Process for the regeneration of liquid desiccants.

摘要

Process for regenerating a liquid desiccant, employing a stripping agent which is liquid at ambient temperature and pressure and which forms a heteroazeotrope with water, which comprises: a) a stage of reboiling (R1) the water-laden liquid desiccant; b) a stage of distilling (D1) the said desiccant, comprising at least one rectification stage; c) a stage of stripping (S1) the liquid desiccant partially regenerated during stages a and b, using the vaporised stripping agent; d) a stage for condensing (C1) the vapour leaving the distillation stage b, condensation generating two liquid phases, one with water predominating (9), the other with stripping agent predominating (10); e) heating (E3) the stripping agent-rich liquid phase originating from stage d, heating generating a vapour phase (12) which is richer in water than the said liquid phase and a liquid phase depleted in water; f) returning the liquid phase originating from stage e towards stage c.