Cryogenic Storage Vessels
What Are Cryogenic Storage Vessels?
A cryogenic storage vessel is a double-wall pressure containment system specifically engineered for storing liquefied gases at extremely low temperatures, featuring an inner pressure vessel surrounded by a vacuum-insulated outer jacket designed to minimize heat transfer from the ambient environment. These vessels maintain cryogenic liquids including nitrogen (77K), oxygen (90K), argon (87K), hydrogen (20K), and helium (4K) in their liquid state with minimal boil-off through combinations of high vacuum, multilayer insulation, and vapor-cooled shields. Cryogenic storage vessels range from portable dewars to multi-million-gallon bulk storage tanks serving industrial gas supply chains.
Why Choose Cryogenic Storage Vessels?
Cryogenic Storage Vessels offer several critical advantages:
- Minimal Boil-Off: Advanced vacuum insulation systems achieve heat leak rates below 0.5% per day, minimizing product loss
- Extended Hold Times: Superior thermal performance maintains liquid inventory for weeks or months between deliveries
- Safe Pressure Containment: Inner vessels designed for the vapor pressure characteristics of specific cryogens
- Reliable Temperature Maintenance: Consistent cryogenic temperatures maintained without external refrigeration
- Long Service Life: Stainless steel construction and vacuum integrity ensure decades of reliable operation
Key Features of Cryogenic Storage Vessels
- Double-wall construction with evacuated annular space
- Vacuum levels from 10⁻³ to 10⁻⁶ torr depending on application
- Multilayer insulation (MLI) or perlite fill insulation systems
- Inner vessel materials: 304L, 316L, 9% nickel, aluminum alloys
- Pressure ratings from 15 PSIG to 500+ PSIG
- Integral pressure building coils and vaporizers
- Capacities from 50 liters to millions of gallons
Cryogenic Storage Vessels Applications
- Industrial gas bulk storage and distribution
- Medical facility oxygen and nitrogen supply
- Semiconductor fabrication gas supply
- Food processing freezing and chilling
- Research laboratory cryogen supply
- Aerospace propellant storage
- Superconducting system cryogen supply
Industries Served
- Industrial Gas Production and Distribution
- Healthcare and Medical Facilities
- Semiconductor Manufacturing
- Food and Beverage Processing
- Aerospace and Defense
- Research and Academia
- Energy and Power Systems
Industry Compliance and Certifications
Roben Mfg vacuum-insulated vessels are designed and fabricated to meet the highest industry standards:
- ASME Section VIII, Division 1 and Division 2 (Pressure Vessel Code)
- ASME B31.3 (Process Piping)
- National Board Registration
- PED (Pressure Equipment Directive) 2014/68/EU for European applications
- CRN (Canadian Registration Number) for Canadian provinces
Quality Assurance and Testing
Every Roben Mfg vacuum-insulated vessel undergoes comprehensive quality assurance:
- Welding procedures qualified per ASME Section IX
- 100% radiographic or ultrasonic examination of pressure-boundary welds
- Hydrostatic testing of inner vessels to 1.5x MAWP
- Helium leak testing of vacuum boundaries to 10⁻⁹ std cc/sec
- Complete material traceability and certification documentation
Frequently Asked Questions About Cryogenic Storage Vessels
What boil-off rates are achievable with cryogenic storage vessels?
Our cryogenic storage vessels achieve boil-off rates from 0.1% to 0.5% per day depending on vessel size and insulation system. Larger vessels with MLI insulation approach the lower end of this range, while smaller vessels or those with perlite insulation typically show higher rates.
What materials are used for cryogenic storage vessel construction?
Inner vessels are fabricated from cryogenic-grade stainless steel (304L, 316L), 9% nickel steel, or aluminum alloys depending on the specific cryogen and design temperature. Outer jackets typically use carbon steel or stainless steel depending on environmental exposure.
How is vacuum maintained in cryogenic storage vessels over time?
Initial high vacuum is achieved through pump-down and bake-out procedures. Long-term vacuum is maintained by minimizing outgassing through material selection, using molecular sieve or charcoal getters to absorb residual gases, and ensuring leak-tight construction verified by helium leak testing.
Contact Roben Mfg, Inc.
For custom vacuum-insulated vessel quotations and technical consultations:
Roben, Mfg, Inc.
3855 Oakton Street
Skokie, Illinois 60076
Phone: 847-679-7430
Email: info@robenmfg.com
Website: www.robenmfg.com
