NINGBO INNO PHARMCHEM CO.,LTD. is a supplier of critical materials used in advanced industrial processes, including cryogenic air separation. This complex process is fundamental to producing high-purity gases like oxygen, nitrogen, and argon by cooling and liquefying air. Molecular sieves play a vital role in the initial purification stages of this process.

Before air is cooled to cryogenic temperatures, it must be meticulously purified to remove components that could freeze, block equipment, or compromise the purity of the final products. The primary contaminants targeted for removal are water vapor and carbon dioxide. These substances, if not removed, can form ice crystals or solid CO2 at low temperatures, leading to blockages in heat exchangers and distillation columns, and potentially causing dangerous pressure buildup.

This is where molecular sieves, particularly the 13X type, are indispensable. With their large 10 Angstrom pore size and high affinity for polar molecules like water and carbon dioxide, 13X molecular sieves are highly effective in adsorbing these contaminants. They are typically used in adsorbent beds as part of the Air Pre-Purification Unit (APPU) of an air separation plant.

The process involves passing compressed ambient air through beds packed with molecular sieves. The sieves selectively trap the moisture and CO2 to extremely low levels, often down to parts per million (ppm). This ensures that the air entering the cryogenic section is free from these impurities, allowing for the efficient and safe separation of oxygen, nitrogen, and argon at very low temperatures. The use of specialized molecular sieves is a key factor in achieving the high purity required for industrial and medical gas applications.

The cryogenic air separation adsorbents, like the 13X sieves we supply, are engineered for high capacity, excellent regenerability, and robust physical properties to withstand the demanding conditions of the APPU. Their consistent performance is critical for the reliable operation of large-scale air separation units. At NINGBO INNO PHARMCHEM CO.,LTD., we provide high-quality molecular sieves that meet the stringent purity requirements of this sophisticated process, contributing to the production of essential industrial gases.