Patent EP0168916A1 successfully refreshed from Google Patents.
EP0168916A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Fluidized catalytic cracking process
Assignee: Mobil Oil AS
•
Filing: 1985-05-02
•
Granted: —
•
Expires: 2005-05-02
Abstract
Abstract Process and apparatus for the fluid catalytic (FCC) of hydrocarbons. <??>The output of a reactor riser zone (3) is fed a riser cyclone separator (5), a primary cyclone separator (7), and secondary cyclone separators (9), connected in series within a single reactor vessel (1). The riser cyclone separator is connected to the primary cyclone separator by a conduit (121, 123), which prevents random post-riser thermal cracking of the hydrocarbons after they exit the riser cyclone separator. An opening in the conduit (127) is provided to allow stripping gas to enter the conduit. Catalyst separated in the riser cyclone separator can drop through a riser cyclone dipleg (124) and can then pass through a dipleg seal which comprises a seal pot or catalyst held around the dipleg. Steam may be directed into the riser cyclone separator to improve the separation of hydrocarbons from catalyst.
Inventors
- 👤 Hartley Owen
- 👤 James Henry Haddad
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 05:30
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/005; B01J8/0055; C; C10; C10G; C10G11/00; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
199 words
An apparatus for the fluid catalytic cracking of a hydrocarbon feed comprising: a riser conversion zone comprising a vertically disposed elongated tubular conduit having an upstream end and a downstream end, said downstream end terminating within a reactor vessel; a riser inlet for introduction of a suspension of hydrocarbon feed and catalyst in the upstream end of said riser and a riser outlet for removal of cracked hydrocarbon feed and deactivated catalyst at the downstream end of said riser; a riser cyclone separator having an inlet and an outlet, said inlet connective with said riser outlet via a first conduit, and said outlet connective with a primary cyclone separator having an inlet connective with said riser cyclone outlet via a second conduit and having an outlet; a cracked hydrocarbon vessel outlet connective with said primary cyclone separator outlet, and said reactor vessel; a catalyst stripping zone; means for conducting catalyst from said riser and primary cyclone separator to said catalyst stripping zone; and means for passing at least a portion of a stripping gas from said catalyst stripping zone into a mixture of cracked hydrocarbons and catalyst at a location between said riser outlet and said primary cyclone inlet.
Claim 2
Independent Claim
199 words
An apparatus for the fluid catalytic cracking of a hydrocarbon feed comprising: a riser conversion zone comprising a vertically disposed elongated tubular conduit having an upstream end and a downstream end, said downstream end terminating within a reactor vessel; a riser inlet for introduction of a suspension of hydrocarbon feed and catalyst in the upstream end of said riser and a riser outlet for removal of cracked hydrocarbon feed and deactivated catalyst at the downstream end of said riser; a riser cyclone separator having an inlet and an outlet, said inlet connective with said riser outlet via a first conduit, and said outlet connective with a primary cyclone separator having an inlet connective with said riser cyclone outlet via a second conduit and having an outlet; a cracked hydrocarbon vessel outlet connective with said primary cyclone separator outlet, and said reactor vessel; a catalyst stripping zone; means for conducting catalyst from said riser and primary cyclone separator to said catalyst stripping zone; and means for passing at least a portion of a stripping gas from said catalyst stripping zone into a mixture of cracked hydrocarbons and catalyst at a location between said riser outlet and said primary cyclone inlet.
Claim 3
Dependent Claim
56 words
Apparatus of Claim 1, wherein said second conduit comprises an outlet duct connected to said riser cyclone and an inlet duct connected to the primary cyclone, said inlet duct being axially aligned with and spaced from said outlet, the spacing between said outlet and inlet ducts defining a port for introducing stripping gas into said mixture.
Claim 4
Dependent Claim
15 words
Apparatus of Claim 2, wherein said outlet and inlet ducts have the same opening diameter.
Claim 5
Dependent Claim
15 words
Apparatus of Claim 2 or 3, wherein said outlet and inlet ducts are arranged horizontally.
Claim 6
Dependent Claim
17 words
Apparatus of Claim 1, wherein said means for passing stripping gas comprises a riser cyclone separator dipleg.
Claim 7
Dependent Claim
33 words
Apparatus of any of Claims 1 to 5, wherein said means for passing a stripping gas comprises at least one port in said first conduit open to the interior of said reactor vessel.
Claim 8
Dependent Claim
29 words
Apparatus of Claim 6, wherein said port is formed in an annulus of said first conduit provided between a larger diameter conduit portion and a smaller diameter conduit portion.
Claim 9
Dependent Claim
14 words
Apparatus of Claim 7, wherein a plurality of ports is spaced about said annulus.
Claim 10
Dependent Claim
32 words
Apparatus of any of Claims 1 to 8, wherein said riser cyclone separator includes a steam feed line located in a side wall of a lower portion of said riser cyclone separator.
Claim 11
Dependent Claim
202 words
A process for the fluid catalytic cracking of a hydrocarbon feed comprising the steps of: passing a mixture, as a suspension, of said hydrocarbon feed and a catalyst through a riser conversion zone contained within a reactor vessel and cracking said hydrocarbon feed in the riser conversion zone; passing the mixture from the riser conversion zone to a riser cyclone separator located in said reactor vessel through a first conduit; separating at least a portion of the catalyst from the mixture in the riser cyclone separator; passing a gaseous effluent from the riser cyclone separator to a primary cyclone separator located in said reactor vessel through a second conduit; passing the separated catalyst from the riser cyclone separator and primary cyclone separator to a catalyst stripping zone located within the reactor vessel to remove hydrocarbons entrained with the catalyst; passing at least a portion of a stripping gas in said reactor vessel from the catalyst stripping zone into at least one of said conduit and a dipleg of said riser cyclone separator; passing the cracked hydrocarbons, as an effluent from said primary cyclone separator, to a downstream fractionation apparatus; and passing the separated catalyst from said stripping zone to a regeneration vessel.
Claim 12
Dependent Claim
202 words
A process for the fluid catalytic cracking of a hydrocarbon feed comprising the steps of: passing a mixture, as a suspension, of said hydrocarbon feed and a catalyst through a riser conversion zone contained within a reactor vessel and cracking said hydrocarbon feed in the riser conversion zone; passing the mixture from the riser conversion zone to a riser cyclone separator located in said reactor vessel through a first conduit; separating at least a portion of the catalyst from the mixture in the riser cyclone separator; passing a gaseous effluent from the riser cyclone separator to a primary cyclone separator located in said reactor vessel through a second conduit; passing the separated catalyst from the riser cyclone separator and primary cyclone separator to a catalyst stripping zone located within the reactor vessel to remove hydrocarbons entrained with the catalyst; passing at least a portion of a stripping gas in said reactor vessel from the catalyst stripping zone into at least one of said conduit and a dipleg of said riser cyclone separator; passing the cracked hydrocarbons, as an effluent from said primary cyclone separator, to a downstream fractionation apparatus; and passing the separated catalyst from said stripping zone to a regeneration vessel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.