​Cryogenic Liquid Storage Tanks: Specifications and Considerations

   Cryogenic Liquid Storage Tanks: Specifications and Considerations

Cryogenic liquid storage tanks are specialized pressure vessels engineered to safely and efficiently store liquefied gases at extremely low temperatures. These tanks are vital in a wide range of industries, including healthcare, manufacturing, aerospace, and research. Understanding the specifications and features of these tanks is crucial for selecting the right equipment for your needs.

Key Parameters and Models

The following table outlines the critical parameters for various cryogenic liquid tank models. These parameters are essential for determining the suitability of a tank for a specific application.

Understanding the Parameters:

• Model:  A unique identifier for the specific tank design.

• Working Pressure (MPa): The maximum pressure the tank is designed to withstand during normal operation.  Crucial for safety and compatibility with the intended application.  Higher pressure ratings may be required for certain processes or storage durations.

• Working Medium: The type of cryogenic liquid the tank is designed to store (LO2 - Liquid Oxygen, LN2 - Liquid Nitrogen, LAr - Liquid Argon, LCO2 - Liquid Carbon Dioxide).  Material compatibility is paramount to prevent corrosion or degradation.

• Volume (m³): The tank's storage capacity, measured in cubic meters. Select a volume appropriate for your consumption rate and resupply schedule.

• Outside Size (mm): The external dimensions of the tank, including diameter and height.  Important for ensuring the tank fits within the designated installation space.

• Weight (kg): The tank's weight when empty.  This is critical for transportation, installation, and foundation design.

Key Considerations When Selecting a Cryogenic Liquid Tank

Beyond the specific parameters listed above, several other factors influence the selection of a cryogenic liquid tank:

• Material of Construction:  Typically, cryogenic tanks are constructed from materials like stainless steel due to its excellent low-temperature properties.  The specific grade of stainless steel is chosen based on the cryogenic liquid being stored.

• Insulation:  Effective insulation is critical to minimize heat leak into the tank and reduce boil-off losses.  Common insulation methods include vacuum insulation and perlite insulation.

• Safety Features:  Cryogenic tanks must incorporate various safety features, such as pressure relief valves, emergency shut-off valves, and level indicators.  These features are essential for preventing accidents and ensuring safe operation.

• Regulatory Compliance:  Cryogenic tanks are subject to stringent regulations and standards to ensure safety and environmental protection.  Ensure that the tank you select complies with all applicable regulations in your region.

Quality Assurance: Painting, Vacuum, and Valves

Painting:

1. Surface Treatment: A high-quality paint finish is essential for protecting the tank from corrosion and environmental damage. The application process involves a multi-layer system: two coats of primer and one coat of acrylic polyurethane or imported finish paint. This ensures a durable and long-lasting protective layer.

2. Total Thickness: The total paint thickness exceeds 200 microns, providing excellent resistance to abrasion, chemicals, and UV radiation.

Vacuum Insulation:

1. Preparation: To ensure optimal vacuum performance, the inner cylinder undergoes a circulation heating process to remove any moisture or contaminants. This is crucial for achieving a high vacuum level.

2. Vacuum Stability: Rigorous static observation is conducted to verify that the vacuum level remains stable over an extended period (typically one month). This confirms the integrity of the insulation system.

3. Nitrogen Testing:  Gas nitrogen, free from water and oil, is used for pressure testing. This eliminates the risk of contamination and ensures the cleanliness of the tank's internal surfaces.

Valves:

1. Valve Quality: The company uses Chinese high-quality valves. Import valves can also be provided according to customers' requirements.

Certifications and Licenses

Our company holds the following certifications and licenses:

• National-level A2 pressure vessel manufacture license

• D1/D2 pressure vessel design license

• ISO9001 International Quality System Certificate

• GC2/GC3 pressure piping design license

• GC2/GC3 pressure piping installation license

• CCS authentication

• CE authentication

• ASME authentication

These qualifications demonstrate our commitment to quality, safety, and compliance with international standards. We provide comprehensive engineering design, installation, inspection, and maintenance services for cryogenic liquid storage tanks.

Cryogenic liquid storage tanks are critical components in many industries. By carefully considering the parameters, features, and quality assurance measures described above, you can select the right tank for your specific needs and ensure safe and efficient storage of cryogenic liquids. Consult with our experienced team to discuss your requirements and find the optimal solution for your application.