Method for producing olefins using a doped catalyst
First Claim
1. A process for producing one or more olefins, comprising:
- doping a hydrocarbon cracking catalyst, comprising;
fluidizing one or more coked-catalyst particles in the presence of one or more oxidants to provide a fluidized mixture;
removing at least a portion of the coke from the one or more coked-catalyst particles to provide regenerated catalyst particles within the fluidized mixture;
distributing one or more doping agents to the fluidized mixture;
depositing the one or more doping agents onto a surface of the regenerated catalyst particles to provide doped catalyst particles;
forming a reaction mixture comprising one or more hydrocarbon feeds and the doped catalyst particles;
cracking at least a portion of the reaction mixture to provide a first product comprising propylene, ethylene, and butane;
selectively separating at least a portion of the first product to provide a second product comprising propylene and a first recycle comprising butane; and
recycling at least a portion of the first recycle to the one or more hydrocarbon feeds.
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Accused Products
Abstract
Processes for producing one or more olefins are provided. In one or more embodiments, a doped catalyst can be prepared by fluidizing one or more coked-catalyst particles in the presence of one or more oxidants to provide a fluidized mixture. At least a portion of the coke can be removed from the coked-catalyst particles to provide regenerated catalyst particles. One or more doping agents can be distributed throughout the fluidized mixture, depositing on the surface of the regenerated catalyst particles to provide doped catalyst particles. One or more hydrocarbon feeds can be fluidized with the doped catalyst particles to provide a reaction mixture which can be cracked to provide a first product containing propylene, ethylene, and butane.
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Citations
28 Claims
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1. A process for producing one or more olefins, comprising:
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doping a hydrocarbon cracking catalyst, comprising; fluidizing one or more coked-catalyst particles in the presence of one or more oxidants to provide a fluidized mixture; removing at least a portion of the coke from the one or more coked-catalyst particles to provide regenerated catalyst particles within the fluidized mixture; distributing one or more doping agents to the fluidized mixture; depositing the one or more doping agents onto a surface of the regenerated catalyst particles to provide doped catalyst particles; forming a reaction mixture comprising one or more hydrocarbon feeds and the doped catalyst particles; cracking at least a portion of the reaction mixture to provide a first product comprising propylene, ethylene, and butane; selectively separating at least a portion of the first product to provide a second product comprising propylene and a first recycle comprising butane; and recycling at least a portion of the first recycle to the one or more hydrocarbon feeds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A process for producing one or more olefins, comprising:
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doping a hydrocarbon cracking catalyst, comprising; fluidizing one or more coked-catalyst particles in the presence of one or more oxidants to provide a fluidized mixture; removing at least a portion of the coke from the one or more coked-catalyst particles to provide regenerated catalyst particles within the fluidized mixture; distributing one or more doping agents to the fluidized mixture; depositing the one or more doping agents onto a surface of the regenerated catalyst particles to provide doped catalyst particles; forming a reaction mixture comprising one or more hydrocarbon feeds and the doped catalyst particles; cracking at least a portion of the reaction mixture in a first reaction zone to provide a first product comprising propylene, ethylene, and butane; cracking a refinery hydrocarbon comprising gas oil, full range gas oil, resid, or a combination thereof in a second reaction zone to provide a cracked hydrocarbon comprising ethylene, propylene, or a combination thereof; combining the first product and the cracked hydrocarbon to form a first mixture; selectively separating at least a portion of the first mixture to provide a second product comprising propylene and a first recycle comprising butane; and recycling at least a portion of the first recycle to the one or more hydrocarbon feeds. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A process for producing one or more olefins, comprising:
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doping a hydrocarbon cracking catalyst, comprising; fluidizing one or more coked-catalyst particles in the presence of one or more oxidants to provide a fluidized mixture; removing at least a portion of the coke from the one or more coked-catalyst particles to provide regenerated catalyst particles within the fluidized mixture; distributing one or more doping agents to the fluidized mixture; depositing the one or more doping agents onto a surface of the regenerated catalyst particles to provide doped catalyst particles; forming a reaction mixture comprising one or more hydrocarbon feeds and the doped catalyst particles; cracking at least a portion of the reaction mixture in a first cracker to provide a first product comprising propylene, ethylene, and butane; cracking a refinery hydrocarbon comprising gas oil, full range gas oil, resid, or a combination thereof in a second cracker to provide a cracked hydrocarbon comprising ethylene, propylene, or a combination thereof; cracking one or more alkanes in a third cracker to provide an effluent comprising ethylene and propylene; combining the first product and the cracked hydrocarbon to form a first mixture; selectively separating at least a portion of the first mixture to provide a second product comprising propylene and a first recycle comprising butane; and recycling at least a portion of the first recycle to the one or more hydrocarbon feeds. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification