[특허]FCC apparatus with dual riser

FCC apparatus with dual riser 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01J-008/18 F27B-015/08
출원번호	US-0318347 (1999-05-25)
발명자 / 주소	Lomas David A.
출원인 / 주소	UOP LLC
대리인 / 주소	Tolomei
인용정보	피인용 횟수 : 35 인용 특허 : 12

초록 ▼

A process for the dual riser contacting of a primary feed and a secondary recycle feed fraction uses independent recovery of the separate streams from the riser cracking zone to improve the product yields and properties. Separate recovery segregates the upgraded recracked components from the rest of the primary cracked products. The benefits of selective of recracking are lost if the upgraded products from the recycle stream become recombined with the primary cracked product. The selectively recovered recycle feed may undergo hydroprocessing to hydrogenate, hydrocrack and/or hydrotreatment before recracking. The process can also make highly efficient use of the high residual activity in the catalyst that has contacted the secondary feed.

대표청구항 ▼

[ What is claimed is:] [1.]1. An apparatus for contacting a plurality of separate feed streams with fluidized particles in multiple contacting conduits, the apparatus comprising:a) a reactor vessel;b) a separation vessel located at least partially in the reactor vessel;c) a first contacting conduit extending into the separation vessel and defining a discharge opening located within the separation vessel and tangentially oriented for discharging a stream of particles and gases into the separation vessel and imparting a tangential velocity to the stream;d) a first particle supply conduit for supplying regenerated catalyst to the first contacting conduit;e) a second particle supply conduit for supplying partially spent catalyst to the first contacting conduit;f) a first feed supply conduit for injecting a first feed into the first contacting conduit;g) a particle outlet defined by the separation vessel for discharging particles from a lower portion of the separation vessel;h) a stripping zone located below the discharge opening in the separation vessel;i) a first gas recovery conduit defining a first outlet for withdrawing gaseous fluids from the separation vessel;j) a second contacting conduit located outside of the separation vessel defining a second discharge opening for discharging a stream of particles and gases;k) a third particle supply conduit for supplying regenerated catalyst to the second contacting conduit;l) a second feed supply conduit for injecting a second feed into the second contacting conduit;m) a separator located outside of the separation vessel for receiving the stream of particles and gases from the second discharge opening and supplying spent catalyst to said second supply conduit, said separator being isolated from fluid communication with said separation vessel, the isolation from fluid communication between said separator and said separation vessel being provided in part by a dense catalyst phase; andn) a second gas recovery conduit in fluid communication with the separator and defining a second outlet for withdrawing gaseous fluids from the separator and the second gas recovery conduit being isolated from fluid communication with the first gas recovery conduit, the isolation from fluid communication between the first and second gas recovery conduits being provided in part by a dense catalyst phase.

이 특허에 인용된 특허 (12)

Fahrig Robert J. (Lansing IL) Hinrichs Lansing M. (Chicago IL), Apparatus for the catalytic cracking of hydrocarbons.
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McKinney Claude O. (Munster IN), Apparatus for the fluidized catalytic cracking of hydrocarbon feedstocks.
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Lomas David A. (Barrington IL), FCC process with secondary dealkylation zone.
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Lomas David A. (Barrington IL), FCC separation method and apparatus with improved stripping.
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Mazzone Dominick N. (Wenonah NJ) Tabak Samual A. (Moorestown NJ) Timken Hye Kyung C. (Woodbury NJ), Gasoline-cycle oil upgrading process.
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Ellis Edward S. (Basking Ridge NJ) Gupta Ramesh (Berkeley Heights NJ) Bienstock Martin G. (Succasunna NJ), Integrated staged catalytic cracking and hydroprocessing process.
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Herbst Joseph A. (Turnersville NJ) Owen Hartley (Belle Mead NJ) Schipper Paul H. (Wilmington DE), Multiple riser fluidized catalytic cracking process utilizing a C₃-C₄ paraffin-rich co-feed.
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Owen Hartley (Belle Mead NJ) Schatz Klaus W. (Skillman NJ), Multistage stripper for FCC unit with improved catalyst separation.
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Melin Michel (Seneffe BEX) Grootjans Jacques F. (Leefdaal BEX), Process for the production of improved octane numbers gasolines.
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Derr ; Jr. W. Rodman (Vincentown NJ) Owens Peter J. (Mantua NJ) Sarli Michael S. (Haddonfield NJ), Production of gasoline and distillate fuels from light cycle oil.
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Breckenridge Lloyd L. (Philadelphia PA) Jorgensen Diane V. (Wilmington DE) Sapre Ajit V. (West Berlin NJ), Reduction of benzene content of reformate in a catalytic cracking unit.
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Herbst Joseph A. (Turnersville NJ) Owen Hartley (Belle Mead NJ) Schipper Paul H. (Wilmington DE), Upgrading naphtha in a multiple riser fluid catalytic cracking operation employing a catalyst mixture.
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이 특허를 인용한 특허 (35)

