HANGZHOU NUZHUO TECHNOLOGY GROUP CO.,LTD.

In today’s industrial production and technological applications, high-purity nitrogen has become an indispensable basic gas for many industries. As a professional industrial gas solutions provider, Nuzhuo Group, with years of technical accumulation and industry insights, now provides a comprehensive explanation of the basic configuration, working principle, and wide application of PSA (Pressure Swing Adsorption) nitrogen generators, helping you to deeply understand this efficient and economical nitrogen production technology. I. Brief Description of the Working Principle of PSA Nitrogen Generators

PSA technology is based on the difference in gas adsorption capacity of carbon molecular sieves (CMS) under different pressures. The main components of air are nitrogen (approximately 78%) and oxygen (approximately 21%). Under pressurized conditions, the carbon molecular sieve preferentially adsorbs oxygen, while nitrogen is enriched and passes through; under depressurized conditions, the adsorbed oxygen is desorbed and discharged, and the molecular sieve is regenerated. Continuous nitrogen production is achieved through the alternating operation of two towers.

II. Detailed Explanation of Basic Configuration of PSA Nitrogen Generator

Nuzhuo Group points out that a complete PSA nitrogen generator system typically includes the following core modules:

1. Air Compression and Purification Unit

1.1 Air Compressor: Provides a clean and stable source of compressed air, serving as the power foundation of the system.

1.2 Air Receiver: Buffers pressure fluctuations, ensuring stable airflow.

1.3 Refrigerated Dryer: Removes moisture from the air, preventing icing and pipeline corrosion.

1.4 Precision Filter: Multi-stage filtration (typically including C, T, and A stages), removes oil, dust, and residual moisture, protecting the subsequent adsorbent.

2. Pressure Swing Adsorption Separation Unit (Core)

2.1 Adsorption Tower (A/B Dual Tower): Filled with high-quality carbon molecular sieves, it alternately performs adsorption and desorption through program control.

2.2 Pneumatic Valve Assembly: High-quality valves ensure rapid and precise switching, guaranteeing continuous system operation and stability.

2.3 Silencer: Reduces noise during desorption exhaust.

3. Nitrogen Buffer and Purification Unit

3.1 Nitrogen Buffer Tank: Balances gas production pressure and flow fluctuations to ensure stable output.

3.2 Dust Filter: Captures trace amounts of molecular sieve dust that may be carried away by the gas flow.

3.3 (Optional) Nitrogen Purification Unit: For ultra-high purity of 99.999% or higher, deoxygenation, deep drying, and other post-processing equipment can be added.

4. Intelligent Control System

4.1 PLC/Touch Screen: Fully automatic control, real-time monitoring of key parameters such as pressure, flow, and purity, with fault diagnosis, alarm, and historical data recording functions.

4.2 Online Analyzer: Continuously monitors nitrogen purity (usually measuring oxygen content) to ensure stable and compliant product gas quality.

III. Core Advantages of PSA Nitrogen Generator

Nuzhuo Group summarizes its outstanding advantages compared to traditional liquid nitrogen supply or membrane separation technology:

1. Low-cost operation: Using air as raw material and electricity as the main consumption, it offers significant long-term economic benefits.

2. On-site production and use: Nitrogen is generated on-site, eliminating the need for storage and transportation, ensuring a safe and convenient supply.

3. High and adjustable purity: By adjusting the flow rate and pressure, nitrogen gas with purities ranging from 95% to 99.999% can be obtained.

4. High degree of automation: One-button start/stop, intelligent operation, and simple maintenance.

5. Safe and environmentally friendly: Free of harmful chemicals, low-pressure operation, safe and reliable.

IV. Application Areas Overview

Thanks to its flexibility and reliability, PSA nitrogen generators have penetrated key sectors of the national economy:

1. Chemical and Oil & Gas Industries

Applications: Material protection, pipeline and container purging, nitrogen injection for oil and gas field recovery, and covering gas for chemical transportation.

Requirements: Explosion-proof design, continuous and stable operation.

2. Electronics and Semiconductors

Applications: Semiconductor component production, SMT soldering, and electronic packaging protection.

Requirements: Ultra-high purity (often above 99.999%), extremely low dew point.

3. Food and Pharmaceutical

Applications: Nitrogen-filled packaging for food (potato chips, milk powder, etc.), modified atmosphere packaging for fruits and vegetables, beer and beverage bottling, and protective measures in pharmaceutical production.

Requirements: Meets hygiene standards, oil-free and sterile, with stable purity.

4. Metal Heat Treatment

Applications: Bright annealing, brazing, sintering protection, preventing high-temperature oxidation of metals.

Requirements: High purity (typically above 99.99%), high flow rate.

5. Power and Energy Storage

Applications: Transformer protection, nitrogen-filled cables, lithium battery production.

Requirements: Continuously stable, high dryness.

6. Other Fields

Tire Nitrogen Filling: Improves driving safety and reduces tire pressure fluctuations.

Plastic Injection Molding: Prevents oxidation and improves product quality.

Aerospace and Marine: Protection of military supplies, explosion-proofing for ships.

V. Added Value of Nuzhuo Group

Nuzhuo Group not only provides standardized PSA nitrogen generators, but also focuses on providing customized solutions:

1. Demand Analysis: Tailor-made models based on customers’ specific gas consumption, purity, and pressure requirements.

2. Energy-Saving Design: Optimized processes to reduce energy consumption and operating costs.

3. Comprehensive Service: Full lifecycle support from installation and commissioning, operation training to regular maintenance and consumable supply.

4. Remote Monitoring: Optional IoT module for remote operation and maintenance and early warning.

Conclusion: Grasping the Trend of On-Site Nitrogen Generation, Empowering Industrial Upgrading

With the continuous improvement of industrial automation and precision, the demand for efficient, economical, and autonomous gas supply is increasing. PSA nitrogen generation technology, with its mature reliability and strong adaptability, is becoming the first choice for more and more enterprises.

As your trusted partner, Nuzhuo Group will continue to focus on technological innovation and service optimization to help customers in various industries achieve cost reduction and efficiency improvement, safe and controllable, and green and sustainable nitrogen supply, jointly promoting high-quality industrial development.

For any oxygen/nitrogen/argon needs, please reach out to us ：

Emma Lv  

Tel./Whatsapp/Wechat：+86-15268513609

Email：Emma.Lv@fankeintra.com

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