Patent ID: 8052847
Filing Date: 2011-11-08
Classification: B01D,Y10S

Abstract:
1. A method for recovery of liquid desiccant in a closed loop comprising: spraying liquid desiccant from a desiccant holding area into an air stream, wherein said desiccant absorbs water from said air forming wet desiccant; removing said wet desiccant and preheating it in a heat exchanger; moving preheated wet desiccant from said heat exchanger into a concentrator; boiling said preheated wet desiccant in the concentrator producing a mixed vapor; causing said mixed vapor to enter a distillation column at a bottom end, wherein water vapor exits said distillation column at a top end; condensing said water vapor to purified water in a condenser and storing it; spraying a portion of said purified water entering through a refluxer port into said distillation column in proximity to the top end of said column to scrub said desiccant from said column; and returning purified desiccant from said concentrator through said heat exchanger and into a desiccant holding area.