Patent US3232870A successfully refreshed from Google Patents.
Patent US4708092A successfully refreshed from Google Patents.
US4708092A
Expired / Lapsed
US
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Circulating fluidized bed boiler
Assignee: Amec Foster Wheeler Energia Oy
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Filing: 1986-01-23
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Granted: 1987-11-24
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Expires: 2006-01-23
Abstract
Abstract The invention comprises a circulating fluidized bed boiler having a vertical combustion chamber and a convection part which at least partly are formed by tube walls, and a horizontal cyclone separator, the gas inlet channel of which is connected to the upper part of the combustion chamber and a return channel for solids to the lower part of the combustion chamber. In order to accomplish a compact construction, the cyclone separator has been located on top of the combustion chamber and two opposite tube walls of the combustion chamber and possibly also one tube wall of the convection part have been used to form the cyclone separator.
Inventors
- 👤 Folke Engstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:02
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/005; B04; B04C; B04C1/00; B04C9/00; F; F22; F22B; F22B31/00; F22B31/0007; F22B31/0084; F23; F23C; F23C10/00; F23C10/02; F23C10/04; F23C10/08; F23J; F23J15/00; F23J15/02; F23J15/022; F23J15/027; F23C2206/00; F23C2206/10; F23C2206/101; F23J2900/00; F23J2900/15026
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
77 words
In a circulating fluidized bed boiler having a vertical combustion chamber and a convection part which at least partly are formed by tube walls, and a horizontal cyclone separator, the gas inlet channel of which is connected to the upper part of the combustion chamber and a return channel for solids to the lower part of the combustion chamber, the improvement comprising two opposite tube walls of the combustion chamber being used to form the cyclone separator.
Claim 2
Dependent Claim
77 words
In a circulating fluidized bed boiler having a vertical combustion chamber and a convection part which at least partly are formed by tube walls, and a horizontal cyclone separator, the gas inlet channel of which is connected to the upper part of the combustion chamber and a return channel for solids to the lower part of the combustion chamber, the improvement comprising two opposite tube walls of the combustion chamber being used to form the cyclone separator.
Claim 3
Dependent Claim
38 words
The circulating fluidized bed boiler according to claim 1, wherein two opposite tube walls of the combustion chamber and a wall parallel with one the tube walls beside the combustion chamber are used to form the cyclone separator.
Claim 4
Dependent Claim
35 words
The circulating fluidized bed boiler according to claim 2, the two opposite tube walls of the combustion chamber and one of the tube walls of the convection part are used to form the cyclone separator.
Claim 5
Dependent Claim
35 words
The circulating fluidized bed boiler according to claim 1, 2 or 3, wherein two opposite tube walls of the combustion chamber are used to form a gas inlet channel tangentially connected to the cyclone separator.
Claim 6
Dependent Claim
41 words
The circulating fluidized bed boiler according to claim 3, wherein one of the opposite tube walls of the combustion chamber and one of the tube walls of the convection part are used to form a turbulence chamber of the cyclone separator.
Claim 7
Dependent Claim
32 words
The circulating fluidized bed boiler according to claim 2, wherein two opposite tube walls of the combustion chamber are used to form a gas inlet channel tangentially connected to the cyclone separator.
Claim 8
Dependent Claim
32 words
The circulating fluidized bed boiler according to claim 3, wherein two opposite tube walls of the combustion chamber are used to form a gas inlet channel tangentially connected to the cyclone separator.
References Cited (Backward Citations)
US4165717A
Cited
GB2046886A
Cited
SU879144A1
Cited
GB2079620A
Cited
EP0060044A1
Cited
GB2104408A
Cited
WO1985004117A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-23 | 1991-05-25 | 1991-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-23 | 1995-05-25 | 1995-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-23 | 1999-05-25 | 1999-11-24 | $7700.00 | Window Closed / Lapsed |