Method for regenerating cation exchange resin
Abstract
Abstract A METHOD IS PROVIDED FOR REGENERATING CATION EXCHANGE RESIN CONTAINING INSOLUBLE SULFATE-FORMING CATIONS WHILE PREVENTING THE FORMATION OF SULFATE PRECIPITATES. UN CARRYING OUT THE METHOD, SULFURIC ACID IS INTRODUCED INTO A REGENERATION COLUMN AT A REGENERANT INLET TO ESTABLISH A CONCENTRATED REGENERANT ZONE. EXHAUSTED REGENERANT IS WITHDRAWN FROM THE COLUMN AT AN OUTLET. IN ACCORDANCE WITH THE INVENTION, DILUTION WATER IS INTRODUCED INTO THE COLUMN BETWEEN THE REGENERANT INLET AND THE OUTLET TO FORM A DILUTE REGENERANT ZONE. DURING REGENERATION, THE RESIN PASSES FIRST THROUGH THE DILUTE REGENERANT ZONE, WHERE IT IS PARTIALLY REGENERATED. THE RESIN IS THEN FURTHER REGENERATED IN THE CONCENTRATED REGENERANT ZONE.
Inventors
- 👤 Leo F Ryan
Bibliographic Details
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