Carbon molecular sieve (CMS) is an important element in the process of PSA nitrogen generation. It is a new type of nonpolar adsorbent used for separating nitrogen by switching between pressurization and depressurization.
This principle is that different elements in the air have different diffusion rates in the pores of the CMS. As the CMS has a higher adsorption ability of oxygen molecules, nitrogen can be separated from the ambient air with the desorption-adsorption condition of PSA.
Carbon molecular sieve (CMS) is widely used in the chemical industry, oil & gas industry, electronic industry, food packaging industry, coal industry, pharmaceutical industry, cable industry, metal heat treatment, transportation and storage, etc.
20kg, 40kg, 137kg sealed plastic buckets.
Carbon molecular sieve (CMS) is prone to moisture so it should not be exposed to the air directly.
Technical Specifications
| Model | Adsorption Pressure | Nitrogen Purity (%) | Nitrogen Capacity (Nm³/h.t) | Air/Nitrogen Ratio (%) |
| CMS-220 | 0.75-0.8 | 95 | 420 | 2.0 |
| 96 | 380 | 2.1 | ||
| 97 | 340 | 2.2 | ||
| 98 | 300 | 2.3 | ||
| 99 | 260 | 2.4 | ||
| 99.5 | 220 | 2.6 | ||
| 99.9 | 145 | 3.7 | ||
| 99.99 | 100 | 4.8 | ||
| 99.999 | 55 | 6.8 | ||
| CMS-240 | 0.75-0.8 | 95 | 440 | 1.8 |
| 96 | 400 | 2.0 | ||
| 97 | 360 | 2.1 | ||
| 98 | 320 | 2.2 | ||
| 99 | 280 | 2.3 | ||
| 99.5 | 240 | 2.5 | ||
| 99.9 | 160 | 3.5 | ||
| 99.99 | 110 | 4.6 | ||
| 99.999 | 65 | 6.6 | ||
| CMS-260 | 0.75-0.8 | 95 | 470 | 1.7 |
| 96 | 430 | 1.9 | ||
| 97 | 390 | 2.0 | ||
| 98 | 350 | 2.1 | ||
| 99 | 320 | 2.2 | ||
| 99.5 | 260 | 2.4 | ||
| 99.9 | 175 | 3.4 | ||
| 99.99 | 120 | 4.6 | ||
| 99.999 | 75 | 6.5 | ||
| CMS-280 | 0.75-0.8 | 95 | 500 | 1.6 |
| 96 | 455 | 1.8 | ||
| 97 | 410 | 2.0 | ||
| 98 | 365 | 2.1 | ||
| 99 | 335 | 2.2 | ||
| 99.5 | 280 | 2.3 | ||
| 99.9 | 190 | 3.4 | ||
| 99.99 | 135 | 4.5 | ||
| 99.999 | 90 | 6.4 |
Packing：With plastic bag and plastic drum
Advanced Functional Role in Gas Separation Applications
The carbon molecular sieve serves as a critical adsorbent for industrial-scale PSA nitrogen generation, designed for use by process engineers and system integrators seeking high-performance gas separation solutions. Its selective adsorption mechanism targets oxygen molecules with high efficiency, facilitating nitrogen enrichment in gaseous streams. This material primarily addresses the needs of manufacturers developing nitrogen supply systems, as well as end-users in sectors that require on-demand nitrogen production with reliable purity levels. The carbon molecular sieves ensure system compatibility, enhancing automation control and simplifying integration into complex gas management frameworks.
Precise Engineering and Material Specifications
Manufactured as cylindrical black solids with diameters between 1.0 and 1.8 mm, the carbon molecular sieve exhibits a bulk density ranging from 630 to 680 g/L and a minimum compressive strength of 50 N. Its porous, nonpolar structure distinctly facilitates selective oxygen adsorption by modulating diffusion rates, optimizing the PSA cycle efficiency with an adjustable adsorption period typically around 2 × 50 seconds. Moisture sensitivity requires controlled storage environments, often sealed in 20 kg, 40 kg, or 137 kg plastic buckets. These stringent technical specifications allow for consistent cycle life performance, critical for maintaining nitrogen purity and operational reliability in demanding process conditions.
Industrial Integration and Procedural Value
The application of molecular sieve carbon in nitrogen generation systems spans multiple industrial sectors including chemical processing, pharmaceutical manufacturing, and electronics production. It supports the continuous generation of high-purity nitrogen atmospheres essential for inerting, blanketing, and process gas delivery. By enabling precise oxygen removal during PSA cycles, the carbon molecular sieve nitrogen generation approach enhances operational safety and process stability. Integration with modular PSA equipment and VPSA technologies further maximizes system throughput and energy efficiency. This makes it highly advantageous for facilities optimizing their gas utilities with minimized downtime and maintenance.
