Production of dairy wax and low pour point lubricating oils

Claim 1

A PROCESS FOR THE PRODUCTION OF DAIRY WAX AND A LOW POUR POINT LUBRICATING OIL WHICH COMPRISES THE STEPS OF: (A) DISTILLING A WAX-BEARING CRUDE OIL TO OBTAIN A GAS OIL AND A NON-VAPORIZED RESIDUAL OIL THEREFROM, (B) SUBJECTING A FIRST PORTION OF THE RESIDUAL OIL TO VACUUM DISTILLATION TO RECOVER A HEAVY GAS OIL THEREFROM, (C) SUBJECTING THE SAID FIRST PORTION OF THE RESIDUAL OIL, FROM WHICH THE HEAVY GAS OIL HAS BEEN SEPARATED, TO A VISCOSITY-BREAKING OPERATION UNDER CONDITIONS TO PRODUCE SUBSTANTIAL QUANTITIES OF GAS OIL THEREFROM AND TO DEASPHALT THE SAME, (D) RECOVERING THE SAID SUBSTANTIAL QUANTITIES OF GAS OIL BY VACUUM DISTILLATION, (E) CHANGING SAID GAS OILS TOGETHER WITH ANOTHER PORTION OF SAID RESIDUAL OIL TO A CATALYTIC CRACKING OPERATION MAINTAINED UNDER CONDITIONS TO DEHYDROGENATE NAPHTHENES, (F) CRACKING THE COMBINATION OF SAID GAS OILS AND SAID ANOTHER PORTION OF SAID RESIDUAL OIL IN SAID CATALYTIC CRACKING OPERATION TO PRODUCE ESSENTIALLY SUBSTANTIAL QUANTITIES OF HEAVY AROMATICS CONTAINING GAS OIL CONTAINING THE ELEMENTS OF SAID DAIRY WAX AND SAID LOW POUR POINT OIL, (G) SOLVENT-EXTRACTING SAID LAST-MENTIONED GAS OIL OBTAINING A PARAFFINIC RAFFINATE CONTAINING ELEMENTS OF SAID DAIRY WAX AND THE ELEMENTS OF SAID LOW POUR POINT OIL, (H) DISTILLING SAID RAFFINATE OIL TO REMOVE APPROXIMATELY A HEART CUT FRACTION THEREFROM CONSISTING OF FRACTIONS REMAINING WHEN ABOUT 2 TO 10 PERCENT BOTTOMS AND 40-60 PERCENT OVERHEAD HAVE BEEN REMOVED THEREFROM, (I) DEWAXING SAID HEART CUT FRACTION FORMING THEREFROM A SOLVENT PHASE CONTAINING SOFT WAX AND OIL AND A DAIRY WAX-CONTAINING PHASE, (J) SEPARATING THE SOLVENT, SOFT WAX AND OIL CONTAINING PHASE FROM THE SAID DAIRY WAX-CONTAINING PHASE, (K) REMOVING SOLVENT FROM SAID DAIRY WAX-CONTAINING PHASE TO RECOVER SAID DAIRY WAX, (L) FURTHER DEWAXING SAID SOLVENT SOFT WAX AND OILCONTAINING PHASE TO RECOVER A SOFT WAX AND SOLVENT PHASE AND AN OIL IN OLVENT PHASE (M) SEPARATING OIL IN SOLVENT PHASE FROM SAID SOFT WAX IN SOLVENT PHASE, AND (N) REMOVING SOLVENT FROM SAID OIL IN SOLVENT PHASE TO RECOVER SAID LOW POUR LUBRICATING OIL.