Discover our main brands websites

Arkema worldwide

top
  • Product range

Siliporite® Airsiev P Series for Air Separation Units

Product overview

Molecular sieves for industrial gases solutions.

Geographic availability
  • Africa
  • Asia Pacific
  • Europe
  • Latin America and the Caribbean
  • Middle East
  • Northern America
  • Oceania

Related products

Airsiev® Ox series
  • Product

The Airsiev® Ox series is a range of molecular sieves designed for oxygen production by PSA (Pressure swing adsorption) process ...

Airsiev® P series
  • Product

The Airsiev® P series is a range of molecular sieves designed for air prepurification with four different performance ranges, for 140 ...

Siliporite® NK 10 B
  • Product

Siliporite® NK 10 B are robust molecular sieves designed for maximum moisture adsorption in air prior to compression. They will ...

Siliporite® PHYG series
  • Product

The Siliporite® PHYG series is a range of molecular sieves designed for hydrogen purification by PSA (Pressure swing adsorption) ...

Air prepurification for cryogenic distillation

With cryogenic distillation, gases are separated at extremely low temperature. In a modern Air Separation Unit (ASU), the first step is to remove water, carbon dioxide, nitrogen oxide and traces of hydrocarbons using an adsorption process, based on molecular sieves such as Airsiev® products and in some cases activated alumina.

Downstream, the air is processed in a cryogenic distillation column in order to produce highly pure nitrogen (N2), oxygen (O2) and argon (Ar). Purity levels can reach: O2>99.95% and N2>99.999 %. The molecular sieves unit is a very critical step of the process and has to be well designed in order to optimize the fit with the cryogenic section.