Industrial Nitrogen Plant for High-Purity Nitrogen Generation

◆◆ Core Technology: Cryogenic Air Separation ◆◆

The process involves cooling atmospheric air to cryogenic temperatures (below -196°C) to liquefy it, followed by fractional distillation to separate nitrogen from oxygen, argon, and other trace gases. Key steps include:

• Air Compression: Ambient air is filtered and compressed (5–10 bar).

• Pre-Cooling & Purification: Compressed air is cooled and scrubbed to remove moisture, CO₂, and hydrocarbons.

• Liquefaction: The air enters a cryogenic distillation column and is cooled to liquid state using heat exchangers and expansion turbines.

• Fractional Distillation: Liquid air is separated into nitrogen (lower boiling point: -196°C) and oxygen (higher boiling point: -183°C) via distillation trays. Nitrogen vapor rises and is collected, while oxygen-rich liquid settles at the bottom.

◆◆ Key Components ◆◆

• Air Compressor: Pressurizes incoming air.

• Molecular Sieves/Adsorbers: Remove CO₂, moisture, and impurities.

• Heat Exchangers: Cool air to cryogenic temperatures using reverse-flow heat exchange.

• Cryogenic Distillation Column: Vertical tower with trays for liquid-vapor separation.

• Expansion Turbine: Rapidly expands compressed air to generate extreme cooling.

• Liquid Nitrogen Storage Tanks: Store cryogenic nitrogen for vaporization or transport.

◆◆ Applications ◆◆

Cryogenic nitrogen plants are used in industries demanding ultra-high purity and bulk supply:

• Semiconductor Manufacturing: Creates inert atmospheres for chip fabrication.

• Aerospace: Pressurizes fuel tanks and tests components in oxygen-free environments.

• Pharmaceuticals: Freeze-drying and inerting during drug synthesis.

• Energy Sector: Inerting LNG storage tanks and pipelines.

• Chemical Processing: Prevents oxidation in high-purity chemical reactions.

◆◆ Advantages ◆◆

• Ultra-High Purity: Achieves 99.9999%+ purity by removing trace oxygen and argon.

• Large-Scale Production: Efficient for high-volume demands (e.g., thousands of Nm³/hour).

• Multi-Product Output: Can co-produce liquid nitrogen, oxygen, and argon.

• Long-Term Cost Efficiency: Lower operational costs per unit for bulk users.

◆◆ Limitations ◆◆

• High Capital Cost: Requires significant upfront investment.

• Energy Intensity: Consumes substantial electricity for compression and cooling.

• Complex Maintenance: Specialized expertise needed for cryogenic systems.

• Slow Startup: Takes hours to reach optimal operating temperatures.

◆◆ Comparison with PSA/Membrane Systems ◆◆

Summary: A cryogenic nitrogen plant is the gold standard for industries requiring ultra-pure nitrogen in bulk. While costly and complex, its unmatched purity and scalability make it indispensable for sectors like electronics, aerospace, and energy.

◆◆ RFQ ◆◆

1. Are you the manufacturer of this equipment？

Yes, we are an experienced manufacturer specializing in this field for 25 years.

2. Can the system be customized to meet specific requirements？

We provide custom-engineered solutions for different applications.

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.

4. What after-sales services do you provide?

We offer comprehensive after-sales support including:

✔ Technical Consultation - 24/7 expert guidance

✔ Remote Monitoring - Real-time system performance tracking

✔ Maintenance Packages - Scheduled inspections & consumable replacements

✔ On-site Service -Engineer oversea service available

✔ Spare Parts Supply - Original components with 18-month warranty

✔ Operator Training - Customized programs for client's technical team

5. 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.

We welcome you to reach out to our technical specialists for detailed consultations and customized solutions.