity, pressure range and materials of construction. It is important to select a tank that can adequately meet the flow and pressure needs of the system, while also considering factors such as corrosion resistance, compatibility with the operating environment, and regulatory compliance.

In summary, nitrogen surge tanks are an indispensable component in a variety of industrial applications, providing much-needed pressure stability to ensure safe and efficient operations. Its ability to compensate for pressure fluctuations and provide a steady flow of nitrogen makes it a vital asset in industries where precise control and reliability are critical. By investing in the right nitrogen surge tank, companies can increase operational efficiency, reduce risk, and maintain production integrity, ultimately contributing to overall success in today's competitive industrial environment.


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  • Design parameters and technical requirements
    serial number project container
    1 Standards and specifications for design, manufacture, testing and inspection 1. GB/T150.1~150.4-2011 “Pressure Vessels”.
    2. TSG 21-2016 “Safety Technical Supervision Regulations for Stationary Pressure Vessels”.
    3. NB/T47015-2011 “Welding Regulations for Pressure Vessels”.
    2 design pressure         MPa 5.0
    3 work pressure  MPa 4.0
    4 set tempreture    ℃ 80
    5 Operating temperature    ℃ 20
    6 medium Air/Non-toxic/Second Group
    7 Main pressure component material Steel plate grade and standard Q345R   GB/T713-2014
    recheck /
    8 Welding materials submerged arc welding H10Mn2+SJ101
    Gas metal arc welding, argon tungsten arc welding, electrode arc welding ER50-6,J507
    9 Weld joint coefficient 1.0
    10 Lossless
    Type A, B splice connector NB/T47013.2-2015 100% X-ray, Class II, Detection Technology Class AB
    NB/T47013.3-2015 /
    A, B, C, D, E type welded joints NB/T47013.4-2015 100% magnetic particle inspection, grade
    11 Corrosion allowance   mm 1
    12 Calculate thickness   mm Cylinder: 17.81 Head: 17.69
    13 full volume      m³ 5
    14 Filling factor /
    15 heat treatment /
    16 Container categories Class II
    17 Seismic design code and grade level 8
    18 Wind load design code and wind speed Wind pressure 850Pa
    19 test pressure Hydrostatic test (water temperature not lower than 5°C)     MPa /
    air pressure test                      MPa 5.5 (Nitrogen)
    Air tightness test MPa /
    20 Safety accessories and instruments pressure gauge Dial: 100mm Range: 0~10MPa
    safety valve set pressure:MPa 4.4
    nominal diameter DN40
    21 surface cleaning JB/T6896-2007
    22 Design service life 20 years
    23 Packaging and Shipping According to the regulations of NB/T10558-2021 “Pressure Vessel Coating and Transport Packaging”
    “Note: 1. The equipment should be effectively grounded, and the grounding resistance should be ≤10Ω.2. This equipment is regularly inspected according to the requirements of TSG 21-2016 “Safety Technical Supervision Regulations for Stationary Pressure Vessels”. When the corrosion amount of the equipment reaches the specified value in the drawing ahead of time during the use of the equipment, it will be stopped immediately.3. The orientation of the nozzle is viewed in the direction of A.  “
     Nozzle table
    symbol Nominal size Connection size standard Connecting surface type purpose or name
    A DN80 HG/T 20592-2009 WN80(B)-63  RF air intake
    B / M20×1.5 Butterfly pattern Pressure gauge interface
    ( DN80 HG/T 20592-2009 WN80(B)-63  RF air outlet
    D DN40 / welding Safety valve interface
    E DN25 / welding Sewage Outlet
    F DN40 HG/T 20592-2009 WN40(B)-63  RF thermometer mouth
    M DN450 HG/T 20615-2009 S0450-300  RF manhole
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