Patent ID: 8062503

Claim:
A method of producing a vacuum gas oil (VGO), consisting of: a) upgrading a heavy hydrocarbon feedstock selected from a vacuum bottom, an atmospheric bottom, or a mixture thereof, by a method comprising: i) providing a regenerated particulate heat carrier comprising oxides of calcium into an upflow reactor, wherein the loading ratio of the particulate heat carrier to the heavy hydrocarbon feedstock is from about 10:1 to about 200:1, and wherein the upflow reactor is at a temperature of about 300-700° C.; ii) allowing the heavy hydrocarbon feedstock to interact with the heat carrier for less than about 5 seconds, to produce a product stream; iii) collecting a liquid product from the product stream; and b) isolating the VGO from the liquid product to obtain a VGO that has an aniline point of about 110° F. to about 170° F.