Dear Shaima,

 Hydrogen PSA units are designed for the recovery and the purification of hydrogen from different hydrogen rich gases as synthesis gas coming from steam reforming, methanol reforming or from various off-gases.

For this task the principle of pressure-swing adsorption (PSA-technology) is applied.

Purities of up to 99,9999 vol.-% hydrogen product quality can be achieved at optimum recovery rates.

The pressure swing adsorption (PSA) technology applies the principle of physically binding the impurities contained in the hydrogen rich gases by individually selected adsorbent materials. Since the binding forces for such impurities depend on the pressure, the PSA operates on an alternating cycle of adsorption at elevated pressures and desorption at decreased pressures.

Regards,

Prem Baboo