Systems and methods for residue upgrading
View Patent ↗Systems and methods for processing hydrocarbons are provided. A hydrocarbon can be distilled to provide a distillate, a gas oil, and a residue. The residue can include, but is not limited to asphaltenes and non-asphaltenes. The residue can be mixed with a solvent to provide a mixture. The asphaltenes can be selectively separated from the mixture to provide a deasphalted oil. At least a portion of the deasphalted oil and at least a portion of the gas oil can be hydroprocessed to provide a hydroprocessed hydrocarbon. At least a portion of the distillate and at least a portion of the hydroprocessed hydrocarbon can be cracked in a first reaction zone to provide a first cracked product comprising C2 hydrocarbons, C3 hydrocarbons, C4 hydrocarbons, and naphtha.
1. A method for processing hydrocarbons, comprising:
distilling a hydrocarbon to provide a distillate, a gas oil, and a residue, wherein the residue comprises asphaltenes and non-asphaltenes;
mixing the residue with a solvent to provide a mixture;
selectively separating the asphaltenes from the mixture to provide a deasphalted oil;
hydroprocessing at least a portion of the deasphalted oil and at least a portion of the gas oil to provide a hydroprocessed hydrocarbon;
cracking at least a portion of the distillate and at least a portion of the hydroprocessed hydrocarbon in a first reaction zone to provide a first cracked product comprising C 2 hydrocarbons, C 3 hydrocarbons, C 4 hydrocarbons, and naphtha;
cracking at least a portion of a recycle hydrocarbon comprising C 4 hydrocarbons and light naphtha in a second reaction zone to provide a second cracked product comprising C 2 hydrocarbons and C 3 hydrocarbons, wherein the recycle hydrocarbon is recovered from the first cracked product;
mixing the first cracked product and the second cracked product to provide a mixed product; and
selectively separating the mixed product to provide the recycle hydrocarbon and one or more hydrocarbon products comprising at least one of ethylene, ethane, propylene, propane, fuel gas, mixed C 4 hydrocarbons, naphtha, and bunker oil.