Concentrating beer containing carbon dioxide by crystallization at elevated pressure

Claim 1

A PROCESS FOR CONCENTRATING BEER CONTAINING CARBON DIOXIDE WHICH COMPRISES COOLING SAID BEER IN A CHILLER TO FORM A SLURRY OF ICE CRYSTALS IN MOTHER LIQUOR, PASSING SAID SLURRY INTO AN ELONGATED, CONFINED SEPARATION ZONE WHEREIN SAID ICE CRYSTALS ARE MOVED IN A COMPACT MASS INTO A BODY OF WATER FORMED BY MELTING THE ICE CRYSTALS IN A DOWNSTAIRS PORTION OF SAID ZONE WHILE DISPLACING WATER FROMSAID BODY BACK INTO THE ADVANCING CRYSTAL MASS, WITHDRAWING WATER FROM SAID DOWNSTREAM PORTION OF SAID ZONE, WITHDRAWING MOTHER LIQUOR FROMA MID-SECTION OF SAID ZONE, MAINTAINING SAID CHILLER AND SAID SEPARATION ZONE UNDER SUFFICIENT PRESSURE TO KEEP CARBON DIOXIDE FROM EVOLING FROMSAID MOTHER LIQUOR INSAID SEPARATION ZONE, RELEASING THE PRESSURE ON AT LEAST A PORTION OF THE WITHDRAWN MOTHER LIQUOR SO THAT CARBON DIOXIDE IS EVOLVED THEREFROMM,SEPARATING CARBON DIOXIDE FROM THE WITHDRAWN MOTHER LIQUOR AFTER THE PRESSURE HAS BEEN REDUCED, AND RECYCLING MOTHER LIQUOR THUS VENTED TO SAID CHILLER.