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Carbon molecular sieve

Carbon molecular sieve utilizes its sieving properties to achieve the separation of oxygen and nitrogen. The main component is elemental carbon, with a black columnar solid appearance (diameter 1-2mm, height 2-5mm). Due to the presence of a large number of micropores (with a diameter of 4 angstroms) with strong instantaneous affinity for oxygen molecules, they are commonly used to separate oxygen and nitrogen from air, and then produce nitrogen through a pressure swing adsorption device.

    The working principle of molecular sieves mainly includes adsorption function and sieving function.

    Adsorption function: The adsorption of substances by molecular sieves comes from physical adsorption, and their crystal pores have strong polarity and Coulomb field, exhibiting strong adsorption ability for polar molecules (such as water) and unsaturated molecules. When a fluid flows through a molecular sieve, the molecules inside will move irregularly due to molecular gravity and collide with the surface of the molecular sieve, resulting in molecular concentration on a fixed surface and achieving separation.

    Screening function: The pore size distribution of molecular sieves is very uniform, and only substances with a molecular diameter smaller than the pore diameter can enter the crystal pores of the molecular sieve. This characteristic enables molecular sieves to distinguish and separate different substances based on their size and shape.

    Application and Features:

    High cost-effectiveness, high hardness, low ash content, long service life, uniform particles, and resistance to airflow impact.
    Stable quality: Strictly follow 100% production standards and factory inspection management for testing.
    It can meet the requirements of all types of PSA nitrogen systems. In industry, CMS can concentrate nitrogen gas from the air through PSA system, with a purity of up to 99.999%.
    Carbon molecular sieves are widely used in industries such as petroleum, chemical, coal mining, metal heat treatment, electronic manufacturing, and food preservation.
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    PSA nitrogen generator oxygen nitrogen separation process

    The principle of utilizing the difference in diffusion rates between oxygen and nitrogen in carbon molecular sieves is that oxygen molecules are adsorbed in large quantities by carbon molecular sieves, while nitrogen molecules are enriched in the gas phase to achieve oxygen nitrogen separation.
    The adsorption capacity of carbon molecular sieves for oxygen varies significantly with pressure. Lowering the pressure can desorb the adsorbed oxygen molecules in the carbon molecular sieve. Regenerate carbon molecular sieves to achieve repeated recycling of carbon molecular sieves.

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