Patent US3213575A successfully refreshed from Google Patents.
Patent US5064622A successfully refreshed from Google Patents.
US5064622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of stacked FCC unit
Assignee: Honeywell UOP LLC
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Filing: 1989-08-18
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Granted: 1991-11-12
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Expires: 2009-08-18
Abstract
Abstract Modern processes and arrangements for FCC processes can be obtained using a stacked FCC reactor-regenerator arrangement. These processes and arrangements use a stacked FCC unit having a bottom regeneration vessel, a superadjacent reactor vessel, and a stripping vessel laterally offset from and in open communication with the reactor vessel to make a two-stage regenerator having a lower first stage regeneration, an upper second stage of regeneration, and a catalyst cooler for removing feed from the catalyst. The process and arrangement makes complete use of the three existing vessels in the stacked reactor-regenerator arrangement by changing the function of the upper reactor vessel and the stripping vessel and adding a reactor vessel to the side of the stacked FCC arrangement. Therefore, apart from the addition of the new reactor only relatively minor modifications are necessary to more fully utilize stacked FCC reactor-regenerator arrangements.
Inventors
- 👤 Carlos A. Cabrera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:47
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/1845; B01J8/1863; C; C10; C10G; C10G11/00; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
430 words
An apparatus for converting a hydrocarbon feed in a reaction zone using fluidized catalyst particles and continuously regenerating said catalyst particles after contact with said hydrocarbon feed, said apparatus comprising: (a) a reactor riser conduit for receiving a hydrocarbon feed, said riser conduit having an upstream end in communication with a regenerated catalyst conduit to transfer catalyst particles to said riser conduit and downstream end for discharging a mixture of said hydrocarbon and catalyst particles; (b) a reactor vessel in communication with said downstream end of said riser conduit, said reactor vessel enclosing means for at least partially separating said hydrocarbons from said catalyst particles; (c) a stripping vessel in open communication with a lower portion of said reactor vessel for collecting catalyst particles from said reactor vessel; (d) a spent catalyst conduit having an inlet end in communication with a lower portion of said stripping vessel and an outlet end; (c) a stacked regeneration tower comprising a lower regeneration vessel and upper regeneration vessel located superadjacent to and concentrically supported from said lower regeneration vessel, said upper regeneration vessel having a smaller diameter than said lower regeneration vessel and said outlet end of said spent catalyst conduit communicating with said lower regeneration vessel to receive catalyst particles; (f) means for distributing an oxygen-containing gas over a lower section of said lower regeneration vessel; (g) a lower catalyst conduit for withdrawing catalyst particles from said lower regeneration vessel having at least a lower portion positioned external to said lower regeneration vessel; (h) a regenerator riser conduit communicating with the lower end of said lower catalyst conduit for receiving catalyst therefrom and having a lower end positioned external to said upper and lower regeneration vessels and an upper end in communication with said upper regeneration vessel to discharge catalyst particles therein and at least a portion of the external wall of said regenerator riser provides means for cooling catalyst particles; (i) means for injecting an oxygen-containing gas into a lower portion of said regenerator riser conduit; (j) means for creating a draft along at least a portion of the external wall of said regenerator riser and cooling catalyst passing from the lower regeneration vessel to the upper regeneration vessel; and (k) a first cooler vessel horizontally offset from and in direct communication with said upper regeneration vessel for circulating catalyst particles between said upper regeneration vessel and said cooler vessel, said cooler vessel having means for indirectly contacting said catalyst particles therein with a cooling fluid and means for distributing a fluidizing medium over a lower portion of said cooler vessel.
Claim 2
Independent Claim
430 words
An apparatus for converting a hydrocarbon feed in a reaction zone using fluidized catalyst particles and continuously regenerating said catalyst particles after contact with said hydrocarbon feed, said apparatus comprising: (a) a reactor riser conduit for receiving a hydrocarbon feed, said riser conduit having an upstream end in communication with a regenerated catalyst conduit to transfer catalyst particles to said riser conduit and downstream end for discharging a mixture of said hydrocarbon and catalyst particles; (b) a reactor vessel in communication with said downstream end of said riser conduit, said reactor vessel enclosing means for at least partially separating said hydrocarbons from said catalyst particles; (c) a stripping vessel in open communication with a lower portion of said reactor vessel for collecting catalyst particles from said reactor vessel; (d) a spent catalyst conduit having an inlet end in communication with a lower portion of said stripping vessel and an outlet end; (c) a stacked regeneration tower comprising a lower regeneration vessel and upper regeneration vessel located superadjacent to and concentrically supported from said lower regeneration vessel, said upper regeneration vessel having a smaller diameter than said lower regeneration vessel and said outlet end of said spent catalyst conduit communicating with said lower regeneration vessel to receive catalyst particles; (f) means for distributing an oxygen-containing gas over a lower section of said lower regeneration vessel; (g) a lower catalyst conduit for withdrawing catalyst particles from said lower regeneration vessel having at least a lower portion positioned external to said lower regeneration vessel; (h) a regenerator riser conduit communicating with the lower end of said lower catalyst conduit for receiving catalyst therefrom and having a lower end positioned external to said upper and lower regeneration vessels and an upper end in communication with said upper regeneration vessel to discharge catalyst particles therein and at least a portion of the external wall of said regenerator riser provides means for cooling catalyst particles; (i) means for injecting an oxygen-containing gas into a lower portion of said regenerator riser conduit; (j) means for creating a draft along at least a portion of the external wall of said regenerator riser and cooling catalyst passing from the lower regeneration vessel to the upper regeneration vessel; and (k) a first cooler vessel horizontally offset from and in direct communication with said upper regeneration vessel for circulating catalyst particles between said upper regeneration vessel and said cooler vessel, said cooler vessel having means for indirectly contacting said catalyst particles therein with a cooling fluid and means for distributing a fluidizing medium over a lower portion of said cooler vessel.
