Method of regenerating ion exchange resin

Details Method of regenerating ion exchange resin Method of regenerating ion exchange resin

2005-06-28

2005-06-28

Cintins, Ivars C. (Department: 1724)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

C210S675000, C210S678000

Reexamination Certificate

active

06911481

ABSTRACT:
A method of regenerating an ion exchange resin, comprising the steps of packing a used ion exchange resin in a regeneration tower; and repeating at least twice a step comprising passing an aqueous solution of regenerant through the regeneration tower downward from a top part of the regeneration tower and thereafter passing ultra-pure water through the regeneration tower upward from a bottom of the regeneration tower. This method enables regenerating an ion exchange resin efficiently and homogeneously without mixing of the regenerant into ion exchange resin towers for purification.

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Japanese Abstract, JP 09 012306 A, Sumitomo Chem. Co., Ltd., Jan. 14, 1997,Derwent Publications.

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