Vacuum Insulated Pressure Vessel LNG Cryogenic Oxygen Liquid Storage Tank with Stainless Steel Inner Shell for Liquid Nitrogen

• Customization: Available
• After-sales Service: 2 Years
• Warranty: 2 Years
• Model NO.: 100
• Function: Storage Pressure Vessel, Separation Pressure Vessel, Heat Pressure Vessel, Reaction Pressure Vessel, Gas, Liquid, LNG, Lox, Lin, Lar, Lco2
• Application: Mixture,Element,Gas,Liquid,LNG,Lox,Lin,Lar,Lco2
• Material: Stainless Steel & Carbon Steel
• Pressure: Customized
• Storage Medium: Customized
• Pressure Level: Customized
• Condition: New
• Type: Cryogenic Tank
• Insulation Structure Type: Double-Wall Vacuum Powder Insulation / High Vacuum
• Inner Vessel Material: Stainless Steel S30408 (SS304) / S31608
• Outer Shell Material: Carbon Steel Q245r / Q345r
• Absolute Vacuum Degree: Less Than 0.2 PA
• Transport Package: Seaworthy Safe Packaging
• Specification: 20m³, 50m³, 100m³, 200m³
• Trademark: ZHONGNENG HUAJIAN
• Origin: China
• Production Capacity: 20000 Tons / Year

Product Description

Product Description

High-Vacuum Insulated Cryogenic Liquid Storage Tanks

Manufactured by Zhongneng Huajian, our premium cryogenic storage tanks are engineered to provide maximum thermal efficiency and safe long-term storage for liquefied gases, including LNG, liquid nitrogen, liquid oxygen, liquid argon, and liquid carbon dioxide. Fully compliant with ASME Section VIII and GB/T 18442 international codes, these double-walled vessels incorporate advanced high-vacuum multilayer perlite insulation tech, delivering an exceptionally low evaporation rate and structural integrity for global industrial gas suppliers, hospitals, and energy fueling stations.

Engineered for Extreme Thermal Efficiency

Ultra-Low Daily Evaporation: Utilizing premium evacuated perlite powder or multi-layer reflective insulation, minimizing boil-off gas (BOG) losses to save operational costs.
Superior Material Metallurgy: Constructed with high-purity S30408 stainless steel for the inner liquid container to eliminate low-temperature embrittlement, paired with a heavy-duty carbon steel outer vacuum jacket.
Lifetime Vacuum Stability: Enhanced with dedicated internal chemical getters and a rigorous sealing process, guaranteeing decades of stable vacuum maintenance underground or aboveground.

Specification

Technical Parameter Item	Specifications & Engineering Data
Brand / Manufacturer	Zhongneng Huajian
Design Standards Compliance	ASME Section VIII Div.1 (U Stamp Optional), GB/T 18442
Nominal Volume Capacity	5 m³ up to 200 m³ (Standard 20m³, 50m³, 100m³ available)
Insulation Technology	High Vacuum Perlite Powder Insulation / Multi-layer Insulation
Inner Vessel Metallurgy	Stainless Steel S30408 / S31608 / SUS304
Outer Jacket Metallurgy	Carbon Steel Q245R / Q345R / Q345R(R-HIC)
Maximum Working Pressure	0.8 MPa, 1.6 MPa, 2.2 MPa, 3.5 MPa (Tailored to pipe networks)
Factory Sealed Vacuum	≤ 0.2 Pa (Tested via digital vacuum meters)
Quality NDT Inspections	100% X-Ray Testing (RT) + 100% Helium Mass Spectrometer Leak Test

Core Manufacturing & Vacuum Technologies

Elite Advanced High-Vacuum Filling & Baking Process

Our factory uses a state-of-the-art computer-controlled automated system to fill premium perlite sand evenly into the interstitial cavity. This is combined with a prolonged heating and dynamic vacuum pumping cycle to ensure moisture is completely evacuated from the interspace. Internal chemical absorbents (getters) are added to capture any residual outgassing molecules over time, ensuring a sustainable thermal vacuum environment.

100% Helium Mass Spectrometer Leak Detection

To prevent microscopic leaks that could destroy vacuum integrity under ultra-low temperatures, the entire vessel undergoes a full-scale Helium Mass Spectrometer Leak Test. Every single nozzle, valve junction, and automatic submerged arc weld seam is stringently scanned, achieving an elite leak-tightness guarantee.

Company Profile

Packaging & Shipping

Certifications

FAQ

Frequently Asked Questions

Q1: How do you guarantee the long-term vacuum stability of your cryogenic tanks?

A: Zhongneng Huajian employs a multi-step vacuum assurance system. First, our specialized baking process thoroughly drives out moisture from the perlite powder. Second, we integrate advanced palladium and molecular sieve getters inside the vacuum layer to continuously absorb outgassed molecules. Finally, every tank passes a 7-day static vacuum holding test before shipping out to guarantee long-term reliability.

Q2: Can your cryogenic storage tanks be certified with the ASME U-Stamp for overseas markets?

A: Yes, absolutely. As an authorized pressure vessel manufacturer, our engineering team designs and fabricates cryogenic tanks strictly in accordance with ASME Section VIII Division 1 specifications. We coordinate with international third-party inspectors (such as SGS, TUV, or BV) to issue official U-Stamp certification and quality data books per request.

Q3: What are the layout differences when storing LNG compared to Liquid CO2?

A: While the general insulation principles are similar, Liquid CO2 tanks usually operate at higher pressures (typically 2.1 MPa to 2.2 MPa) and warmer temperatures (around -20°C) compared to LNG tanks (-162°C). Consequently, we optimize the inner shell wall thickness, insulation density, and valve manifold ratings specifically to handle the unique thermodynamic profiles of each medium.