Cryogenic Liquid Nitrogen (LN2) Vessels
Cryogenic liquid nitrogen (LN2) vessels are specialized pressure containers designed to store and transport liquid nitrogen at its boiling point of -320°F (-196°C). These vessels feature advanced vacuum insulation systems with multi-layer insulation (MLI) to minimize heat leak and maintain the extremely low temperatures required for liquid nitrogen service.
Why are Cryogenic Liquid Nitrogen (LN2) Vessels Needed?
Liquid nitrogen vessels are essential for industries requiring reliable storage and delivery of this versatile cryogenic fluid. LN2 is used extensively for freezing, cooling, inerting, and preservation applications across food processing, healthcare, research, and manufacturing. Properly designed vessels minimize boil-off losses and ensure safe, efficient nitrogen supply.
Cryogenic Liquid Nitrogen (LN2) Vessels Applications
Common applications include:
- Food freezing and processing
- Medical and laboratory specimen preservation
- Cryogenic grinding and deflashing
- Semiconductor manufacturing
- Metal heat treatment and shrink fitting
- Research and scientific applications
Cryogenic Liquid Nitrogen (LN2) Vessels Specifications
At Roben, Mfg, Inc., we offer comprehensive options including:
- Operating temperature: -320°F (-196°C)
- Capacities from 50 liters to 50,000+ gallons
- Vacuum insulation with MLI or perlite
- Daily evaporation rates as low as 0.1%
- Working pressures from 22 psig to 500+ psig
Certifications and Standards
Our cryogenic pressure vessels are designed and manufactured in accordance with stringent industry standards:
- ASME Section VIII Division 1 & 2: Pressure vessel design and fabrication standards
- ASME Section IX: Welding procedures and qualifications
- CGA Standards: Compressed Gas Association requirements for cryogenic vessels
- NBIC: National Board Inspection Code compliance
- DOT/TC: Department of Transportation certification for transport vessels
- U Stamp & R Stamp: ASME certification for new construction and repairs
Cryogenic Liquid Nitrogen (LN2) Vessels Frequently Asked Questions (FAQs)
What is the typical holding time for liquid nitrogen vessels?
Holding time depends on vessel size, insulation quality, and usage patterns. Our LN2 vessels achieve daily evaporation rates as low as 0.1-0.5% for large stationary tanks and 1-2% for smaller portable dewars. This translates to holding times of weeks to months depending on the specific vessel design and application.
What safety features are included on LN2 vessels?
Standard safety features include dual pressure relief devices, rupture discs for vacuum jacket protection, pressure gauges, liquid level indicators, and pressure building circuits. All vessels are designed to ASME Section VIII and CGA S-1.1 standards with appropriate safety factors for cryogenic service.
Can LN2 vessels be designed for mobile applications?
Yes, we fabricate liquid nitrogen vessels for mobile applications including delivery trucks, trailers, and portable dewars. Mobile vessels include appropriate mounting provisions, road shock protection, and DOT/TC certification for highway transport. Vacuum jacketed piping systems enable efficient transfer operations.
Contact Roben, Mfg, Inc.
For more information about our cryogenic insulated pressure vessel solutions or to request a quote, please contact Roben, Mfg, Inc. today. Our experienced engineering team is ready to assist you in developing the perfect solution for your unique cryogenic application requirements.
Phone: (732) 364-6000 | Email: sales@robenmfg.com
760 Vassar Ave, Lakewood, NJ 08701
