Method of treating oils derived by thermal treatment of solid carbonaceous materials

Claim 1

A METHOD FOR REDUCING THE POUR POINT OF AN OIL DERIVED BY THERMAL TREATMENT OF SOLID CARBONACEOUS MATERIALS AND CONTAINING HYDROCARBONS WHICH COMPRISES TREATING SAID OIL UNDER SUBSTANTIALLY NON-CRACKING CONDITIONS TO OBTAIN AT LEAST ONE LIGHT FRACTION AND AN OIL RESIDUE, HEAT TREATING SAID OIL RESIDUE AT A TEMPERATURE ABOVE ABOUT 600*F. AND BELOW THE POINT OF INCIPIENT THERMAL DECOMPOSITION OF THE RESIDUE FOR A PERIOD OF TIME WHICH IS INVERSELY PROPORTIONAL TO SAID TEMPERATURE TO PRODUCE A PRODUCT WHICH WHEN COMBINED WITH A LIGHT FRACRTION RESULTS IN AN OIL HAVING A POUR POINT LOWER THAN THE ORIGINAL CRUDE OIL, SAID HEAT TREATMENT PRODUCING SUBSTANTIALLY NO NON-CONDENSIBLE HYDROCARBONS AND SUBSTANTIALLY NO ELEMENTAL CARBON; AND COMBINING SAID MODIFIED OIL RESIDUA PRODUCT WITH AT LEAST A PORTION OF A LIGHT FRACTION TO PRODUCE AN OIL OF LOWER POUR POINT THAN THE ORIGINAL CRUDE.