High Capacity Cryogenic Liquid Nitrogen Plant
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Our High Capacity Cryogenic Liquid Nitrogen Plant is designed for industries requiring a stable, continuous, and cost-effective supply of ultra-pure liquid nitrogen. Integrating advanced cryogenic air separation technology, turbo-expander systems, and automated process control, the plant converts atmospheric nitrogen into high-quality liquid nitrogen with purity levels up to 99.9999%.
Built for demanding industrial environments, this system combines high-efficiency liquefaction, vacuum-insulated storage, and intelligent monitoring to ensure reliable operation under extreme cryogenic conditions. From medical cryopreservation and food freezing to aerospace testing and industrial cooling, the plant provides a dependable on-site LN₂ supply solution that reduces dependence on external gas delivery and improves long-term operational efficiency.
The liquid nitrogen plant adopts advanced cryogenic air separation technology to produce high-purity liquid nitrogen from atmospheric air through a continuous and fully automated process.
The production process includes:
Air Filtration & Compression – Ambient air passes through multi-stage filtration to remove dust, moisture, and carbon dioxide before entering high-efficiency compressors that provide stable operating pressure.
Air Purification – Molecular sieve adsorption systems eliminate residual moisture, hydrocarbons, and CO₂, ensuring reliable downstream cryogenic separation.
Cryogenic Cooling & Liquefaction – Purified air is cooled to approximately -196°C using advanced heat exchangers and turbo-expanders, allowing nitrogen to liquefy with high energy efficiency.
Fractional Distillation – The liquefied air enters a precision distillation column where nitrogen is separated from oxygen and argon according to their different boiling points, achieving purity up to 99.9999%.
Storage & Distribution – The produced liquid nitrogen is transferred into vacuum-insulated storage tanks and delivered through insulated pipelines or cryogenic containers for continuous industrial use.
Our liquid nitrogen generation systems are built to maximize yield while maintaining strict risk management protocols. Every component is engineered to withstand deep cryogenic temperatures and high-pressure environments, ensuring uninterrupted facility operations.
High-Capacity Production – Generates 500 to 50,000 liters per day (LPD) of 99.999% pure liquid nitrogen, providing a scalable solution that adapts fluidly to expanding operational demands.
Advanced Storage Tanks – Vacuum-insulated cryogenic tanks (ISO-compliant) with minimal boil-off loss (<0.3% per day). The multi-layered thermal shielding ensures the ultra-cold liquid remains stable, preventing costly vaporization.
Safe Transportation Solutions – Equipped with mobile cryogenic containers (dewars & trailers) for secure LN2 delivery, featuring reinforced outer shells that withstand the rigors of heavy transit.
Energy-Efficient Liquefaction – Turbo-expander & nitrogen cycle technology reduce power consumption by 25-40%, directly lowering utility overhead and improving the overall financial performance of the installation.
Automated Control System – Real-time monitoring of temperature, pressure, and fill levels via Internet. This includes multiple overpressure protection mechanisms and automatic leak alarms to safeguard personnel and assets.
From preserving delicate biological matter to cooling heavy industrial machinery, this plant serves a diverse array of critical sectors. Our global success cases demonstrate proven adaptability across different climates and strict regulatory landscapes.
Medical & Biotech – Long-term cryogenic storage of biological samples, vaccines, and stem cells, ensuring absolute thermal consistency to prevent cellular degradation.
Food & Beverage – Cryogenic freezing & chilling for perishable goods during transit, locking in moisture and cellular structure while extending shelf life dramatically.
Industrial Cooling – Superconducting magnet cooling, shrink-fitting, and laser cutting, where the intense cold provides precise thermal contraction and prevents overheating in heavy-duty tools.
Aerospace – Cryogenic fuel testing & component cooling, simulating the harsh, freezing vacuum of space for rigorous material durability assessments.
Energy – LNG pre-cooling & hydrogen liquefaction support, acting as a reliable cooling medium to stabilize volatile energy resources during complex processing.
Managing cryogenic liquids requires specialized containment. We provide comprehensive project delivery, from foundation planning and heavy equipment hoisting to final pipeline welding, ensuring your storage infrastructure is flawlessly integrated.
On-Site Storage:
Vertical/horizontal cryogenic tanks (5,000L to 100,000L capacity), constructed with thick, double-walled stainless steel that feels cool and solid to the touch, reflecting superior insulation.
Auto-pressurization & vapor recovery systems to minimize waste, capturing escaping gas and recycling it to maintain optimal internal pressure equilibrium.
Transportation:
Cryogenic tankers (10,000L to 40,000L) with GPS tracking, allowing fleet managers to monitor the exact location and internal conditions of the payload during cross-country transit.
Portable dewars (10L to 500L) for lab/small-scale use, featuring ergonomic handles and precision-engineered pouring mechanisms for safe, controlled dispensing.
Every unit undergoes rigorous non-destructive testing (NDT) and comprehensive factory acceptance testing (FAT) before deployment. This ensures that all pressure vessels, valves, and piping networks operate with zero defects under extreme sub-zero conditions.
Purity: 99.9% to 99.9999% (O₂ ≤ 1 ppm) – Delivering exceptional gas refinement for highly sensitive laboratory and manufacturing applications.
Operating Pressure: 6–18 bar (customizable) – Flexible pressure settings to align perfectly with specific downstream equipment requirements.
Cooling Methods: water or air – Adaptable thermal management systems depending on site utility availability and environmental constraints.
Compliance: ASME, and ISO safety standards – Strictly adhering to international pressure vessel and specialized equipment manufacturing directives (including CE/PED equivalents) for global market access.
Item | Specification |
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Product Name | High Capacity Cryogenic Liquid Nitrogen Plant |
Technology | Cryogenic Air Separation (ASU) |
Nitrogen Purity | 99.9%–99.9999% |
Liquid Nitrogen Capacity | 500–50,000 LPD (Customizable) |
Nitrogen Gas Capacity | Customized according to project requirements |
Operating Pressure | 6–18 bar (Customizable) |
Liquid Nitrogen Temperature | Approximately -196°C |
Oxygen Content | ≤1 ppm (Optional) |
Cooling Method | Air Cooling / Water Cooling |
Control System | Fully Automatic PLC + HMI Touch Screen |
Automation Level | Fully Automatic / Remote Monitoring Optional |
Compressor Type | Oil-Free Screw or Centrifugal Compressor |
Heat Exchanger | Aluminum Plate-Fin Heat Exchanger |
Turbo Expander | High-Efficiency Cryogenic Turbo Expander |
Storage Tank | Vacuum Insulated Cryogenic Storage Tank |
Tank Capacity | 5,000–100,000 L (Optional) |
Power Supply | 380V / 400V / 415V / 440V / Customized |
Frequency | 50Hz / 60Hz |
Installation Type | Skid-Mounted / Containerized / Fixed Plant |
Continuous Operation | 24 Hours / 365 Days |
Energy Saving | Up to 25–40% Lower Energy Consumption* |
Ambient Temperature | -20°C to +45°C (Customizable) |
Design Life | ≥20 Years |
Standards | ASME, CE, ISO9001 |
Partnering with us means securing a complete, end-to-end engineering solution. We focus on minimizing downtime and maximizing output, ensuring your facility remains productive and profitable year-round.
Turnkey Installation – Includes engineering, commissioning, and operator training. Our field experts handle everything from initial site surveys and pipeline routing to the final joint-commissioning phase.
Low Maintenance – Redundant compressors & automated purge systems. By utilizing interchangeable backup components, the system automatically bypasses faults, keeping the plant running while maintenance is performed.
Global Support – 24/7 emergency service & spare parts network. With localized distribution hubs, we ensure rapid dispatch of critical replacements, drastically reducing potential operational interruptions.
1. Are you the manufacturer of this equipment？
Yes, we are an experienced manufacturer specializing in this field for 25 years. Our extensive production facilities house advanced fabrication machinery, allowing us to maintain strict quality control over every pressure vessel and distillation column we build.
2. Can the system be customized to meet specific requirements？
We provide custom-engineered solutions for different applications. Whether you need specific footprint adjustments, localized control panels, or specialized output pressures, our engineering team will design a blueprint tailored to your exact operational landscape.
3. Have your products been deployed in global markets?
Yes, we have successfully supplied our air separation plants to over 50 countries worldwide, complying with international standards like ASME. Our portfolio includes heavy industrial installations in extreme climates, proving the durability and versatility of our engineering.
4. What after-sales services do you provide?
We offer comprehensive after-sales support including:
✔ Technical Consultation - 24/7 expert guidance to optimize your daily output.
✔ Remote Monitoring - Real-time system performance tracking to preemptively identify maintenance needs.
✔ Maintenance Packages - Scheduled inspections & consumable replacements to extend equipment lifespan.
✔ On-site Service - Engineer oversea service available for complex diagnostics and major overhauls.
✔ Spare Parts Supply - Original components with 18-month warranty, ensuring exact fit and function.
✔ Operator Training - Customized programs for client's technical team, teaching best practices for cryogenic safety.
6.Do you offer technical support services?
We cordially invite you to visit our manufacturing facility or participate in our online technical exchange seminar for detailed discussions. Seeing the scale of our production and the precision of our welding firsthand provides absolute confidence in our capabilities.
We welcome you to reach out to our technical specialists for detailed consultations and customized solutions designed to elevate your facility's gas processing infrastructure.
