solvent recovery systems - DEC.CRY™
cryogenic condensation, liquid nitrogen - N2
The cryogenic condensation solvent recovery process DEC.CRY™ is ideal for low flow rates (typically < 2.000 Nm³/h) and high concentrations of VOC ( > 0,5% vol).
Using liquid nitrogen as the refrigerant, the cryo-condensation process is designed to cool the effluent in a process stream to very low temperatures, thanks to the use of advanced heat exchangers, which are characterized by high fractionating capacities of vapors and gases.
The stream effluent is separated by decreasing the vapor pressure as a function of the vapor/liquid and vapor/solid equilibrium. The VOC is recovered for reuse in the process (directly or after distillation) or as a fuel (DEC.WTE™ - Waste To Energy module), while the nitrogen is cycled back into the process for purging and blanketing operations.
The cryo-condensation units are usually very compact, requiring a relatively small footprint, and are skid mounted (DEC.SMS™ - Smart Modular Systems), lowering installation and start-up costs. The system design minimizes moving parts, reducing maintenance and repair.
Depending on the type of solvent(s) to be recovered and the level of VOC emission requested at the stack of the system, a disposable activated carbon filter (DEC.ACF™) may be required.
For higher flow rates (5.000 ÷ 1.000.000 Nm³/h), please check solvent recovery systems based on activated carbon, steam or nitrogen desorption (DEC.RSV™ and DEC.RSG™).