Patent US4699068A successfully refreshed from Google Patents.
US4699068A
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Apparatus for separating solids from flue gases in a circulating fluidized bed reactor
Assignee: Ahlstrom Corp
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Filing: 1986-01-23
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Granted: 1987-10-13
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Expires: 2006-01-23
Abstract
Abstract The invention comprises an apparatus for separating solids from flue gases in a circulating fluidized bed reactor having a horizontal cyclone separator, the gas inlet channel of which is connected to the upper part of the reactor, a return channel of the solids to the lower part of the reactor, and a gas outlet to a convection part of the reactor. In order to accomplish a compact construction, there is a plurality of coaxial turbulence chambers in the cyclone separator, the opposite walls of which form gas outlet channels between the turbulence channels.
Inventors
- 👤 Folke Engstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:21
CPC Classifications
B; B04; B04C; B04C9/00; B01; B01J; B01J8/00; B01J8/005; B04C1/00; 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
101 words
Apparatus for separating solids from flue gases produced in the combustion chamber of a circulating fluidized bed reactor comprising: a horizontal cyclone separator comprising a plurality of coaxially aligned turbulence chambers located above the combustion chamber, a gas inlet channel extending from an upper part of the combustion chamber to an upper part of the cyclone separator, a plurality of return channels for returning solids from said cyclone separator to the combustion chamber, and a plurality of gas outlet channels from the separator to a convection part of the reactor, said gas outlet channels located between said coaxially aligned turbulence chambers.
Claim 2
Dependent Claim
101 words
Apparatus for separating solids from flue gases produced in the combustion chamber of a circulating fluidized bed reactor comprising: a horizontal cyclone separator comprising a plurality of coaxially aligned turbulence chambers located above the combustion chamber, a gas inlet channel extending from an upper part of the combustion chamber to an upper part of the cyclone separator, a plurality of return channels for returning solids from said cyclone separator to the combustion chamber, and a plurality of gas outlet channels from the separator to a convection part of the reactor, said gas outlet channels located between said coaxially aligned turbulence chambers.
Claim 3
Dependent Claim
16 words
The apparatus according to claim 1 wherein the turbulence chambers have a common gas inlet channel.
Claim 4
Dependent Claim
29 words
The apparatus according to claim 1 further comprising gas outlet openings in opposite end walls of the coaxial turbulence chambers connecting said turbulence chambers to said gas outlet channels.
Claim 5
Dependent Claim
22 words
The apparatus according to claim 1, 2 or 3 wherein each turbulence chamber is connected to its own return channel for solids.
Claim 6
Dependent Claim
21 words
The apparatus according to claim 2 further comprising a gas outlet in the opposite end walls of the parallel turbulence channels.
Claim 7
Dependent Claim
19 words
The apparatus according to claim 2 wherein each turbulence chamber is connected to its own return channel for solids.
Claim 8
Dependent Claim
19 words
The apparatus according to claim 3 wherein each turbulence chamber is connected to its own return channel for solids.
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) | 1990-10-12 | 1991-04-13 | 1991-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-12 | 1995-04-13 | 1995-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-12 | 1999-04-13 | 1999-10-13 | $7700.00 | Window Closed / Lapsed |