US4211186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidized bed combusters
Assignee: Sodic SA
•
Filing: 1978-05-01
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Granted: 1980-07-08
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Expires: 1998-05-01
Abstract
Abstract The invention provides a fluidized bed combustion apparatus comprising in a common structure a plurality of modules, each module comprising: a diffuser bed support arranged to support and fluidize a bed of granular material by means of air diffusion into the bed, feed means for supplying material to be burnt to a bed supported on the bed support, and control means for controlling the operation of the bed independently of the operation of the other modules.
Inventors
- 👤 Arnold P. Pearce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:53
CPC Classifications
F; F23; F23C; F23C10/00; F23C10/18; F23C10/24; F23C10/26; F22; F22B; F22B31/00; F22B31/0007; F22B31/0015; F22B31/003; F22B31/0038; F23G; F23G5/00; F23G5/30
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
103 words
A fluidised bed combustion apparatus comprising in a common structure a plurality of fluidised bed modules arranged side by side in a bank of modules and a plurality of generally vertical walls arranged to separate the bed material of modules in said bank, each such module comprising: a diffuser bed support arranged to support and fluidise a bed of granular material by means of air diffusion into the bed, feed means for supplying material to be burnt to a bed supported on the bed support, and control means for controlling the operation of the bed independently of the operation of the other modules.
Claim 2
Dependent Claim
103 words
A fluidised bed combustion apparatus comprising in a common structure a plurality of fluidised bed modules arranged side by side in a bank of modules and a plurality of generally vertical walls arranged to separate the bed material of modules in said bank, each such module comprising: a diffuser bed support arranged to support and fluidise a bed of granular material by means of air diffusion into the bed, feed means for supplying material to be burnt to a bed supported on the bed support, and control means for controlling the operation of the bed independently of the operation of the other modules.
Claim 3
Dependent Claim
56 words
Combustion apparatus according to claim 1, wherein means is provided to selectively control the supply of air to each of the diffuser bed supports of the modules whereby each bed supported by a respective support may be fluidised to different degrees in different portions thereof so that it is caused to circulate about a horizontal axis.
Claim 4
Dependent Claim
47 words
Combustion apparatus according to claim 2, wherein the diffuser bed support of each module is planar and generally rectangular in plan, structure is provided to mount the support sloping downwards from one edge to the opposite edge, and an ash trough is provided along said opposite edge.
Claim 5
Dependent Claim
36 words
Combustion apparatus according to claim 1, wherein the diffuser bed support of each module is planar and generally rectangular in plan, and an ash trough is provided along one edge of the bank of bed supports.
Claim 6
Dependent Claim
34 words
Combustion apparatus according to claim 4, including support structure for the diffuser bed support of each module arranged so that the respective bed support slopes downwards towards said one edge from the opposite edge.
Claim 7
Dependent Claim
20 words
Combustion apparatus according to claim 4, wherein the ash troughs of the modules are continuous and formed as one trough.
Claim 8
Dependent Claim
19 words
Combustion apparatus according to claim 4, wherein the modules are arranged in two banks of modules in said structure.
Claim 9
Dependent Claim
23 words
Combustion apparatus according to claim 7, wherein the ash troughs of the modules in each bank are continuous and formed as one trough.
Claim 10
Dependent Claim
28 words
Combustion apparatus according to claim 7, wherein the two banks are arranged side by side with the ash troughs of the banks adjacent each other between the banks.
Claim 11
Dependent Claim
36 words
Combustion apparats according to claim 1, in which said separating walls each include a heat exchange tubular structure for the extraction of heat from fluidised beds in the modules disposed on each side of the wall.
Claim 12
Dependent Claim
24 words
Combustion apparatus according to claim 9, including a central baffle structure disposed between said two banks of modules separating respective modules in the banks.
Claim 13
Dependent Claim
28 words
Combustion apparatus according to claim 11 wherein said central baffle structure includes a heat exchange tube structure for the extraction of heat from fluidised beds in the modules.
Claim 14
Dependent Claim
35 words
Combustion apparatus according to claim 11 wherein the central baffle structure includes an angled portion on each side thereof extending outwardly over a part of the diffuser bed supports of the respective banks of modules.
Claim 15
Dependent Claim
31 words
Combustion apparatus according to claim 11 wherein the ash troughs of the modules of the two banks of modules are formed as a common trough divided by the central baffle structure.
Claim 16
Dependent Claim
18 words
Combustion apparatus according to claim 4 wherein the ash trough of said bank includes an ash extraction means.
Claim 17
Dependent Claim
43 words
Combustion apparatus according to claim 15 including screening apparatus connected to the ash extraction means of each module and arranged to separate ash from any bed material extracted with the ash, and a reservoir arranged for the collection of the separated bed material.
Claim 18
Dependent Claim
33 words
Combustion apparatus according to claim 16 including recirculation means arranged to convey bed material selectively between the reservoir and each module whereby to control the level of the fluidised bed in each module.
Claim 19
Dependent Claim
25 words
Combustion apparatus according to claim 16 wherein said reservoir is disposed at a level below the level of the diffuser bed supports of the modules.
Claim 20
Dependent Claim
38 words
Combustion apparatus according to claim 16, wherein said recirculation means comprises means for introducing fluid under pressure into the reservoir above bed material therein, and a conduit for bed material leading from the bottom region of the reservoir.
Claim 21
Dependent Claim
27 words
Combustion apparatus according to claim 19 wherein said reservoir includes a movable piston arranged to separate bed material therein from the fluid under pressure when introduced therein.
Claim 22
Dependent Claim
15 words
Combustion apparatus according to claim 16 including a plurality of such reservoirs for bed material.
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) | 1983-07-08 | 1984-01-07 | 1984-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-08 | 1988-01-07 | 1988-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-08 | 1992-01-07 | 1992-07-08 | $7700.00 | Window Closed / Lapsed |