Pressure Swing Adsorption (PSA)

Best-in-class hydrogen purification

When deployed for hydrogen production, Air Liquide PSA offers a best-in-class solution for purifying hydrogen-containing gases. Our technology utilizes the most advanced adsorbents and patented high-efficiency cycles to handle varying feed compositions, ensuring a consistent, ultra-pure hydrogen output.

Compatible hydrogen-rich feedstocks include:

• Raw hydrogen from SMR, ATR, POX and Gasification.
• Off-gases from Ethylene, Styrene, and Ammonia plants.
• Methanol plant purge gases and CCR off-gases.
• Cryogenic purification off-gases.

Bulk CO₂ removal for carbon capture

When applied as an environmental technology, the PSA process performs a bulk removal of CO₂ directly from flue gases or process streams.

This specific configuration serves as a main building block for our Cryocap™ FG and Cryocap™ Steel products. By efficiently pre-concentrating the CO₂ upstream of the cryogenic separation stage, the PSA enables heavy industries to significantly reduce the size, footprint, and operating costs of their final carbon capture infrastructure.

High efficiency and automatic operation

Regardless of the application, our PSA units are designed to balance capital investment with long-term operational efficiency. The units are compact, fully skid-mounted, and pre-tested to allow for easy outdoor installation.

The process is designed for unmanned, fully automatic operation, ensuring industry-leading reliability with on-stream factors typically exceeding 99.9%. Furthermore, the system offers high flexibility with a turndown capability as low as 20-25%.