PSA System

A PSA system separates certain gases from a mixture under pressure using adsorption on a solid material (adsorbent). Different gases are adsorbed at different rates under high pressure, allowing selective separation.
The cycle swings between high pressure (adsorption) & low pressure (desorption), hence the term “Pressure Swing.”

APPLICATIONS

Nitrogen generation from air
Hydrogen purification in refineries & ammonia plants
Biogas upgrading for removing CO₂ and impurities
Drying of gases (removing moisture)
On-site PSA systems supply hospitals with 95–99% pure O₂

MAJOR ELEMENTS

Adsorption Beds – Pressurized vessels packed with selective absorbents.
Adsorbents – Zeolites, carbon molecular sieves, activated adsorbents.
Valve & Piping Skid – Manages phase control and gas routing.
Control System – Orchestrates cycle timing, automation, and safety.
Tail Gas Systems – Stabilizes and handles purge exhaust.

TECHNICAL PARAMETERS

Parameter	Typical Values / Notes
Cycle Time	2–10 minutes (standard PSA)
Adsorption Duration	~7.9 s; Equalization ~0.9 s; Flow ~2.3 L/min yields ~96.7% O₂ purity
Purity (N₂)	95% – 99.999% (depending on adsorbent design)

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