5P Engineering - Crio & Eng

C.E.O. Aldo SalmoiraghiOur C.E.O. Mr. Aldo Salmoiraghi is at your disposal for any question you can have.

Please contact him at address: a.salmoiraghi@5pengineering.it

Logo C&EPSA - Pressure Swing Adsorption


CRIO&ENG has developed a oxygen supply on site PSA plants which as proven to be very efficient, as regards power consumption.

PSA plants use molecular-sieves as absorbents to remove nitrogen, carbon dioxide and water.

A drying agent layer is added to the adsorption vessels to increase performance.

When the molecular sieves achieve the saturation, the molecules will be desorpted using pressure drop and the absorbents are then ready to be re-used.

Our PSA plants is particularly suitable for low oxygen production the benefit of the plant can be condensed as follows:

  • Simple design ensures high reliability and low maintenance;
  • Low investments costs;
  • Compact configuration that minimizes space requirements;
  • Fully automatic running without an operator.The plant can be connected to the Headquarters control room and controlled by a single telephone line.

The PSA plants can be integrated with a liquid oxygen backup storage system which ensures continuous supply during failure or maintenance of the plant.

When oxygen at higher pressure (more that 2 bar) is required, the plant will be equipped with a compressor and a high pressure gas buffer.

Therefore, it is possible to modify the flow rate of the consumption without carrying out modification to the PSA system.

CRIO&ENG will be at your full disposal to study your requirements, design the tailored solution and thereafter submit a tender.

We also realize turn-key installation, start-up, operation and maintenance of VSA plants. The main specification of the VSA plants are:

Production purity

O2 %

90 - 93

Argon %

4,5- 5

Water ppm


Nominal Capacity of plant


O2 100%

Click here for process flow diagram