Centrifugal dewaxing process

Claim 1

IN A PROCESS FOR SEPARATING WAX AND OIL IN THE PRESENCE OF A DEWAXING SOLVENT HAVING A DENSITY LESS THAN THAT OF THE WAX BY MEANS OF A CENTRIFUGAL WHEEL HAVING BETWEEN ITS HUB AND PERIPHERY SPACED CONCENTRIC PERFORATED BANDS FORMING AN ANNULUS BETWEEN EACH ADJACENT PAIR OF BANDS AND HAVING BAFFLE MEANS CLOSING EACH END OF EACH ANNULUS, AND WHEREIN FRICTION BETWEEN THE FLOWING MATERIALS AND SAID CONCENTRIC PERFORATED BANDS CAUSES THE MATERIALS TO BECOME HEATED ABOVE THE TEMPERATURE AT WHICH THEY WERE INTRODUCED TO THE WHEEL, THE STEPS WHICH COMPRISE SEPARATELY COOLING A MORE DENSE STREAM COMPRISING DEWAXING SOLVENT AND WAXY HYDROCARBON CHARGE AND A LESS DENSE STREAM OF DEWAXING SOLVENT ALONE EACH TO A TEMPERATURE BELOW THE DESIRED DEWAXING TEMPERATURE, FEEDING SAID STREAMS INTO THE INTERIOR OF THE ROTATING WHEEL CONCURRENTLY THROUGH SEPARATE CHANNELS OF THE HUB AT ONE SIDE OF THE WHEEL, THE DEWAXING SOLVENT AND WAXY HYDROCARBON STREAM BEING INTRODUCED INTO THE INTERIOR OF THE WHEEL AT A LOCUS INTERMEDIATE ITS HUB AND PERIPHERY AND THE DEWAXING SOLVENT STREAM BEING INTRODUCED THEREIN AT A LOCUS NEARER TO BUT SPACED FROM THE PERIPHERY, ROTATING THE WHEEL WHEREBY THE LESS DENSE STREAM FLOWS THROUGH THE PERFORATIONS IN