Stanley, Stephen J.; De Haan, Stephen; Kuzma, Jr., Peter Daniel, Absorber demethanizer for FCC process.
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De Haan, Stephen; Kuzma, Jr., Peter Daniel, Absorber demethanizer for methanol to olefins process.
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Fu, Xisheng; Hua, Xiuling, Additive composition for gearbox oil.
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da Silva Ferreira Alves, Joao Jorge; Rekoske, James E.; Nicholas, Christopher P., Apparatus for increasing weight of olefins.
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Couch, Keith A.; Gosling, Christopher D., Apparatus for preventing metal catalyzed coking.
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Leonard, Laura E.; Qafisheh, Jibreel A.; Mehlberg, Robert L., Apparatus for recovering products from two reactors.
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Gao, Xionghou; Sun, Shuhong; Wang, Lin; Pang, Xinmei; Wang, Zhifeng; Gao, Yongfu; Liu, Zhaoyong; Liu, Conghua; Gao, Jinsen; Wang, Gang; Zhang, Yanhui; Liu, Tao; Liu, Juanjuan, Catalytic cracking process for reducing sulfur content in gasoline and the device thereof.
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Lomas, David A.; Van Opdorp, Peter J., Direct feed/effluent heat exchange in fluid catalytic cracking.
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Eng,Curtis N.; Miller,Rik B., Dual riser FCC reactor process with light and mixed light/heavy feeds.
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Niccum, Phillip K.; Gbordzoe, Eusebius A., FCC process for converting C3/C4 feeds to olefins and aromatics.
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Lattner,James R., Fluid bed oxygenates to olefins reactor apparatus and process of controlling same.
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Mehlberg, Robert L.; Couch, Keith Allen; Hedrick, Brian W.; Fei, Zhihao, Fluid catalytic cracking system.
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Mo, Weijian; Hadjigeorge, Georghios Agamemnonons; Khouw, Frank Hsian Hok, Hydrocarbon cracking process for converting gas oil preferentially to middle distillate and lower olefins.
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Kabin,Jeffrey Alan; Coute,Nicolas P.; Vaughn,Stephen N., Method and apparatus for controlling effluent composition in oxygenates to olefins conversion.
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Mo, Weijian; Hadjigeorge, Georghios Agamemnonons; Khouw, Frank Hsian Hok, Method and apparatus for making a middle distillate product and lower olefins from a hydrocarbon feedstock.
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Eng, Curtis N.; Yang, Yonglin, Method for adjusting yields in a light feed FCC reactor.
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Bories, Marc; Leroy, Patrick; Echard, Michael; Gauthier, Thierry, Method for catalytic cracking with maximization of diesel base stocks.
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Fung,Shun C.; Hall,Richard B.; Kochkar,Hafedh; Strohmaier,Karl G.; Coute,Nicolas P.; Clem,Kenneth R., Method for stabilizing catalyst activity during MTO unit operation.
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Dubois,Jean Luc, Method for the production of acrylic acid from propane, in the absence of molecular oxygen.
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Avais, Fariha, Methods and systems for increasing production of middle distillate hydrocarbons from heavy hydrocarbon feed during fluid catalytic cracking.
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Kuechler,Keith Holroyd; Lattner,James R.; Coute,Nicolas P.; Smith,Jeffrey S.; Krieger,Justin Leonard, Multiple riser reactor with centralized catalyst return.
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Kuechler,Keith Holroyd; Lattner,James R.; Coute,Nicolas P.; Smith,Jeffrey S.; Krieger,Justin Leonard, Multiple riser reactor with centralized catalyst return.
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da Silva Ferreira Alves, Joao Jorge; Rekoske, James E.; Nicholas, Christopher P., Process for increasing weight of olefins.
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Couch, Keith A.; Gosling, Christopher D., Process for preventing metal catalyzed coking.
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Leonard, Laura E.; Qafisheh, Jibreel A.; Mehlberg, Robert L., Process for recovering products from two reactors.
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Kuechler,Keith H.; Lumgair,David R.; Coute,Nicolas P.; Chisholm,Paul N.; van Egmond,Cor F., Process for removing contaminants from a compressor intercooler in a methanol to olefin separation system.
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Liu, Yu; Schweizer, Jr., Albert E.; Malek, Andrzej M., Process to increase selectivity to ethylene in oxygenates-to-olefins conversions.
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Hanks, Patrick L.; Daage, Michel, Processing of feedstocks in separated reactor volumes.
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Kuechler,Keith H.; Lumgair,David R.; Coute,Nicolas P.; Chisholm,Paul N.; Van Egmond,Cor F., Processor for removing contaminants from a compressor in a methanol to olefin separation system.
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Brookhart,Walter R., Reactor with multiple risers and consolidated transport.
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Kuzma, Jr., Peter Daniel; De Haan, Stephen; Baumbach, Daniel Lee, Recovery of ethylene from methanol to olefins process.
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Wilson, Stephen T., Synthesis of SAPO-34 with essentially pure CHA framework.
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Wilson, Stephen T., Synthesis of SAPO-34 with essentially pure CHA framework.
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Hadjigeorge, George A.; Mo, Weijian; Schaverien, Colin John, Systems and methods for making a middle distillate product and lower olefins from a hydrocarbon feedstock.
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Subramanian, Anand; Niccum, Phillip K., Systems and methods for residue upgrading.
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FCC apparatus with dual riser 원문보기

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