In the Traditional Low-Temperature Air Separation, Moisture and Co2 in The Air Will Freeze and Precipitate at Low Temperatures, Blocking Equipment and Pipelines; Hydrocarbons (especially Acetylene) Accumulate in The Air Separation Unit and Will Cause an Explosion Under Certain Conditions. Therefore, Before the Raw Air Enters the Low-Temperature Separation Process, These Impurities Need to Be Removed Through an Air Purification System Filled with Molecular Sieves.

Adsorption Heat:

Air Separation Adsorbs Water, and Physical Adsorption Is Used to Absorb Water. the Latent Heat of Co2 Condensation Is Generated, so The Temperature Before and After the Adsorber Is Increased.


Because the Adsorbent Is Solid and Its Porous Adsorption Surface Is Limited, It Cannot Operate Continuously. when The Adsorption Capacity Is Saturated, Desorption Must Be Carried Out.

Filled Adsorbent:

Activated Alumina, Molecular Sieve, Inert Ceramic Ball

Inert Porcelain Ball: Bottom Layer of Bed, Used to Distribute Airflow. the Bed Surface Distribution Is Better in The Adsorber, Can Not Be Used.

Alumina: The Main Function Is to Absorb Water Initially,

Molecular Sieve: Deep Water Absorption and Carbon Dioxide Removal. It Is Very Important to Ensure the Co2 Adsorption Capacity of Molecular Sieve, Because Water and Co2 Are Co-Adsorbed in 13 X. if The Effect Is Not Good, Co2 Will Cause Ice Blockage of Equipment. Therefore, in Cryogenic Air Separation, the Co2 Adsorption Capacity of 13 X Is the Key Factor.


Air Purification System