1. Product Overview

Zhongci CMS-220 is a premium-grade carbon molecular sieve (CMS) engineered for Pressure Swing Adsorption (PSA) nitrogen generation systems. Composed primarily of carbon, it appears as a cylindrical black solid with meticulously engineered microporous structures. Its core function is the efficient separation of nitrogen (N₂) from compressed air, delivering nitrogen purity exceeding 99.99%. This makes it indispensable for industries requiring ultra-pure nitrogen.

2. Key Technical Specifications

• Physical Properties:
  • Structure: Uniform cylindrical pellets with optimized mechanical strength.
  • Pore Size: Precisely controlled 4 Ångström (Å) micropores, selectively adsorbing oxygen (O₂) and moisture while allowing nitrogen to pass through.
  • Density: High body density of 1.83–1.85 g/cm³, ensuring durability and stability under cyclic PSA operations.
• Performance Metrics:
  • Nitrogen Purity: ≥99.99%.
  • Adsorption Capacity: High nitrogen yield per unit volume, reducing operational costs.
  • Thermal Stability: Resistant to high temperatures, suitable for demanding industrial environments. 

3. Working Principle

CMS-220 leverages kinetic separation:

1. Adsorption Phase: Compressed air enters the PSA tower. Oxygen molecules (smaller kinetic diameter: ~3.46 Å) diffuse into the 4 Å pores faster than nitrogen (~3.64 Å), becoming trapped.
2. Desorption Phase: Pressure reduction releases adsorbed O₂, regenerating the sieve.
3. Output: Enriched nitrogen gas (>99.99% purity) exits the system.

4. Industrial Applications

CMS-220 is critical in sectors requiring inert atmospheres:

• Petrochemicals: Prevents oxidation during storage and processing.
• Metal Heat Treatment: Eliminates surface oxidation in annealing/furnace processes.  

• Electronics: Protects sensitive components during manufacturing.
• Food Preservation: Extends shelf life by displacing oxygen in packaging (modified atmosphere packaging).

5. Packaging & Supply

• Standard Packaging: 40 kg sealed plastic drums.
• Production Capacity: Up to 1,000 tons per month, ensuring reliable supply.
• Certifications: Complies with industrial standards for adsorbents and coating auxiliaries.

6. Advantages Over Alternatives

• Cost Efficiency: High N₂ yield reduces energy consumption per unit of gas produced.
• Longevity: Robust structure minimizes attrition loss during pressure cycling.

• Low Maintenance: Consistent performance with minimal regeneration downtime.

7. Supplier Information

Manufactured by Pingxiang Zhongci Environmental Ceramics Material Co., Ltd. (Jiangxi, China), a specialized producer of molecular sieves and ceramic materials