Vertical Large-Scale LNG Cryogenic Storage Tanks

Product Structure

• Double-Wall Containment: A “tank-within-a-tank” design featuring a high-alloy inner vessel for liquid containment and a carbon steel outer jacket for vacuum protection.

• High-Vacuum Interlayer: The space between shells is filled with expanded perlite or multi-layer insulation (MLI) and evacuated to a high vacuum to eliminate convective and conductive heat transfer.

• Cryogenic Suspension System: Low-conductivity internal supports that secure the inner vessel while minimizing “heat bridges” between the warm outer shell and cold inner tank.

• Integrated Top/Bottom Filling: Dual filling lines allow for top or bottom loading to manage pressure and prevent liquid stratification (rollover).

• Safety Relief Cluster: Redundant, high-capacity safety valves and bursting discs designed to handle emergency venting and vacuum loss scenarios.

• Standard Access Infrastructure: Includes top-mounted instrument platforms and vertical ladders with safety cages for routine inspection.

Product Advantages

• Extreme Thermal Efficiency: Advanced vacuum technology ensures exceptionally low boil-off rates, preserving product volume and reducing the need for vapor recovery energy.

• Enhanced Safety Profile: The double-containment design provides an extra layer of protection against leaks, with integrated sensors for real-time vacuum monitoring and leak detection.

• Compact Vertical Footprint: Engineered to provide massive storage capacities (up to 5,000m³+ per unit) while minimizing the ground area required, ideal for space-constrained terminals.

• Long-Term Structural Reliability: Inner vessels are fabricated from specialized cryogenic steels that remain ductile and crack-resistant at temperatures where standard steel becomes brittle.

• Rapid Deployment: Modular internal piping and standardized valve manifolds allow for faster on-site installation and commissioning compared to traditional full-containment concrete tanks.

Material & Specifications

Feature	Specification
Inner Vessel Material	Stainless Steel (SUS304 / 316L) or 9% Nickel Steel
Outer Shell Material	High-Quality Carbon Steel (Q235B / Q345R)
Insulation Media	Expanded Perlite + High Vacuum or Multi-layer Foil
Design Standards	ASME VIII, EN 13445, GB/T 18442, or API 620 Appendix Q
Testing Protocol	Helium mass spectrometer leak detection and 100% NDT on inner welds

Technical Parameters

• Working Temperature Range: Down to -196°C (Liquid Nitrogen) / -162°C (LNG Standard).

• Design Pressure: Typically 0.2 MPa to 1.2 MPa depending on the application and BOR requirements.

• Daily Evaporation Rate: ≤ 0.1% to 0.3% (varies by tank volume and insulation grade).

سيناريوهات التطبيق

• LNG Receiving Terminals: Bulk primary storage for imported liquefied gas before regasification and pipeline distribution.

• Peak-Shaving Stations: Strategic gas reserves used by municipalities to supplement supply during periods of high winter demand.

• Industrial Power Generation: On-site fuel storage for gas-fired turbines and heavy industrial manufacturing plants.

• LNG Bunkering Hubs: Refueling infrastructure for LNG-powered maritime vessels and heavy-duty transport fleets.

• Satellite Stations: Regional storage for areas not reached by natural gas pipelines, providing a reliable local energy source.

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