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US 2012/0071701 A1Published application
Integration of Cyclic Dehydrogenation Process with FCC for Dehydrogenation of Refinery Paraffins
AssigneeUop LLC
InventorBryan K. Glover
Life of this patent
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Abstract
A process for increasing light olefin yields from the fluidized catalytic cracking process. The process combines small units to treat the paraffinic components in the product streams from the fluidized cracking process. The paraffins are dehydrogenated and light olefins are separated. Heavier olefins are passed to an olefin cracking unit for increasing the yields of ethylene and propylene.
Claims25
A process for converting a hydrocarbon stream to light olefins, comprising:
- passing a hydrocarbon stream to a fluid catalytic cracking (FCC) unit, thereby creating a cracked effluent stream;
- separating the cracked effluent stream, thereby creating a first process stream, and a second process stream comprising olefins and paraffins in the C4 to C12 range;
- passing the second stream to an olefin conversion reactor, thereby creating a conversion product stream with an increased content of ethylene and propylene;
- separating the conversion product stream into an olefin product stream, and a light olefin depleted stream;
- passing the light olefin depleted stream to a dehydrogenation reactor, thereby creating a third process stream with an increased level of olefins;
- and
- passing the third process stream to the olefin conversion reactor.
4 more elements
A process for converting a hydrocarbon stream to light olefins, comprising:
- passing a hydrocarbon stream to a fluid catalytic cracking (FCC) unit, thereby creating a cracked effluent stream;
- separating the cracked effluent stream, thereby creating a first process stream, and a second process stream comprising olefins and paraffins in the C4 to C12 range;
- passing the second stream to an olefin cracking reactor, thereby creating a conversion product stream comprising olefins;
- separating the conversion product stream into an olefin product stream, and an olefin depleted stream;
- passing the olefin depleted stream to a dehydrogenation reactor, thereby creating a third process stream having an increased content of ethylene and propylene;
- separating the third process stream into a fourth process stream comprising C5+ hydrocarbons, and a fifth process stream comprising butanes and butenes;
- passing the fourth process stream to the olefin cracking reactor and passing the fifth process stream to a second conversion reactor.
4 more elements
Dependencies are inferred from the claim text.