Technical article

Molecular sieve 13X APG in the cryogenic air separation


Molecular Sieve 13X APG is a specific type of molecular sieve belonging to the 13X family. It is a synthetic zeolite with a three-dimensional network of pores, which gives it its adsorbent properties. The "13X" designation refers to the pore size, which is approximately 10 Å (angstroms).
The "APG" in the name stands for "Activated Powder Grade." It indicates the form of the molecular sieve, which is a fine powder. The activation process involves removing any impurities or residual moisture from the material to enhance its adsorption capacity and efficiency.
Molecular Sieve 13X APG is widely used in various industries for applications such as adsorption, separation, purification, and drying of gases and liquids. Its main characteristic is high adsorption capacity for polar molecules, such as water vapor, carbon dioxide, and sulfur compounds.
Due to its ability to selectively adsorb and differentiate between molecules based on size and polarity, Molecular Sieve 13X APG is particularly useful in gas drying processes, including air separation, natural gas drying, and removal of contaminants from compressed air or other gases.
Below we’ll talk about the specific application: Cryogenic Air Separation Industry.
In the cryogenic air separation industry, Molecular Sieve 13X APG is commonly used as a desiccant or adsorbent material. It plays a crucial role in the purification and drying of air before it undergoes the cryogenic separation process.
Molecular Sieve 13X APG is a synthetic zeolite with a high surface area and uniform pore structure. It has the capability to selectively adsorb molecules based on their size and polarity. In the cryogenic air separation industry, its main purpose is to remove water vapor and other impurities from the air stream.
During the air separation process, ambient air is compressed and cooled, leading to the condensation of moisture. Molecular Sieve 13X APG is employed to absorb and trap the water molecules, preventing their entry into the subsequent cryogenic distillation units.
By reducing the moisture content, the Molecular Sieve helps maintain the efficiency and integrity of the cryogenic process, as excessive water can cause freezing and blockage issues. This adsorbent material contributes to the production of high-purity oxygen, nitrogen, and other gases used in a wide range of industrial applications.

OIM Chemical have 2 types of 13X APG: One is Molecular sieve 13X APG and another is Molecular sieve 13X APG III. To know more, just email us to further talk.

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Tracy Chen
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