solvent recovery systems, nitrogen regeneration

activated carbon adsorption, inert gas desorption

DEC.RSX™ 10th Generation (MY 2021) - best in class

DEC IMPIANTI is offering several decades of experience in design and installation of the most technically advanced and efficient vapor phase solvent recovery systems.

DEC IMPIANTI has developed, in 1980's, its own totally innovative and exclusive technology which has been proven in hundreds of industrial applications (dealing with mono solvent or multi solvent systems), treating variable volumes of gaseous effluent (5.000 ÷ 1.000.000 Nm³/h), which utilizes an inert gas (nitrogen, N2) for the regeneration of the adsorption media (activated carbon), with direct recovery of anhydrous solvents, without any process water discharge.

For lower SLA flowrates (<5.000 Nm³/h) please check the cryocondensation process (DEC.CRY™) or the vacuum regeneration process (DEC.VRU™).

solvent recovery, activated carbon, flexible packaging, rotogravure, roto, lamination, coating, flexo, flexography, ethyl acetate, alcohol, ethanol, ethyl alcohol, mek, methyl ethyl ketone, hexane, toluene, toluol, adsorption, regeneration, dehydration, distillation, nitrogen, steam, automatic recirculation system, liquid nitrogen, nitrogen generator, psa, tsa, pressure swing, thermal swing, molecular sieves, zeolite, molsieves, carbon molecular sieves, cms, tank farm, storage tanks, underground tanks, above ground tanks, VOC, COV, HAP, LEL, EPC, EPCm, EPCi, FORMIGONI, ING, DEC ITALIA, DEC S.p.A., DEC SPA, DEK, D.E.C., DEC ITALY, DECA, DECA IMPIANTI, D.E.C.A., italwanson, solinas, italba, recupero solventi, recupero solvente, carbone attivo, imballaggio flessibile, rotocalco, laminazione, accoppiamento, adesivi, flexo, flessografia, inceneritori, termico, rigenerativo, acetato di etile, etac, alcol etilico, etanolo, isopropanolo, stoccaggio, distribuzione, serbatoio, serbatoi, interrato, interrati, recuperation solvant, recuperation solvants, RECUPERACION DISOLVENTES, DISTILLAZIONE, DISTILLATION DESTILLACION ENVIRONMENT GAS INERTE INERT GAS GAZ AZOTO NITROGEN nitrogeno AZOTE VAPORE STEAM VAPEUR VAPOR DAMPF IMBALLAGGIO flessibile flexible PACKAGING EMBALLAGE EMBALAJE MISCELE MIXTURE MELANGE MEZCLA DEPURAZIONE ARIA PURIFICATION EPURATION TRATTAMENTO ARIA AIR TREATMENT TRAITEMENT TRATO AIRE ACQUA WATER EAU AGUA ECOLOGIA ECOLOGY ECOLOGIE INQUINAMENTO POLLUTION CHARBON ACTIF CARBON ACTIVADO PLANT INSTALLATION PLANTA LAGEN Abluft Optimierung Abluft Reinigung Losemittel Ruckgewinnung, N2, LN2, N2G, nitrogen generator

Being an evolution of the solvent recovery plant using the DEC.RSV™ process (activated carbon adsorption system, with steam regeneration), the plant presents some common steps.

The solvent recovery unit is composed by two or more activated carbon adsorbers which alternate the adsorption and regeneration phase. The Solvent Laden Air (SLA), once treated (filtered 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 deriving from this process is cleansed. In the next phase a hot inert gas (nitrogen, N2) flow, in a closed loop circulation, gives heat to the activated carbon bed, desorbing the solvent.

In particular this system, thanks to our exclusive gas-phase pre-dehydration process (DEC.PHD™), offers the advantage to recover directly a mixture of solvents with an extremely low water content [without the absolute need to install a second stage dehydration system (DEC.ADM™) or a complex distillation system]. We shall consider that water comes from the partial adsorption of (ambient air) humidity in the flow to be treated. Systems for correction of relative humidity (DEC.RHC™) could be implemented for specific environmental or process conditions.

solvent recovery, activated carbon, flexible packaging, rotogravure, roto, lamination, coating, flexo, flexography, ethyl acetate, alcohol, ethanol, ethyl alcohol, mek, methyl ethyl ketone, hexane, toluene, toluol, adsorption, regeneration, dehydration, distillation, nitrogen, steam, automatic recirculation system, liquid nitrogen, nitrogen generator, psa, tsa, pressure swing, thermal swing, molecular sieves, zeolite, molsieves, carbon molecular sieves, cms, tank farm, storage tanks, underground tanks, above ground tanks, VOC, COV, HAP, LEL, EPC, EPCm, EPCi, FORMIGONI, ING, DEC ITALIA, DEC S.p.A., DEC SPA, DEK, D.E.C., DEC ITALY, DECA, DECA IMPIANTI, D.E.C.A., italwanson, solinas, italba, recupero solventi, recupero solvente, carbone attivo, imballaggio flessibile, rotocalco, laminazione, accoppiamento, adesivi, flexo, flessografia, inceneritori, termico, rigenerativo, acetato di etile, etac, alcol etilico, etanolo, isopropanolo, stoccaggio, distribuzione, serbatoio, serbatoi, interrato, interrati, recuperation solvant, recuperation solvants, RECUPERACION DISOLVENTES, DISTILLAZIONE, DISTILLATION DESTILLACION ENVIRONMENT GAS INERTE INERT GAS GAZ AZOTO NITROGEN nitrogeno AZOTE VAPORE STEAM VAPEUR VAPOR DAMPF IMBALLAGGIO flessibile flexible PACKAGING EMBALLAGE EMBALAJE MISCELE MIXTURE MELANGE MEZCLA DEPURAZIONE ARIA PURIFICATION EPURATION TRATTAMENTO ARIA AIR TREATMENT TRAITEMENT TRATO AIRE ACQUA WATER EAU AGUA ECOLOGIA ECOLOGY ECOLOGIE INQUINAMENTO POLLUTION CHARBON ACTIF CARBON ACTIVADO PLANT INSTALLATION PLANTA LAGEN Abluft Optimierung Abluft Reinigung Losemittel Ruckgewinnung, N2, LN2, N2G, nitrogen generator

This process also represents the solution for the recovery of problematic solvents, which usually are considered "NOT RECOVERABLE" or "DANGEROUS": typical application is the recovery of ketones (such as MEK - methylethylketone): check for our DEC.FPDS™ process control module.

For further reduction of water content, DEC IMPIANTI has developed and applied several dehydration processes, before condensation (in gaseous phase) or after condensation (in gaseous or liquid phase). The biggest advantages of our dehydration systems (DEC.ADM™) is to recover anhydrous solvents, while optimizing the energy consumptions: direct condensation of a dehydrated solvent mix (without the need to condense / freeze important quantities of water) give energetic advantages and eliminates the problem to obtain a water phase (contaminated by solvents) to be treated (vaporized or sent to cooling tower) before discharge.