Patents Assigned to Nouvelles Applications Technologiques (NAT)
  • Patent number: 5501776
    Abstract: For the regeneration of a liquid desiccant, a stripping agent is used which is liquid at ambient temperature and pressure, and forms a heteroazeotrope with water, along with the following steps: (a) distillation of the water-laden liquid desiccant to form vapor and partially regenerated liquid desiccant; (b) reboil partially regenerated liquid desiccant; (c) stripping of partially regenerated liquid desiccant during (a) and (b), using vaporized stripping agent; (d) a condensing of vapor the exiting the distillation, the condensation producing two liquid phases, one mainly water and the other mainly stripping agent; (e) heating the stripping agent-rich liquid phase exiting step (d) to generate a vapor phase which is richer in water than said liquid phase and a water-depleted liquid phase; and (f) returning the vaporized liquid phase exiting step (e) to step (c).
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: March 26, 1996
    Assignees: Institut Francais du Petrole, Nouvelles Applications Technologiques (NAT)
    Inventors: Christophe Lermite, Jean-Claude Amande, Bernard Chambon, Joseph Larue