Moving bed nuclear reactor for process irradiation

Claim 1

A PROCESS FOR PRODUCING A HIGH VISCOSITY INDEX LUBRICANT WHICH COMPRISES ESTABLISHING A BED OF FREE FLOW PARTICULATE SOLIDS CONTANING FISSILE MATERIAL IN A REACTION ZONE, SAD BED CONTAINING A CRITICAL VOLUME OF SAID FISSILE MATERIAL, PASSING A RELATIVELY COOL ALIPHATIC HYDROCARBON HAVING IN THE RANGE OF 10 TO 25 CARBON ATOMS PER MOLECULE DOWNWARDLY IN A LIQUID STATE THROUGH SAID BED, ESTABLISHING A UPPER LIQUID LEVEL OF SAID BED, THE AMOUNT OF CARBON BELOW THE UPPER LEVEL OF SAID BED, THE AMOUNT OF LIQUID BELOW SAIDD LIQUID LEVEL BEING SUFFICIENT TO SUPPLY CRITICAL MODERATION TO SAID CRITICA VOLUME WHEREBY A SUBSTAINED NUCLEAR FISSION REACTION IS ACHIEVED, CONTROLLING THE RATE OF SAD NUCLEAR REACTION RESPONSIVE TO SAID LIQUID LEVEL, WITHDRAWING HEATED, IRRADIATED AND CONVERTED LIQUID PRODUCT FROM THE LOWER PORTION OF SAID REACTION ZONE AND RECOVERING THEREFROM A DISTILLATE LUBRICANT FRACTION BOILING IN THE RANGE OF 600 TO 1000*F. AND HAVING A VISCOSITY INDEX ABOVE 120.