Recently, our company once again collaborated with an existing customer to custom-design and manufacture a purification unit—the Air Purification System—for a high-purity nitrogen air separation plant. This system will ensure the supply of ultra-clean air, thoroughly removing both carbon dioxide and moisture, thereby meeting the stringent process-gas requirements for advanced lithium-battery material production.

In high-end lithium battery manufacturing, the precision of environmental control directly determines the battery's overall performance and safety level. Even trace amounts of carbon dioxide and moisture in the air can easily trigger issues such as electrolyte decomposition and electrode corrosion. Traditional dehumidification technologies, however, struggle to completely eliminate the chemical risks posed by carbon dioxide.

     This air purification system is designed based on a mature and reliable adsorption process, utilizing a highly efficient, carbon-dedicated adsorbent as its core material. The adsorbent features a uniform pore structure of 10 Angstroms, enabling it to effectively remove both moisture and carbon dioxide simultaneously. The system design carefully balances operational efficiency with energy consumption; by optimizing the adsorption structure and packing process, it ensures high adsorption efficiency even under heavy processing loads.

The air purification system employs a mid-temperature regeneration process, utilizing oxygen-enriched air as the regenerating medium. This technology effectively desorbs carbon dioxide and moisture from the adsorbent while preventing damage to the adsorbent's crystal structure caused by excessively high regeneration temperatures, thereby helping to extend the adsorbent's service life. Real-world operational data show that the system can stably maintain the CO₂ concentration in the outlet air below 1 ppm, with a dew point temperature lower than -70°C.