US5393315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immersed heat exchanger in an integral cylindrical cyclone and loopseal
Assignee: Tampella Power Corp
•
Filing: 1994-07-28
•
Granted: 1995-02-28
•
Expires: 2014-07-28
Abstract
Abstract A cyclone separator for a solids-laden process gas from a fluidized bed boiler or reactor also provides a pressure seal and heat exchanger surfaces for the reactor or boiler. The cyclone includes a cylindrical main housing with a longitudinal axis. The housing is made of membrane wall construction. A portion of the tubes are bent outwardly to form an inlet which communicates with the main housing for receiving the solids-laden process gas from the boiler or reactor. Solids are separated from the solids-laden process gas as they swirl together in the main housing of the cyclone separator. A partition wall is disposed at the lower section of the main housing around the longitudinal axis for defining an outer chamber and an inner chamber adjacent the outer chamber. Gas is provided to the outer and inner chambers for creating fluidized beds of the solids in the outer and inner chambers. Solids are passed from the inner chamber to the outer chamber through an underflow port in the partition wall. Solids exit the main housing from an overflow port which communicates with the reactor. Immersed heat exchanger surfaces are provided in the outer chamber for removing heat therefrom.
Inventors
- 👤 Michael G. Alliston
- 👤 Brian T. Sinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:55
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/12; B04; B04C; B04C5/00; B04C5/08; B04C5/14; B04C5/18; B04C5/20; F; F22; F22B; F22B31/00; F22B31/0007; F22B31/0084; F23; F23C; F23C10/00; F23C10/02; F23C10/04; F23C10/08; F23C10/10; F23C2206/00; F23C2206/10; F23C2206/103
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
188 words
An arrangement for separating solids from a process gas produced in a heat containing, solids-processing device, for providing a pressure seal for the device and for removing heat from the device, the arrangement comprising: a main housing having a longitudinal axis; an inlet communicating with the main housing for receiving a solids-laden process gas in a direction for separating the solids from the gas; a partition wall in the main housing for separating an outer chamber from an inner chamber near a lower end of and within the main housing; means for channeling solids falling in the main housing, into the inner chamber; first passage means for passing solids between the inner and outer chambers; fluidizing means for providing fluidizing air to the outer and the inner chambers for creating fluidized beds of solids in the outer and the inner chambers; second passage means for passing solids from the outer chamber, out of the main housing and back to the solids-processing device; and an immersed heat exchanger in at least the outer chamber for removing heat from at least the fluidized bed of solids in the outer chamber.
Claim 2
Dependent Claim
188 words
An arrangement for separating solids from a process gas produced in a heat containing, solids-processing device, for providing a pressure seal for the device and for removing heat from the device, the arrangement comprising: a main housing having a longitudinal axis; an inlet communicating with the main housing for receiving a solids-laden process gas in a direction for separating the solids from the gas; a partition wall in the main housing for separating an outer chamber from an inner chamber near a lower end of and within the main housing; means for channeling solids falling in the main housing, into the inner chamber; first passage means for passing solids between the inner and outer chambers; fluidizing means for providing fluidizing air to the outer and the inner chambers for creating fluidized beds of solids in the outer and the inner chambers; second passage means for passing solids from the outer chamber, out of the main housing and back to the solids-processing device; and an immersed heat exchanger in at least the outer chamber for removing heat from at least the fluidized bed of solids in the outer chamber.
Claim 3
Dependent Claim
33 words
The arrangement according to claim 1, including an inner cylinder adjacent and bounding the inner chamber around the longitudinal axis and extending along a length of the longitudinal axis within the main housing.
Claim 4
Dependent Claim
25 words
The arrangement according to claim 2, wherein the inner cylinder includes a floor forming part of said means for channeling solids into the inner chamber.
Claim 5
Dependent Claim
11 words
The arrangement according to claim 3, wherein the floor is conical.
Claim 6
Dependent Claim
35 words
The arrangement according to claim 1, wherein the second passage means for passing solids comprises an overflow outlet communicating with the outer chamber of the main housing at a lower end of the main housing.
Claim 7
Dependent Claim
41 words
The arrangement according to claim 5, wherein the first passage means for passing solids comprises an underflow port in the partition wall between the inner and outer chambers for allowing solids to pass from the inner chamber to the outer chamber.
Claim 8
Dependent Claim
35 words
The arrangement according to claim 1, wherein the main housing comprises a membrane wall, the immersed heat exchanger surface being in the outer chamber and comprising a plurality of tube bundles in the outer chamber.
Claim 9
Dependent Claim
40 words
The arrangement according to claim 7, including an inner cylinder adjacent and bounding the inner chamber around the longitudinal axis and extending along a length of the longitudinal axis within the main housing, the inner cylinder comprising a membrane wall.
Claim 10
Dependent Claim
28 words
The arrangement according to claim 8, including a header communicating with the tubes of the membrane wall of the main housing at each end of the main housing.
Claim 11
Dependent Claim
25 words
The arrangement according to claim 9, including a vortex finder formed by tubes from the inner cylinder near an upper end of the main housing.
Claim 12
Dependent Claim
27 words
The arrangements according to claim 10, wherein the main housing and the vortex finder comprise a vortex space at an upper end thereof adjacent to the inlet.
Claim 13
Dependent Claim
32 words
The arrangement according to claim 11, wherein the inner cylinder includes a floor forming part of said means for channeling solids into the inner chamber, the inner cylinder extending above the floor.
Claim 14
Dependent Claim
33 words
The arrangement according to claim 12, wherein the fluidizing means for providing fluidizing air comprises a plenum below each of the inner and outer chambers at a lower end of the main housing.
Claim 15
Dependent Claim
23 words
The arrangement according to claim 13, wherein the means for providing fluidizing air further comprises tuyeres communicating between the chambers and the plenums.
Claim 16
Dependent Claim
12 words
The arrangement according to claim 14, wherein the main housing is cylindrical.
Claim 17
Dependent Claim
16 words
The arrangement according to claim 15, wherein the outer chamber and the inner chamber are annular.
Claim 18
Dependent Claim
96 words
An arrangement according to claim 1, wherein the main housing comprises an outer tube wall, an inner tube wall positioned within the outer tube wall and inwardly of the inner chamber, the inner wall including a roof forming a part of said means for diverting solids falling in the main housing into the inner chamber, an underflow passage in the partition wall between the inner and outer chambers forming the first passage means for passing solids, the partition including an upper portion extending to the outer wall and covering an upper end of the outer chamber.
Claim 19
Dependent Claim
78 words
An arrangement according to claim 17, wherein the inner wall extends above the floor, the inner wall comprising spaced tubes for the passage of gas across the inner wall up to the level of the vortex finder, the inner wall extending at the level of the vortex finder bottom in a tube wall with closed spaces between the tubes for forming the vortex finder, which together with the outer wall forms the vortex space communicating with the inlet.
Claim 20
Dependent Claim
44 words
An arrangement according to claim 17, wherein the second passage means comprises an overflow weir in the main housing between the outer chamber and the solids-processing device, the underflow passage being diametrically opposed to the overflow weir around a circumference of the main housing.
References Cited (Backward Citations)
US3219420A
Cited
US3885933A
Cited
US4746337A
Cited
US4746337B1
Cited
US4944250A
Cited
US4944250B1
Cited
US5123939A
Cited
US5203284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-02-27 | 1998-08-29 | 1999-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-27 | 2002-08-29 | 2003-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-27 | 2006-08-29 | 2007-02-28 | $7700.00 | Window Closed / Lapsed |