PSA Hydrogen Purification

Hydrogen is produced through a variety of industrial processes, including steam methane reforming, refinery operations, petrochemical processing, and as a by-product of chemical manufacturing. These hydrogen-rich gas streams typically contain impurities such as carbon monoxide (CO), carbon dioxide (CO₂), nitrogen (N₂), moisture, and residual hydrocarbons that must be removed before the hydrogen can be used or further processed.

Pressure Swing Adsorption (PSA) is one of the most widely used technologies for hydrogen purification. The process takes advantage of hydrogen’s low polarity and limited affinity for adsorbent materials, allowing contaminants to be selectively adsorbed while hydrogen passes through the system.

How Hydrogen PSA Works

A hydrogen PSA system consists of multiple adsorbent vessels operating in a coordinated cycle to provide continuous production of high-purity hydrogen. During the adsorption phase, impurities are captured by specialized adsorbents while hydrogen flows through the system. Once the adsorbent reaches its loading capacity, the vessel is regenerated by reducing pressure and removing the adsorbed contaminants. The vessel is then repressurized and returned to service while other beds continue the purification process.

This cyclic operation enables reliable production of hydrogen with purities exceeding 99.9%, depending on process requirements and feed gas composition.

Zeochem Adsorbent Solutions for Hydrogen PSA

Hydrogen PSA performance depends heavily on selecting the right adsorbents for the contaminants present in the feed stream. Zeochem offers a portfolio of molecular sieves and activated alumina designed for the selective removal of impurities in hydrogen purification applications.

Our solutions support the removal of:

• Moisture (H₂O)
• Carbon dioxide (CO₂)
• Carbon monoxide (CO)
• Nitrogen (N₂)
• Hydrocarbons and other trace contaminants

Zeochem works with PSA licensors, engineering firms, and plant operators to support adsorbent selection for hydrogen purification applications.

Why Zeochem?

Zeochem has decades of experience supplying adsorbent materials for gas purification applications worldwide. Our hydrogen PSA offering includes:

• Molecular sieves and activated alumina for hydrogen PSA systems
• Guidance on adsorbent selection based on application requirements
• Adsorbent solutions for new hydrogen PSA installations
• Adsorbent solutions for existing hydrogen PSA units and revamps

For new or existing hydrogen PSA systems, Zeochem can help identify suitable adsorbent materials based on the application and purification requirements.

Hydrogen PSA Engineering Support in the Americas

For hydrogen PSA projects in the Americas that require engineering support beyond adsorbent selection, Zeochem can refer customers to Headwaters Solutions LLC. Headwaters provides expertise in PSA unit design, fabrication, controls, and revamp services.

To learn more about hydrogen PSA system design and revamp services in the Americas, visit Headwater Solutions.