Patent US5643537A successfully refreshed from Google Patents.
US5643537A
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FCC process and apparatus with contained vortex third stage separator
Assignee: Mobil Oil AS
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Filing: 1995-09-26
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Granted: 1997-07-01
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Expires: 2015-09-26
Abstract
Abstract Vertical, small diameter cyclones are disclosed. Gas and fines are added tangentially or axially around a clean vapor outlet tube in a cylindrical cyclone. A vortex of solids and some gas passes into a contiguous and axially aligned cylindrical vortex containment means from which solids are withdrawn via a vertical slot in a sidewall of the containment means. 0-5 micron particle removal is enhanced. An FCC process uses the cyclones as a third stage separator.
Inventors
- 👤 Michael F. Raterman
- 👤 Christopher G. Smalley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:13
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/12; B01J; B01J8/00; B01J8/005; B01J8/0055; B04; B04C; B04C5/00; B04C5/08; B04C5/081; B04C5/14; B04C5/185; B04C5/187; B04C5/24; B04C5/28; C; C10; C10G; C10G11/00; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
249 words
A vertical cyclone separator comprising: a primary cylindrical cyclone body having a diameter and a longitudinal axis disposed vertically or within 30° of vertical, said primary cyclone body having: an open end portion having a vapor inlet for a vapor stream and entrained solids; a cylindrical vapor outlet tube in said open end portion having an inlet extending into said primary cylindrical cyclone body and a vapor outlet tube longitudinal axis aligned with said longitudinal axis of said primary cylindrical cyclone body; a vortex outlet at an opposite end of said primary cylindrical cyclone body for vapor and entrained solids, said vortex outlet comprising a circular opening having a center in axial alignment with said vapor outlet tube, and wherein said vortex outlet has a diameter no greater than the diameter of said primary cylindrical cyclone body; a vortex-containment cylindrical body having cylindrical sidewalls, a length and having a diameter no greater than the diameter of said primary cyclone body at the inlet, said vortex-containment cylindrical body having a longitudinal axis axially aligned with said primary cyclone body longitudinal axis and comprising: an open end connective with said vortex outlet of said primary cyclone body for admission of a vortex of gas and entrained solids; a sealed end portion located at an opposing end of said cylindrical body from said open end; and a solids and gas outlet slot in a lower portion of a sidewall of said vortex cylinder parallel to the axis of said vortex-containment cylindrical body.
Claim 2
Dependent Claim
249 words
A vertical cyclone separator comprising: a primary cylindrical cyclone body having a diameter and a longitudinal axis disposed vertically or within 30° of vertical, said primary cyclone body having: an open end portion having a vapor inlet for a vapor stream and entrained solids; a cylindrical vapor outlet tube in said open end portion having an inlet extending into said primary cylindrical cyclone body and a vapor outlet tube longitudinal axis aligned with said longitudinal axis of said primary cylindrical cyclone body; a vortex outlet at an opposite end of said primary cylindrical cyclone body for vapor and entrained solids, said vortex outlet comprising a circular opening having a center in axial alignment with said vapor outlet tube, and wherein said vortex outlet has a diameter no greater than the diameter of said primary cylindrical cyclone body; a vortex-containment cylindrical body having cylindrical sidewalls, a length and having a diameter no greater than the diameter of said primary cyclone body at the inlet, said vortex-containment cylindrical body having a longitudinal axis axially aligned with said primary cyclone body longitudinal axis and comprising: an open end connective with said vortex outlet of said primary cyclone body for admission of a vortex of gas and entrained solids; a sealed end portion located at an opposing end of said cylindrical body from said open end; and a solids and gas outlet slot in a lower portion of a sidewall of said vortex cylinder parallel to the axis of said vortex-containment cylindrical body.
Claim 3
Dependent Claim
21 words
The cyclone of claim 1 said slot has a length at least 50% of the length of said vortex-containment cylindrical body.
Claim 4
Dependent Claim
19 words
The cyclone of claim 1 said slot has a length equal to the length of said vortex-containment cylindrical body.
Claim 5
Dependent Claim
23 words
The cyclone of claim 1 wherein said slot has beveled edges for tangential removal of solids and gas from said vortex-containment cylindrical body.
Claim 6
Dependent Claim
18 words
The cyclone of claim 1 wherein said primary cylindrical body and said vortex containment body are mounted vertically.
Claim 7
Dependent Claim
22 words
The cyclone of claim 1 wherein said open end portion comprises a tangential vapor inlet for a vapor stream and entrained solids.
Claim 8
Dependent Claim
22 words
The cyclone of claim 1 wherein said open end portion comprises an axial vapor inlet for a vapor stream and entrained solids.
Claim 9
Dependent Claim
29 words
The cyclone of claim 6 wherein the diameter of said vortex containment body is 100 to 150% of the diameter of said primary cyclone body at the tangential inlet.
Claim 10
Dependent Claim
20 words
The cyclone of claim 1 wherein a truncated conical section connects said primary cyclone body to said vortex containment body.
Claim 11
Dependent Claim
28 words
The cyclone of claim 1 wherein the vortex containment body has a length at least equal to the length of the vapor outlet within the primary cyclone body.
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) | 2000-06-30 | 2000-12-30 | 2001-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-30 | 2004-12-30 | 2005-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-30 | 2008-12-30 | 2009-07-01 | $7700.00 | Window Closed / Lapsed |