SOLVENT RECOVERY

ADSORPTION WITH ACTIVATED CARBON

STEAM REGENERATION

The most common process for the regeneration of activated carbon uses direct steam.

The solvent recovery unit is formed by two or more activated carbon adsorbers, that alternate an adsorption phase with a regeneration one. The Solvent Laden Air (S.L.A.), once it has been treated (filtrated and conditioned), passes through the activated carbon bed of the adsorber that is in the adsorption phase: the carbon adsorbs the solvent and the air comes out cleansed. In the next phase a low-pressure steam flow, transferring heat to the activated carbon bed, desorbs the solvent. After it has been condensed, the solvent is sent to a static separator or distillation system to divide the water phase from the organic one. This process is ideal for non water miscible solvents or for solvents which do not form azeotropic mixtures with water: in this case we have to apply the inert gas (nitrogen) regeneration process (DEC.RSG™, DEC.RSX™, etc.).

activated carbon solvent recovery plant, steam regeneration (DEC.RSV™)

rotogravure printing industry (toluene), flow > 1.000.000 Nm³/h

MAIN APPLICATION FIELDS:

• flexible packaging industries;
• rotogravure industries;
• adhesive tapes industries;
• chemical and pharmaceutical industries;
• electronic industries;
• tobacco industries;
• paper mill industries;
• groundwater treatment;
• rubber, bitumen covering, paper plasticization, degreasing industries.