Abstract: Methods and systems for producing a hydrocarbon are provided. The method can include cracking one or more C2-C10 hydrocarbons in the presence of a catalyst under conditions sufficient to produce an effluent containing ethylene, propylene, gasoline, and a coked-catalyst, wherein the catalyst includes a first catalytic component having an average pore size of less than 6.4 ? and a second catalytic component having an average pore size of 6.4 ? or more, separating the effluent to provide a recovered coked-catalyst and a cracked product; and regenerating the recovered coked-catalyst to produce heat and the catalyst.

Abstract: Methods and systems for producing a hydrocarbon are provided. The method can include cracking one or more C2-C10 hydrocarbons in the presence of a catalyst under conditions sufficient to produce an effluent containing ethylene, propylene, gasoline, and a coked-catalyst, wherein the catalyst includes a first catalytic component having an average pore size of less than 6.4 ? and a second catalytic component having an average pore size of 6.4 ? or more, separating the effluent to provide a recovered coked-catalyst and a cracked product; and regenerating the recovered coked-catalyst to produce heat and the catalyst.

Abstract: Systems and methods for injecting gas into a fluidized bed of particles are provided. The system can include a gas distribution system. The gas distribution system can include a header having a flow passage and a nozzle body coupled to the header. The nozzle body can have an inlet end in fluid communication with the flow passage and an outlet end positioned outside of the header. The nozzle body can have a longitudinal axis that is substantially perpendicular to a direction of flow through the flow passage. The nozzle body can have an orifice positioned between the inlet end and the outlet end.

Abstract: Methods and systems for producing a hydrocarbon are provided. The method can include cracking one or more C2-C10 hydrocarbons in the presence of a catalyst under conditions sufficient to produce an effluent containing ethylene, propylene, gasoline, and a coked-catalyst, wherein the catalyst includes a first catalytic component having an average pore size of less than 6.4 ? and a second catalytic component having an average pore size of 6.4 ? or more, separating the effluent to provide a recovered coked-catalyst and a cracked product; and regenerating the recovered coked-catalyst to produce heat and the catalyst.

Abstract: Systems and methods for injecting gas into a fluidized bed of particles are provided. The system can include a gas distribution system. The gas distribution system can include a header having a flow passage and a nozzle body coupled to the header. The nozzle body can have an inlet end in fluid communication with the flow passage and an outlet end positioned outside of the header. The nozzle body can have a longitudinal axis that is substantially perpendicular to a direction of flow through the flow passage. The nozzle body can have an orifice positioned between the inlet end and the outlet end.

Abstract: System and method for processing hydrocarbon. One or more embodiments of the method include combining a first hydrocarbon including a de-asphalted oil with a recycled hydrocarbon product to produce a combined hydrocarbon, cracking the combined hydrocarbon to produce a cracked hydrocarbon product, and recycling at least a portion of the cracked hydrocarbon product to provide the recycled hydrocarbon product, wherein the recycled hydrocarbon product comprises a cycle oil product, a naphtha product, or a combination thereof.

Abstract: Methods and apparatus for preventing coke formation in a plenum are provided. The apparatus can include a turbulator for use in a plenum. The turbulator can include a deflector disposed inside the plenum proximate an inlet to the plenum from a cyclone, wherein the plenum and the cyclone are disposed in a fluid catalytic cracker.

Abstract: Systems and methods for regenerating a spent catalyst are provided. The method can include heating a hydrocarbon and a coke precursor in the presence of catalyst particles to provide a cracked hydrocarbon product and coked catalyst particles. The cracked hydrocarbon product and the coked catalyst particles can be selectively separated to provide a hydrocarbon product and coked catalyst particles. The coked catalyst particles can be mixed with a carrier fluid to provide a mixture. The mixture can be introduced to an upper surface of a dense phase catalyst zone disposed within a regenerator. A gas can be introduced to a lower zone of the dense phase catalyst zone. At least a portion of the carbon deposited on the coked catalyst particles can be combusted to provide a flue gas, heat, and a regenerated catalyst.

Abstract: Systems and methods for regenerating a spent catalyst are provided. The method can include mixing a spent catalyst with a carrier fluid to provide a mixture. The spent catalyst can include carbon deposited on at least a portion thereof. The carrier fluid can include an oxygen containing gas. The mixture can be introduced to or above an upper surface of a dense phase catalyst zone disposed within a regenerator. A gas can be introduced to a lower zone of the dense phase catalyst zone. At least a portion of the carbon deposited on the catalyst can be combusted to provide a flue gas, heat, and a regenerated catalyst.

Abstract: 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.

