US4033727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separator ring in fixed bed radial flow catalytic reactor
Assignee: Phillips Petroleum Co
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Filing: 1976-07-06
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Granted: 1977-07-05
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Expires: 1996-07-06
Abstract
Abstract A generally ring-like baffle is located in the bottom of a radial flow catalytic reactor around the central apertured product removal conduit. The annular space between the removal conduit and the baffle is partially filled with solid catalyst support. Above the catalyst support is the catalyst. This prevents feedstock from either bypassing the catalyst completely in the area adjacent the bottom of the reactor or forming hot spots as a result of the normally low rate of flow travel in this section of the reactor.
Inventors
- 👤 Lucien H. Vautrain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:10
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/0207; B01J8/0214; B01J8/008; B01J8/0085; C; C10; C10G; C10G35/00; C10G35/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
175 words
In a vertically disposed reactor comprising: side walls, a top wall and a bottom wall; an inlet opening at an upper end thereof; an annulus communicating with said inlet opening, said annulus being formed by said side walls and a perforated means spaced inwardly from said side walls; a centrally disposed apertured withdrawal conduit having an outlet opening at a lower end thereof; the improvement comprising an annular separator ring extending upwardly from said bottom wall of said reactor between said side wall and said central apertured withdrawal conduit to a level within the range of 0 to 3 inches below a lowermost row of apertures in said central apertured withdrawal conduit, an annular space defined by said separator ring and said side wall being filled with catalyst support to a level essentially coextensive with a top of said separator ring and an annular space defined by said separator ring and said central apertured withdrawal conduit being partially filled with catalyst support, catalyst being present between said centrally disposed withdrawal conduit and said perforated means.
Claim 2
Dependent Claim
175 words
In a vertically disposed reactor comprising: side walls, a top wall and a bottom wall; an inlet opening at an upper end thereof; an annulus communicating with said inlet opening, said annulus being formed by said side walls and a perforated means spaced inwardly from said side walls; a centrally disposed apertured withdrawal conduit having an outlet opening at a lower end thereof; the improvement comprising an annular separator ring extending upwardly from said bottom wall of said reactor between said side wall and said central apertured withdrawal conduit to a level within the range of 0 to 3 inches below a lowermost row of apertures in said central apertured withdrawal conduit, an annular space defined by said separator ring and said side wall being filled with catalyst support to a level essentially coextensive with a top of said separator ring and an annular space defined by said separator ring and said central apertured withdrawal conduit being partially filled with catalyst support, catalyst being present between said centrally disposed withdrawal conduit and said perforated means.
Claim 3
Dependent Claim
34 words
Apparatus according to claim 1 wherein said separator ring extends to a level within the range of about 1 to 2 inches below said lowermost row of apertures in said central apertured withdrawal conduit.
Claim 4
Dependent Claim
25 words
An apparatus according to claim 2 wherein said annular separator ring extends up a distance of 0.1 to 0.5 times a diameter of said reactor.
Claim 5
Dependent Claim
167 words
In a vertically disposed reactor comprising: side walls, a top wall and a bottom wall; an inlet opening at an upper end thereof; an annulus communicating with said inlet opening, said annulus being formed by said side walls and a perforated means spaced inwardly from said side walls; a centrally disposed apertured withdrawal conduit having an outlet opening at a lower end thereof; the improvement comprising an annular separator ring extending upwardly from said bottom wall of said reactor between said side wall and said central apertured withdrawal conduit a distance within the range of 0.1 to 0.5 times a diameter of said reactor, an annular space defined by said separator ring and said side wall being filled with catalyst support to a level essentially coextensive with a top of said separator ring and an annular space defined by said separator ring and said central apertured withdrawal conduit being partially filled with catalyst support, catalyst being present between said centrally disposed withdrawal conduit and said perforated means.
Claim 6
Dependent Claim
167 words
In a vertically disposed reactor comprising: side walls, a top wall and a bottom wall; an inlet opening at an upper end thereof; an annulus communicating with said inlet opening, said annulus being formed by said side walls and a perforated means spaced inwardly from said side walls; a centrally disposed apertured withdrawal conduit having an outlet opening at a lower end thereof; the improvement comprising an annular separator ring extending upwardly from said bottom wall of said reactor between said side wall and said central apertured withdrawal conduit a distance within the range of 0.1 to 0.5 times a diameter of said reactor, an annular space defined by said separator ring and said side wall being filled with catalyst support to a level essentially coextensive with a top of said separator ring and an annular space defined by said separator ring and said central apertured withdrawal conduit being partially filled with catalyst support, catalyst being present between said centrally disposed withdrawal conduit and said perforated means.
Claim 7
Dependent Claim
35 words
An apparatus according to claim 4 wherein said annular separator ring extends up to a level within the range of 0 to 3 inches below a lowermost row of apertures in said central withdrawal conduit.
Claim 8
Dependent Claim
11 words
Apparatus according to claim 5 wherein said catalyst support is firebrick.
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) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |