Process for the regeneration of ion-exchange resins and applicat

Details Process for the regeneration of ion-exchange resins and applicat Process for the regeneration of ion-exchange resins and applicat

1975-06-23

1976-05-11

Hart, Charles N.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

71 34, 71 59, 71 63, 210 37A, C02B 170, C02B 176

Patent

active

039561151

ABSTRACT:
Cationic and anionic ion exchange resins are regenerated with highly concentrated acids or bases, under conditions such that the resin temperature at the interface regenerant-liquid or wash water/resin-bead does not rise above about 20.degree.C. The control of this temperature is maintained by the corresponding correlation of the temperature, volume and circulating speed of the regenerant through a resin layer of reduced thickness. The concentrated effluent resulted in regeneration, with the eluated salt, is directly introduced into a technological process, in which the eluated salt and possible regenerant excess are recovered; if necessary, the effluent is processed in known ways.

REFERENCES:
patent: 3144321 (1964-08-01), Butikofer
patent: 3475330 (1969-10-01), Gilles
patent: 3579322 (1971-05-01), Higgins
patent: 3775088 (1973-11-01), Higgins
higgins, Continuous Ion-Exchange of Process Water, Chemical Eng. Progress, June 1969, No. 6, pp. 59 and 60.

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