Refining of hydrocarbon wax

Claim 1

IN A PROCESS FOR REFINING AN OIL-CONTAINING PETROLEUM HYDROCARBON WAX WHICH INCLUDES THE STEPS OF SOLVENT DEOILING THE WAX WITH A KETONE CONTAINING FROM 3 TO 6 CARBON ATOMS TO FORM A DEOILED WAX CAKE AND A FILTRATE, FRACTIONATING THE FLITRATE TO FORM A DEWAXED OIL FRACTION AND A RECOVERED SOLVENT FRACTION, RECOVERING A SUBSTANTIALLY SOLVENT-FREE WAX, AND CONTACTING THE RECOVERED WAX WITH A PARTICULATE ADSORBENT TO REMOVE COLOR AND ODOR BODIES FROM THE WAX UNTIL THE ADSORBENT IS SPENT, THE IMPROVEMENT WHICH COMPRISES THE STEPS OF CONTACTING THE SPENT ADSORBENT WITH AT LEAST A PORTION OF SAID RECOVERED SOLVENT TO DISSOLVE AND REMOVE ANY WAXAND COLOR AND ODOR BODIES REMAINING ON THE ADSORBENT, REMOVING SOLVENT FROM THE WAX-FREE ADSORBENT, DRYING THE ADSORBENT, THEREAFTER RECONTACTING THE DRIED ODSORBENT WITH ADDITIONAL SOLVENTFREE WAXL, AND RECYCLING TO THE SOLVENT DEOILING STEP THE WAX SOLUTION RESULTING FROM CONTACTING THE SPENT ADSORBENT WITH RECOVERED SOLVENT, WHEREBY COLOR AND ODOR BODIES REMOVED FROM THE ADSORBENT ENTER THE DEWAXED OIL FRACTION.