Abstract: Catalyst regenerators and methods for using same. The regenerator can include a regenerator housing containing a dense phase catalyst bed for receiving a catalyst to be regenerated. A heater can be disposed in the regenerator and can have a fuel nozzle configured to eject a mixture of fuel and an oxygen-lean gas for combustion to supplement the heat to satisfy the reactor heat demand when a light feedstock cracked that may not provide sufficient coke formation on the catalyst to fully satisfy the reactor heat demand.

Abstract: Methods and apparatus for separating particulates from a fluid are provided. The apparatus can include a separation section having at least one wall, a first end, a second end, and an inner metal surface exposed to an internal volume of the separation section. The apparatus can also include a fluid discharge outlet in fluid communication with the internal volume at the first end. The apparatus can also include a particulate discharge outlet in fluid communication with the internal volume at the second end. The apparatus can also include an inlet in fluid communication with the internal volume. The inlet can be disposed intermediate the first end and the second end.

Abstract: Methods and apparatus for preventing coke formation in a plenum are provided. The apparatus can include a turbulator for use in a plenum. The turbulator can include a deflector disposed inside the plenum proximate an inlet to the plenum from a cyclone, wherein the plenum and the cyclone are disposed in a fluid catalytic cracker.

Abstract: System and method for processing hydrocarbon. One or more embodiments of the method include combining a first hydrocarbon including a de-asphalted oil with a recycled hydrocarbon product to produce a combined hydrocarbon, cracking the combined hydrocarbon to produce a cracked hydrocarbon product, and recycling at least a portion of the cracked hydrocarbon product to provide the recycled hydrocarbon product, wherein the recycled hydrocarbon product comprises a cycle oil product, a naphtha product, or a combination thereof.

Abstract: Methods and apparatus for separating particulates from a fluid are provided. The apparatus can include a separation section having at least one wall, a first end, a second end, and an inner metal surface exposed to an internal volume of the separation section. The apparatus can also include a fluid discharge outlet in fluid communication with the internal volume at the first end. The apparatus can also include a particulate discharge outlet in fluid communication with the internal volume at the second end. The apparatus can also include an inlet in fluid communication with the internal volume. The inlet can be disposed intermediate the first end and the second end.

Abstract: Catalyst regenerators and methods for using same. The regenerator can include a regenerator housing containing a dense phase catalyst bed for receiving a catalyst to be regenerated. A heater can be disposed in the regenerator and can have a fuel nozzle configured to eject a mixture of fuel and an oxygen-lean gas for combustion to supplement the heat to satisfy the reactor heat demand when a light feedstock cracked that may not provide sufficient coke formation on the catalyst to fully satisfy the reactor heat demand.

Abstract: Systems and methods for regenerating a spent catalyst are provided. The method can include heating a hydrocarbon and a coke precursor in the presence of catalyst particles to provide a cracked hydrocarbon product and coked catalyst particles. The cracked hydrocarbon product and the coked catalyst particles can be selectively separated to provide a hydrocarbon product and coked catalyst particles. The coked catalyst particles can be mixed with a carrier fluid to provide a mixture. The mixture can be introduced to an upper surface of a dense phase catalyst zone disposed within a regenerator. A gas can be introduced to a lower zone of the dense phase catalyst zone. At least a portion of the carbon deposited on the coked catalyst particles can be combusted to provide a flue gas, heat, and a regenerated catalyst.

Abstract: Systems and methods for regenerating a spent catalyst are provided. The method can include mixing a spent catalyst with a carrier fluid to provide a mixture. The spent catalyst can include carbon deposited on at least a portion thereof. The carrier fluid can include an oxygen containing gas. The mixture can be introduced to or above an upper surface of a dense phase catalyst zone disposed within a regenerator. A gas can be introduced to a lower zone of the dense phase catalyst zone. At least a portion of the carbon deposited on the catalyst can be combusted to provide a flue gas, heat, and a regenerated catalyst.

Abstract: A dual riser FCC process for converting C3/C4-containing feedstocks to aromatics. First and second hydrocarbon feeds (5, 6) are supplied to the respective first and second risers (2, 4) in a dual-riser FCC unit with a gallium enriched catalyst to make an effluent rich in ethylene, propylene and aromatics. The first riser (2) is operated at less severe conditions than the second riser (4) and can receive a relatively heavy feed such as gas oil. The feed to the second riser (4) includes propane, for example LPG, propane recycle from the C3 splitter (72), etc. The FCC catalyst can include gallium to promote aromatics formation.

Abstract: Self purging expansion joint can include first annular seal sleeve connecting bellows to first conduit and second annular seal sleeve connecting bellows to second conduit. Flow-restricting orifice(s) can allow a higher pressure external fluid to flow through the annular passage to purge the bellows and into the primary fluid flow passage of the expansion joint containing a lower pressure fluid. Self purging expansion joint can be utilized in a disengager vessel of a fluid catalytic cracking (FCC) unit, for example, between primary and secondary stripping cyclones.