PSA, TSA and VTSA are the three main adsorption cycles used to purify gas. Each uses a bed of adsorbent that captures contaminants such as moisture, CO2 and H2S, then regenerates the bed so it can be used again.
PSA: Pressure Swing Adsorption
The bed adsorbs contaminants at high pressure. Dropping the pressure releases them, regenerating the bed. PSA cycles are fast, so the equipment can be compact. It suits contaminants that release easily when pressure falls.
TSA: Temperature Swing Adsorption
The bed adsorbs at a lower temperature and is regenerated by heating it. TSA cycles are slower but handle contaminants that are held strongly, such as water, and give very low outlet concentrations.
VTSA: Vacuum Temperature Swing Adsorption
VTSA combines heat with vacuum during regeneration. It helps release strongly held components more completely and at lower temperatures than heat alone.
What They Remove
- Moisture, for gas drying
- CO2, for natural gas, biogas and hydrogen purification
- H2S and other sulfur compounds
- Other trace contaminants, depending on the adsorbent
How to Choose
The choice depends on the contaminant, its concentration, the operating pressure and the outlet purity you need. A good design starts with a full gas analysis. Power Energy supplies gas treatment and purification systems in Saudi Arabia and the GCC. See also desiccant dryers explained.
Talk to Power Energy
Send us the gas, flow, pressure and required outlet specification. Call or WhatsApp +966 56 278 9535 or email sales@powerenergy.com.co.