NINGBO INNO PHARMCHEM CO.,LTD. specializes in providing advanced chemical materials that are vital for complex industrial processes. Among these, molecular sieves play a crucial role, particularly in the field of cryogenic air separation. The 13X molecular sieve is a cornerstone of this technology, ensuring the high purity of gases like oxygen, nitrogen, and argon.

Cryogenic air separation units (ASUs) operate by cooling atmospheric air to extremely low temperatures, causing it to liquefy. This liquid air is then separated into its constituent gases based on their boiling points through fractional distillation. However, before air can reach these cryogenic temperatures, it must be meticulously purified. The primary contaminants in atmospheric air that pose a significant challenge are water vapor and carbon dioxide. At cryogenic temperatures, these substances freeze, forming ice or solid CO2 that can rapidly block heat exchangers and distillation columns, leading to process inefficiencies and costly shutdowns.

This is precisely where the 13X molecular sieve, also known as Zeolite 13X, proves its indispensable value. With a pore size of approximately 10 Angstroms, it is ideally suited for adsorbing molecules like water and carbon dioxide. In a pre-purification unit (PPU) that precedes the cryogenic distillation section, beds of 13X molecular sieve are employed. As the compressed air passes through these beds, the water vapor and carbon dioxide molecules are selectively captured within the sieve's pores.

The effectiveness of the 13X molecular sieve in this application is attributed to several factors:

  • High Adsorption Capacity for CO2 and H2O: It efficiently removes these contaminants to very low levels, preventing freezing issues.
  • Uniform Pore Size: The consistent 10Å pore opening ensures selective adsorption, allowing other desired gases to pass through.
  • Low Regeneration Temperature: The sieve can be effectively regenerated at moderate temperatures, saving energy and operational costs.
  • Long Service Life: Its robust structure withstands repeated adsorption-desorption cycles, providing sustained performance.

By utilizing the 13X molecular sieve, air separation plants can achieve remarkable purity levels for their output gases. The removal of CO2 and H2O is so effective that it allows for optimal performance of the cryogenic heat exchangers and distillation columns, leading to higher yields and greater energy efficiency. The sieve's ability to adsorb both CO2 and water simultaneously is a significant advantage, simplifying the purification process.

NINGBO INNO PHARMCHEM CO.,LTD. provides high-quality 13X molecular sieves that are manufactured to stringent specifications, ensuring reliability and superior performance in cryogenic air separation. Our commitment to quality and technical expertise makes us a trusted partner for industries reliant on high-purity gases. By understanding and leveraging the capabilities of materials like the 13X molecular sieve, we help our clients optimize their operations and achieve their production goals.