Additives for maintaining a dense dispersion of crystallizable material in countercurrent contact with an immiscible coolant

Claim 1

IN A PROCESS FOR SEPARATING A CRYSTALLIZABLE COMPONENT FROM A SOLUTION COMPRISING CRYSTALLIZING SAID COMPONENT FROM SAID SOLUTION BY COUNTERCURRENTLY CONTACTING SAID SOLUTION IN A TOWER ZONE WITH AN IMMISCIBLE COOLANT, SAID COOLANT BEING INTRODUCED AT A TEMPERATURE BELOW THE CRYSTALLIZATION TEMPERATURE OF SAID COOLANT IN SAID FEED, SAID FEED BEING INTRODUCED INTO SAID TOWER ZONE ABOVE ITS COMPONENT CRYSTALLIZATION TEMPERATURE IN THE FORM OF A DENSE DISPERSION OF ESSENTIALLY UNIFORM DIAMETER DROPLETS WHICH IN THE TOWER ZONE COUNTERCURRENTLY TO THE CONTINUOUS PHASE COOLANT, THE DISPERSED PHASE GRADUALLY BEING COOLED FROM ITS SAID TEMPERATURE TO ITS COMPONENT CRYSTALLIZATION TEMPERARURE BY DIRECT CONTACT WITH THE COOLANT THEREBY GROWING COMPONENT CRYSTALS WITHIN EACH OF SAID DROPLETS SEPARATING THE CRYSTALLIZED COMPONENT MOTHER LIQUOR SLURRY FROM SAID COOLANT AND SEPARATING THE CRYSTALLIZED COMPONENT FROM SAID CRYSTALLIZED COMPONENT MOTHER LIQUOR SLURRY, THE IMPROVEMENT WHICH COMPRISES ADDIG AN ADDITIVE COMPRISING A SURFACTANT, A MACROMOLECULE AND A PROTEIN TO THE SAID TOWER ZONE WHEREBY HEAT TRANSFER WITHIN THE TOWER IS MAXIMIZED.