Process for the de-ionization of aqueous saline solutions
Abstract
Abstract A PROCESS FOR THE DE-IONIZATION OF AQUEOUS SALINE SOLUTIONS BY MEANS OF ION EXCHANGE TREATMENT IS DISCLOSED, THE PROCESS BEING CHARACTERIZED BY THE FACT THAT THE PROCESS IS CARRIED OUT BY USING A CATION EXCHANGER, AN ANION EXCHANGER AND A CATION EXCHANGER ARRANGED IN SERIES, AND WHEREIN THE FIRST CATION EXCHANGER IS CONSTITUTED OF ESSENTIALLY WEAK CATION EXCHANGE RESINS AND THE ANION EXCHANGER IS CONSTITUTED OF WEAK ANION EXCHANGE RESINS, THE PROCESS COMPRISING THE STEPS OF: PASSING THE AQUEOUS SOLUTION TO BE DE-IONIZED THROUGH THE FIRST CATION EXCHANGER, THEN THROUGH THE ANION EXCHANGER AND AT LAST THROUGH THE SECOND CATION EXCHANGER; RECYCLING A PART OF THE SOLUTION EFFLUENT FROM THE ANION EXCHANGER UPSTREAM OF THE FIRST CATION EXCHANGER AND CONTROLLING THE RECYCLE IN ORDER TO OBTAIN A METHYL ORGANE ALKALINITY IN THE SOLUTION FEEDING THE FIRST CATION EXCHANGER, AND IF NECESSARY, DECARBONATING THE SOLUTION EFFIUENT FROM THE LAST CATION EXCHANGER AND RECYCLING THE RECOVERED CO2 UPSTREAM OF THE ANION EXCHANGER.
Inventors
- 👤 Gianfranco Boari
- 👤 Lorenzo Liberti
- 👤 Carlo Merli
- 👤 Roberto Passino
Bibliographic Details
Claims Analysis
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