Continuous fluidized-bed contactor with recycle of sorbent

Details Continuous fluidized-bed contactor with recycle of sorbent Continuous fluidized-bed contactor with recycle of sorbent

1992-07-24

1996-07-09

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210676, 210682, 210688, B01D 1502

Patent

active

055341535

ABSTRACT:
A continuous fluidized-bed contactor containing sorbent particles is used to remove solutes from liquid solvents. As the sorbent particles, for example gel beads, sorb the solute, for example metal ion species, the sorbent particles tend to decrease in diameter. These smaller loaded sorbent particles rise to the top of the contactor, as larger sorbent particles remain at the bottom of the contactor as a result of normal hydraulic forces. The smaller loaded sorbent particles are then recovered, regenerated, and reintroduced into the contactor. Alternatively, the loaded sorbent particles may also slightly increase in diameter, or exhibit no change in diameter but an increase in density. As a result of normal hydraulic forces the larger loaded sorbent particles fall to the bottom of the contactor. The larger loaded sorbent particles are then recovered, regenerated, and reintroduced into the contactor.

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