04 · How the Process Works
Gas enters absorber
VOC-laden process gas is fed into the absorption column at ambient or below-ambient temperature.
Genosorb absorbs VOCs
The liquid absorbent contacts the gas and dissolves the VOC out of it, driven by Genosorb's high affinity for the target compound(s).
Clean gas exits
Treated gas — now within emission-compliant VOC levels and incidentally dehydrated — is released or sent onward.
Rich solvent regenerated
The VOC-loaded absorbent is pumped to a stripper column and heated, driving the VOC back out of solution.
Solvent condensed
The now-concentrated VOC vapour leaving the stripper is easily condensed into recoverable liquid product.
Genosorb recycled
The lean, regenerated absorbent is cooled and returned to the absorber, with heat exchanged between rich and lean streams and pressure energy recovered via turbine pumps.
Fig. 1 — General flow sheet for Genosorb® VOC recovery system
Energy conservation
Dissolved VOC-rich absorbent is subsequently heated and VOC is stripped off. The stripped VOC stream is highly concentrated and can be easily condensed; the absorption and stripping columns operate at different temperatures or different pressures, sometimes both. Energy can be conserved by interchanging the heat between the forward rich stream and return depleted stream. Pressure energy can be recovered by turbine pumps.
04 · Engineering Design
Every Genosorb installation is engineered around six interlocking variables — not a one-size-fits-all skid.
Solvent selection
Matching the Genosorb grade or blend to the specific VOC mixture, since affinity varies by compound class.
Temperature
Absorber and stripper each run at temperatures chosen to maximise absorption on one side and clean regeneration on the other.
Pressure
Absorption and stripping can run at different pressures as well as temperatures — sometimes both — to optimise separation.
VOC concentration
Inlet concentration drives sizing decisions; very low concentrations at high volume call for a rotary-concentrator pre-stage.
Heat integration
Exchanging heat between the VOC-rich stream heading to the stripper and the lean stream returning cuts net energy purchased.
Energy recovery
Pressure energy between the two columns can be recovered with turbine pumps, further lowering operating cost.
NE Isometric · 3-D Plant Model
