Patent US4377762A successfully refreshed from Google Patents.
Patent FR985509A successfully refreshed from Google Patents.
US4891129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for solids-fluid separation employing swirl flow
Assignee: Shell USA Inc
•
Filing: 1986-09-15
•
Granted: 1990-01-02
•
Expires: 2006-09-15
Abstract
Abstract An apparatus suitable for solids-fluid (e.g. cracking catalyst/hydrocarbon vapor) separation is disclosed having a plurality of substantially vertical tubular elements disposed within a housing. Inlet means are arranged in the bottom section of the housing and communicate with the space between the tubular elements and the housing. A plurality of tubular fluid outlet means are provided, the lower sections of which are arranged substantially coaxially within the upper sections of said tubular elements and define annular spaces therebetween in which swirl imparting means are arranged. The upper sections of the tubular fluid outlet means cooperate with opening(s) in the upper section of the housing, and the lower sections of the tubular elements communicating with solids outlet means. The invention further relates to a process for separating fluid cracking catalyst particles from gaseous hydrocarbon conversion products and/or flue gases using said apparatus.
Inventors
- 👤 Peter H. Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:13
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18; B; B01; B01J; B01J8/00; B01J8/005; B01J8/0055; B04; B04C; B04C5/00; B04C5/24; B04C5/28; B04C9/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
115 words
A process for separating solid particles from fluid which comprises passing a mixture of solid particles and fluid upwardly into a space exterior to and between tubular elements and subsequently downwardly entering into annular spaces provided with swirl imparting means interior to the tubular elements, which annular spaces are defined between the upper sections of the tubular elements and the lower sections of tubular fluid outlet means arranged substantially coaxially within said upper sections, imparting a helical movement to the solids-fluid mixture in the tubular elements to separate solids from fluid, removing solids through the lower sections of the tubular elements and removing fluid upwardly through the upper sections of the tubular fluid outlet means.
Claim 2
Dependent Claim
115 words
A process for separating solid particles from fluid which comprises passing a mixture of solid particles and fluid upwardly into a space exterior to and between tubular elements and subsequently downwardly entering into annular spaces provided with swirl imparting means interior to the tubular elements, which annular spaces are defined between the upper sections of the tubular elements and the lower sections of tubular fluid outlet means arranged substantially coaxially within said upper sections, imparting a helical movement to the solids-fluid mixture in the tubular elements to separate solids from fluid, removing solids through the lower sections of the tubular elements and removing fluid upwardly through the upper sections of the tubular fluid outlet means.
Claim 3
Dependent Claim
18 words
A process according to claim 1 wherein fluid cracking catalyst particles are separated from gaseous hydrocarbon conversion products.
Claim 4
Dependent Claim
93 words
A process according to claim 2 wherein a mixture of solid cracking catalyst particles and hydrocarbon-containing gases emanating from a fluid catalytic cracking zone is pre-separated by passing said mixture upwardly and tangentially into a substantially spherical pre-separation zone wherein the mixture is subjected to a rotating movement in a substantially vertical plane, removing catalyst particles through an opening in the lower section of the pre-separation zone and passing catalyst fines-containing gases from the central section of the pre-separation zone upwardly through the space between the tubular elements of the next separation zone.
Claim 5
Dependent Claim
185 words
A process for separating solid particles from fluid comprising the following steps: passing a mixture of the solid particles and the fluid upwardly through an inlet substantially centered at the bottom of a housing into a space between a plurality of circumferentially arranged vertical tubular elements within the housing; deflecting the mixture against a fluid deflector which extends downwardly from a position substantially centered at the upper section of the housing for openly distributing the flow of the mixture evenly above the entrances to a plurality of annular spaces defined within the tubular elements; subsequently passing the mixture downwardly into the annular spaces which are provided with swirl imparting means between the upper sections of the tubular elements and the lower section of tubular fluid outlet means arranged substantially coaxially within the upper sections of the tubular elements; imparting a helical movement to the solids-fluid mixture in the tubular elements to separate solids from fluid; removing solids from the housing through the lower sections of the tubular elements; and removing fluid from the housing upwardly through the upper sections of the tubular fluid outlet means.
Claim 6
Dependent Claim
185 words
A process for separating solid particles from fluid comprising the following steps: passing a mixture of the solid particles and the fluid upwardly through an inlet substantially centered at the bottom of a housing into a space between a plurality of circumferentially arranged vertical tubular elements within the housing; deflecting the mixture against a fluid deflector which extends downwardly from a position substantially centered at the upper section of the housing for openly distributing the flow of the mixture evenly above the entrances to a plurality of annular spaces defined within the tubular elements; subsequently passing the mixture downwardly into the annular spaces which are provided with swirl imparting means between the upper sections of the tubular elements and the lower section of tubular fluid outlet means arranged substantially coaxially within the upper sections of the tubular elements; imparting a helical movement to the solids-fluid mixture in the tubular elements to separate solids from fluid; removing solids from the housing through the lower sections of the tubular elements; and removing fluid from the housing upwardly through the upper sections of the tubular fluid outlet means.
Claim 7
Dependent Claim
23 words
A process according to claim 4 wherein the solid particles are fluid cracking catalyst particles and the fluid is gaseous hydrocarbon conversion products.
Claim 8
Dependent Claim
98 words
A process according to claim 5 wherein the mixture of the cracking catalyst particles and gaseous hydrocarbon conversion products emanate from a fluid catalytic cracking zone, the process further comprising a pre-separation step comprising: passing said mixture upwardly and tangentially into a substantially spherical pre-separation zone; subjecting the mixture to a rotating movement in a substantially vertical plane; removing catalyst particles through an opening in the lower section of the pre-separation zone; and passing catalyst fines-containing gases from the central section of the pre-separation zone upwardly through the space between the tubular elements of the next separation zone.
References Cited (Backward Citations)
US373374A
Cited
US1953948A
Cited
US2223652A
Cited
US2372514A
Cited
US2399509A
Cited
GB568298A
Cited
US2511387A
Cited
US2553175A
Cited
US2667944A
Cited
DE851483C
Cited
DE875933C
Cited
US2718491A
Cited
US2888096A
Cited
US2985516A
Cited
US2901420A
Cited
US3137133A
Cited
DE1607746A1
Cited
US3710558A
Cited
US3672502A
Cited
US3769781A
Cited
US3802164A
Cited
US3959123A
Cited
SU671857A1
Cited
US4148721A
Cited
US4206174A
Cited
US4378234A
Cited
US4313910A
Cited
DE3009214A1
Cited
US4448753A
Cited
US4404095A
Cited
US4426212A
Cited
US4397738A
Cited
SU1060231A1
Cited
US4455220A
Cited
SU1150041A1
Cited
US4588558A
Cited
US4629552A
Cited
US4572780A
Cited
US4666674A
Cited
EP0222436A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-01 | 1993-07-03 | 1994-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-01 | 1997-07-03 | 1998-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-01 | 2001-07-03 | 2002-01-02 | $7700.00 | Window Closed / Lapsed |