Process Technologies

Modular PSA Recovery

Building on a track record of over 100 Pressure Swing Adsorption (PSA) units since 1969, Lummus Technology is your full-range supplier of adsorption-based gas separation plants for hydrogen, helium and other high-value gases.

Lummus Technology is the only hydrogen PSA supplier capable of self-performing all phases of a project—from separation technology to complete engineering, shop fabrication, field commissioning and after-sales support. Our world-leading capabilities allow us to deliver projects faster than any other PSA supplier, with exceptional quality and the benefits of a single point of responsibility.

Lummus Technology-designed and built PSA units deliver hydrogen purity to customer specifications, from 99.5% H2 for refinery applications up to and including 99.9999%+ H2 applications for critical service in petrochemical and semiconductor applications.

  • Small footprint and small stored flammable gas volume
  • Reliable, redundant, fault-tolerant operation
  • Uniquely suited to stable performance with large daily temperature variations 

Lummus Technology's continuous improvement philosophy is backed by our ongoing program of adsorbent characterization, separation design and validation. Our emphasis is on combining our state-of-the-art adsorbent and cycle technologies with the highest quality of componentry and fabrication to deliver a product of lasting value. Lummus Technology's cyclic adsorption plants are engineered using the best adsorbent technologies from leaders in the fields of zeolites, activated carbons, silica gels and aluminas—delivering specifically-tailored, optimum solutions to each customer's specifications.

Modular PSA Recovery Plants

Lummus Technology’s long-standing capabilities in modular fabrication and hydrogen purification uniquely prepare us to offer turnkey gas recovery plants, even at small flow rates.


Many older PSA plants can be revamped with new automation systems to increase their performance and reliability. With our substantial in-house automation engineering team, Lummus Technology can design, install and commission a new control system for your existing PSA plant.

Replacement Adsorbents

Lummus Technology works with the same adsorbent manufacturers that produce the top quality materials for our new units to supply replacement adsorbent systems.

PSA Adsorber Vessels

Adsorber vessels designed and built by Lummus Technology are highly engineered, precision-crafted products that work with our adsorbent and cycle technology to yield a high-performance, durable system.

Services & Training

Lummus Technology offers a full scope of field support and training for new PSA plants and existing clients.