Claim 3
Independent Claim
419 words
An apparatus for converting a hydrocarbon feed in a reaction zone using fluidized catalyst particles and continuously regenerating said catalyst particles after contact with said hydrocarbon feed, said apparatus comprising: (a) a reactor riser conduit for receiving a hydrocarbon feed, said riser conduit having an upstream end in communication with a regenerated catalyst conduit to transfer catalyst particles to said riser conduit and downstream end for discharging a mixture of said hydrocarbon and catalyst particles; (b) a reactor vessel in communication with said downstream end of said riser conduit, said reactor vessel enclosing means for at least partially separating said hydrocarbons from said catalyst particles; (c) a stripping vessel in open communication with a lower portion of said reactor vessel for collecting catalyst particles from said reactor vessel; (d) a spent catalyst conduit having an inlet end in communication with a lower portion of said stripping vessel and an outlet end; (e) a stacked regeneration tower comprising a lower regeneration vessel and upper regeneration vessel located superadjacent to and concentrically supported from said lower vessel, said upper vessel having a smaller diameter than said lower vessel and said outlet end of said spent catalyst conduit communicating with said lower vessel to receive catalyst particles; (f) means for distributing an oxygen-containing gas over a lower section of said lower regeneration vessel; (g) a lower catalyst conduit for withdrawing catalyst particles from said lower regeneration vessel having at least a lower portion positioned external to said lower vessel; (h) a regenerator riser conduit communicating with the lower end of said lower catalyst conduit for receiving catalyst therefrom and having a lower end positioned external to said upper and lower regeneration vessels and an upper end in communication with said upper regeneration vessel to discharge catalyst particles therein and at least a portion of the external wall of said regenerator riser provides means for cooling catalyst particles; (i) means for injecting an oxygen-containing gas into a lower portion of said regenerator riser conduit; (j) a first cooler vessel horizontally offset from and in direct communication with said upper regeneration vessel for circulating catalyst particles from said upper regeneration vessel to said cooler vessel, said cooler vessel having means for indirectly contacting said catalyst particles therein with a cooling fluid and means for distributing a fluidizing medium over a lower portion of said cooler vessel; and (k) a second cooling vessel located along the flow path between said lower regeneration vessel and said upper regeneration vessel to cool the catalyst particles passing therethrough.
Claim 4
Independent Claim
419 words
An apparatus for converting a hydrocarbon feed in a reaction zone using fluidized catalyst particles and continuously regenerating said catalyst particles after contact with said hydrocarbon feed, said apparatus comprising: (a) a reactor riser conduit for receiving a hydrocarbon feed, said riser conduit having an upstream end in communication with a regenerated catalyst conduit to transfer catalyst particles to said riser conduit and downstream end for discharging a mixture of said hydrocarbon and catalyst particles; (b) a reactor vessel in communication with said downstream end of said riser conduit, said reactor vessel enclosing means for at least partially separating said hydrocarbons from said catalyst particles; (c) a stripping vessel in open communication with a lower portion of said reactor vessel for collecting catalyst particles from said reactor vessel; (d) a spent catalyst conduit having an inlet end in communication with a lower portion of said stripping vessel and an outlet end; (e) a stacked regeneration tower comprising a lower regeneration vessel and upper regeneration vessel located superadjacent to and concentrically supported from said lower vessel, said upper vessel having a smaller diameter than said lower vessel and said outlet end of said spent catalyst conduit communicating with said lower vessel to receive catalyst particles; (f) means for distributing an oxygen-containing gas over a lower section of said lower regeneration vessel; (g) a lower catalyst conduit for withdrawing catalyst particles from said lower regeneration vessel having at least a lower portion positioned external to said lower vessel; (h) a regenerator riser conduit communicating with the lower end of said lower catalyst conduit for receiving catalyst therefrom and having a lower end positioned external to said upper and lower regeneration vessels and an upper end in communication with said upper regeneration vessel to discharge catalyst particles therein and at least a portion of the external wall of said regenerator riser provides means for cooling catalyst particles; (i) means for injecting an oxygen-containing gas into a lower portion of said regenerator riser conduit; (j) a first cooler vessel horizontally offset from and in direct communication with said upper regeneration vessel for circulating catalyst particles from said upper regeneration vessel to said cooler vessel, said cooler vessel having means for indirectly contacting said catalyst particles therein with a cooling fluid and means for distributing a fluidizing medium over a lower portion of said cooler vessel; and (k) a second cooling vessel located along the flow path between said lower regeneration vessel and said upper regeneration vessel to cool the catalyst particles passing therethrough.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-11 | 1995-05-13 | 1995-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-11 | 1999-05-13 | 1999-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-11 | 2003-05-13 | 2003-11-12 | $7700.00 | Window Closed / Lapsed |