Fixed bed adsorber

The fixed bed adsorber for the concentration of hydrocarbons usually consists of 2 vessels.

The process itself consists of 3 steps: Adsorption, desorption and cooling.

The raw gas with a low concentration of pollutants is passed through one of the two fixed beds, while in the second vessel a lower volume flow at high temperature drives the pollutants out of the zeolite again. After desorption, the zeolite must first be cooled before it can be fed with raw gas again.