Heated weir in a refrigeration tank

Claim 1

A REFRIGERATION PROCESS FOR CONVERSION OF A FIRST AQUEOUS SOLUTION TO A MORE CONCENTRATED PRODUCT SOLUTION AND ICE CRYSTALS WHICH WHEN MELTED PRODUCE A LESS CONCENTRATED PRODUCT SOLUTION, THE PROCESS COMPRISING THE STEPS OF COOLING SAID FIRST SOLUTION IN A CRYSTALLIZATION ZONE TO FORM ICE CRYSTALS, FLOWING A SLURRY OF SAID CRYSTALS IN SAID MORE CONSENTRATED SOLUTION FROM SAID ZONE OVER A WEIR, SEPARATING SAID CRYSTALS FROM SAID MORE CONCENTRATED SOLUTION, AND PASSING A HYDROCARBON HEAT EXCHANGE LIQUID THROUGH A CYCLE OF OPERATIONS IN THE PROCESS, SAID CYCLE INCLUDING THE STEPS OF WARMING SAID LIQUID IN ONE OF SAID OPERATIONS BY PASSING IT IN HEAT EXCHANGE RELATIONSHIP WITH SAID FIRST SOLUTION, COOLING SAID LIQUID IN ANOTHER OF SAID OPERATIONS BY PASSING IT IN HEAT EXCHANGE RELATIONSHIP WITH ONE OF SAID PRODUCT SOLUTIONS, DIVERTING A PORTION OF THE WARMED HEAT EXCHANGE LIQUID THROUGH THE OVERFLOW LIP OF SAID WEIR TO PREVENT ACCUMULATION OF ICE CRYSTALS AT SAID LIP, AND PASSING THE COOLED HEAT EXCHANGE LIQUID FROM THE LIP IN HEAT EXCHANGE RELATIONSHIP WITH SAID FIRST SOLUTION IN SAID ONE OPERATION TO ASSIST IN COOLING SAID FIRST SOLUTION.