In particular this system offers the advantage to recover directly a mixture of solvents with an extremely low water content (without the need to install a complex dehydration system or a distillation system). We must consider that water comes from the partial adsorption of humidity in the flow to be treated. Systems for correction of relative humidity (DEC.RHC™) could be implemented for particular process conditions.

For further reduction of water content, DEC IMPIANTI has developed and applied several dehydration processes, before condensation (in gaseous phase) or after condensation (in liquid phase). The biggest advantage of a dehydration in gaseous phase (DEC.MSU™, DEC.RSX™) is to reduce the energy consumption so to condense an anhydrous solvent (and so not condensing / freezing water): this process gives energetic advantages and eliminates the problem to obtain a water phase (contaminated by solvents) to be treated before discharge.

Other big advantages of this technology are:

• TOTAL ABSENCE of contaminated process water discharge.
• LOW ENERGY consumption.
• REDUCED ACTIVATED CARBON ACTIVITY LOSS.
• HYDROLYSIS REACTIONS of solvents are nearly absent.
• SOLVENT OXIDATION REACTIONS are virtually absent due to the inert atmosphere even during the cooling phase of the regeneration bed.
• EXTREME HIGH LEVEL OF PROTECTION from the risk of ignition even with high concentrations of ketones.