Continuous countercurrent ion exchange process
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United States of America Patent
Stats
-
Jul 21, 1981
Grant Date -
N/A
app pub date -
Feb 26, 1980
filing date -
Feb 26, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for absorbing ions of interest onto ion exchange resin particles from a feed liquor containing ions which when absorbed on said particles cause the density of the particles to increase. The process comprises the steps of (1) flowing the feed liquor upwardly through a main bed of ion exchange resin particles contained in a main chamber of an absorption column and thereby maintaining the bed in fluidized state; (2) continuously collecting the denser loaded particles from the lower region of the absorption column; (3) passing an outflow of the feed liquor from the upper region of the main chamber upwardly into the lower region of the polishing chamber containing a secondary bed of fluidized ion exchange resin particles whereby residual ions of interest are polished from the liquor, and (4) producing a barren liquor flowing out of the upper region of the polishing chamber.
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