What is Carbon Molecular Sieve (CMS)?

Carbon Molecular Sieve (CMS) is a high porosity, production engineered carbon, which is used to separate gases according to size. CMS is a key component in nitrogen production systems particularly Pressure Swing Adsorption (PSA nitrogen generators), where by high purity and efficiency are central requirements.

---

The operation of CMS in PSA Nitrogen Generators

Nitrogen constitutes around 78 percent of air and oxygen 21 percent along with traces of gases. A PSA nitrogen generator works by selectively adsorbing oxygen molecules out of compressed air to be able to pass on nitrogen as the product gas .

• Selective Adsorption: CMS particles possess small and uniform pore sizes and smaller oxygen molecules are absorbed on them even as nitrogen molecules with larger size can easily flow through them.
• Pressure Swing Cycle: The Pressure Swing Cycle is used when the CMS is filled with oxygen where the oxygen is then desorbed by reducing the pressure so that the sieve can be regenerated. Then the cycle keeps on occurring and this provides a steady flow of nitrogen.

Important Advantages of CMS in Nitrogen Generators

• High Nitrogen Purity: CMS can allow nitrogen purities of up to 99.999% depending upon the use. Efficient Separation issetc3 ill Č groom hyeperroduction and desorption cycles render CMS-based PSA systems energy-efficient.

• Long Life Cycle: Disadvantages Low grade fuel causes parts to wear out in a short period.

• Low maintenance: The PSA generators using CMS are economical and do not need a lot of maintainance unlike cryogenic systems.

Nitrogen Generators using CMS uses

Due to CMS technology, some of the extensive areas where the nitrogen generators are applied in industries include:

• Electronics & Semiconductors- used in an inert atmosphere and soldering
• Food Packaging – Food Packaging- modified atmosphere packaging (MAP)
• Pharmaceuticals- to support dry/ sterile processed environment
• Chemicals- to blanket and purge
• Metal Processing – to have heat and laser cuts

Selecting the Appropriate CMS to Your System All CMS materials are not the same. CMS In PSA Nitrogen generators, CMS is used at an optimized pore size, surface area, and mechanical strength to provide high-performance generators. At Berg Kompressoren GmbH we dot every I with premium level of CMS in our system to obtain maximum reliability and purity of gas. Conclusion The heart of PSA generation technology of nitrogen is carbon molecular sieve adsorbent (CMS).

Our selection of molecular sieves and carbon molecular sieves (CMS) covers all standard applications, offering specific advantages for various industrial needs.

Molecular Sieve 3A, 4A, and 5A: Differences and Applications

• Molecular Sieve 3A: Best suited for selective water removal, especially in alcohols or applications where only water needs to be removed.
• Molecular Sieve 4A: Suitable for general water removal in gases and liquids, with some versatility in adsorbing small molecules like CO₂.
• Molecular Sieve 5A: Generally less ideal for pure water removal as it’s designed to adsorb both water and larger molecules such as hydrocarbons.

The property of selectively removing oxygen in compressed air allows the on-site generation of highly pure nitrogen, which assists in the enterprises saving the money, boosting efficiency, and sustaining quality. When you think of a nitrogen generator in your facility, it is important to realize that CMS plays a pivotal role in the technology and this is a factor that can guide a wise investment.