Process for the purification of beet sugar juice by means of ion exchange resins

Claim 1

A PROCESS FOR THE PURIFICATION OF BEST SUGAR JUICE COMPRISING A FIRST STAGE OF THE PURIFICATION OPERATION AND A SECOND STAGE OF THE PURIFICATION OPERATION, A BEET SUGAR JUICE EXTRACTED OUT OF BEST AND THEN PRETREATED BEING PASSED THROUGH A RESIN COLUMN OF SAID FIRST STAGE IN WHICH A MIXTURE OF A HYDROGEN TYPE WEAKLY ACIDIC CATION EXCHANGE RESIN AND AN ANION EXCHANGE RESIN SELECTED FROM THE GROUP CONSISTING OF HYDROXYL TYPE WEAKLY BASIC ANION EXCHANGE RESINS AND HYDROXYL TYPE WEAKLY BASIC ANION EXCHANGE RESINS IS PACKED AND AN OUTFLOW JUICE FROM SAID RESIN COLUMN OF THE FIRST STAGE BEING PASSED THROUGH ANOTHER RESIN COLUMN OF SAID SECOND STAGE IN WHICH A MIXTURE OF A HYDROGEN TYPE WEAKLY ACID CATION EXCHANGE RESIN AND A STRONGLY BASIC ANION EXCHANGE RESIS IS PACKED, WHEREBY SAID BEET SUGAR JUICE IS DESALTED AND DECOLORIZED AND A USED SOLUTION OBTAINED IN REGENERATING SAID STRONGLY BASIC ANION EXCHANGE RESIN OF THE SECOND STAGE BEING PASSED THROUGH SAID WEAKLY BASIC AND MEDIUM BASIC ANION EXCHANGE RESIN WHEREBY THE LATER IS REGENERATED.