Product Advantages
Design and Structural Integrity for Sustained Operation
The carbon molecular sieve is engineered with a structurally robust porous matrix that balances adsorption efficiency and mechanical durability, suitable for repetitive compression cycles without degradation. Its modular particle size and bulk density specifications facilitate uniform bed packing and optimized flow distribution within PSA vessels. Lightweight yet strong, this molecular sieve carbon allows for efficient pneumatic handling and installation in varied system configurations. The packaging strategy—including sealed buckets—ensures controlled moisture ingress prevention, crucial for maintaining adsorbent consistency. Collectively, these features reduce operational variability and simplify replacement logistics in industrial nitrogen generation setups.
Operational Efficiency and End-User Value
Delivering consistently high nitrogen purity, the carbon molecular sieve enhances process control, enabling operators to maintain precise atmospheric conditions in critical manufacturing environments. Its stable adsorption-desorption cycling reduces energy consumption and minimizes fluctuations in output flow and quality. The adsorbent’s compatibility with standard PSA cycle times simplifies integration into existing nitrogen production infrastructures, streamlining commissioning and maintenance. This translates directly into cost savings, increased uptime, and reliable supply for users in sectors such as semiconductor fabrication, food packaging, and chemical inerting where process gas integrity is paramount.
Use Scenarios
Optimization in Chemical Manufacturing Plants
In chemical production environments, the carbon molecular sieve plays an essential role in on-site nitrogen generation, supporting inert atmospheres critical for preventing oxidation and controlling reactive processes. Its high oxygen selectivity within PSA systems ensures the delivery of nitrogen with purity levels compliant with stringent industry standards. The adsorbent enables continuous operation of nitrogen generation modules integrated into process control loops, reducing reliance on external gas supply chains and mitigating downtime risks. Its moisture-sensitive nature requires effective storage and handling protocols aligned with plant logistics, ensuring consistent performance aligned with regulatory safety practices.
Integration for Semiconductor and Electronics Fabrication
Within semiconductor manufacturing, controlled atmospheres purged with high-purity nitrogen are vital for preventing contamination during wafer processing and assembly. The carbon molecular sieve nitrogen generation supports these requirements by providing a reliable, on-demand nitrogen source through PSA technology. Its engineered diffusion properties ensure that oxygen levels remain exceptionally low, mitigating defect rates associated with trace gases. Integration with cleanroom gas delivery systems allows seamless incorporation into existing infrastructure, enhancing operational efficiency and compliance with stringent industry specifications. This facilitates improved product quality and reduced production variability in high-precision manufacturing scenarios.
Established in 2004, Exeter possesses 20 years of experience in producing air separation equipment, including PSA nitrogen/oxygen generators, gas purification equipment, and VPSA oxygen equipment. Our expertise ensures reliable, high-quality products designed for industrial gas generation needs.
As a trusted supplier, Exeter offers Carbon Molecular Sieve (CMS) products integral to PSA nitrogen generation systems, supporting diverse industrial applications with consistent performance. Contact us now for your custom quote!
What is the role of the Carbon Molecular Sieve in nitrogen generation?
The carbon molecular sieve is a high-performance adsorbent used in PSA nitrogen generation, selectively adsorbing oxygen from air while allowing nitrogen to pass, resulting in nitrogen-enriched output. Its porous structure and mechanical strength support multiple adsorption cycles, ensuring efficient and continuous nitrogen production.
Can Exeter customize gas generation systems using Carbon Molecular Sieves?
Yes, Exeter supports OEM customization, designing nitrogen generator systems to client specifications using carbon molecular sieves. Their engineering team can adapt equipment based on provided drawings or specific operational requirements, ensuring tailored solutions for industrial gas separation needs.
How should Carbon Molecular Sieve be stored to maintain performance?
Because carbon molecular sieve is moisture sensitive, it must be stored in sealed packaging to prevent degradation. Exeter provides CMS in sealed plastic buckets of 20 kg, 40 kg, or 137 kg, helping maintain adsorbent activity and prolonging service life before installation in PSA systems.
What delivery options and after-sales support does Exeter provide for CMS-based equipment?
Exeter offers production lead times between 30 and 60 days depending on system complexity, with FOB, CNF, and CIF shipping terms. They provide a 1-year quality warranty on equipment and reliable after-sales service to support maintenance and operational guidance for PSA nitrogen generators using carbon molecular sieve nitrogen generation technology.
Established in 2004, Exeter possesses 20-year experience in producing air separation equipment, including PSA nitrogen/oxygen generator, gas purification equipment, VPSA oxygen equipment, etc.
