US3847094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of combustible residue
Assignee: Belgonucleaire SA
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Filing: 1973-09-05
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Granted: 1974-11-12
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Expires: 1993-09-05
Abstract
Abstract A process and an apparatus for performance of the process for treating incinerated materials to filter out particles and for regenerating the filter: the fumes and particle waste produced by a furnace are passed through a fluidized bed of granules wherein they are further incinerated and they then pass through a filter of granules where the particles are removed; when the filter becomes contaminated, the pressure drop caused thereby is sensed and contaminated granules are ejected therefrom into the fluidized bed; granules in the fluidized bed are simultaneously transferred back to the filter.
Inventors
- 👤 A Taeymans
- 👤 G Dumont
- 👤 W Balleux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:02
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/02; B01J; B01J8/00; B01J8/18; F; F23; F23G; F23G5/00; F23G5/08; F23G5/14; F23G5/18; F23G5/30; F23G2209/00; F23G2209/22; F23G2209/26; F23G2209/261; F23G2209/28
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
102 words
A process for treating incinerated material to filter out particles and for regenerating the filter comprising the steps of: incinerating the material, thereby generating fumes and particles; passing the fumes and particles through a filter of the granule bed type to filter out the particles, the particles being retained among the filter granules; regenerating the granules by transferring them from the filter into a fluidized bed of such granules and incinerating the granules in the bed, thereby destroying the particles; returning the regenerated granules to the filter; after incineration of the material, first passing the fumes and particles through the fluidized bed.
Claim 2
Dependent Claim
102 words
A process for treating incinerated material to filter out particles and for regenerating the filter comprising the steps of: incinerating the material, thereby generating fumes and particles; passing the fumes and particles through a filter of the granule bed type to filter out the particles, the particles being retained among the filter granules; regenerating the granules by transferring them from the filter into a fluidized bed of such granules and incinerating the granules in the bed, thereby destroying the particles; returning the regenerated granules to the filter; after incineration of the material, first passing the fumes and particles through the fluidized bed.
Claim 3
Dependent Claim
125 words
A process for treating incinerated material to filter out particles and for regenerating the filter comprising the steps of: incinerating the material, thereBy generating fumes and particles; passing the fumes and particles through a filter of the granule bed type to filter out the particles, the particles being retained among the filter granules; regenerating the granules by transferring them from the filter into a fluidized bed of such granules and incinerating the granules in the bed, thereby destroying the particles; measuring the pressure drop across the filter, and when that drop exceeds a predetermined level, commencing the transfer of granules from the filter to the fluidized bed; returning the regenerated granules to the filter; simultaneously with transfer of granules from the filter to the bed.
Claim 4
Dependent Claim
125 words
A process for treating incinerated material to filter out particles and for regenerating the filter comprising the steps of: incinerating the material, thereBy generating fumes and particles; passing the fumes and particles through a filter of the granule bed type to filter out the particles, the particles being retained among the filter granules; regenerating the granules by transferring them from the filter into a fluidized bed of such granules and incinerating the granules in the bed, thereby destroying the particles; measuring the pressure drop across the filter, and when that drop exceeds a predetermined level, commencing the transfer of granules from the filter to the fluidized bed; returning the regenerated granules to the filter; simultaneously with transfer of granules from the filter to the bed.
Claim 5
Dependent Claim
140 words
A process for treating incinerated material to filter out particles and for regenerating the filter comprising the steps of: incinerating the material, thereby generating fumes and particles; passing the fumes and particles through a filter of the granule bed type to filter out the particles, the particles being retained among the filter granules; regenerating the granules by transferring them from the filter into a fluidized bed of such granules and incinerating the granules in the bed, thereby destroying the particles; measuring the pressure drop across the filter, and when that drop exceeds a predetermined level, commencing the transfer of granules from the filter to the fluidized bed; returning the regenerated granules from the filter to the fluidized bed; returning the regenerated granules to the filter; the granules in the fluidized bed and in the filter are of the same material.
Claim 6
Dependent Claim
140 words
A process for treating incinerated material to filter out particles and for regenerating the filter comprising the steps of: incinerating the material, thereby generating fumes and particles; passing the fumes and particles through a filter of the granule bed type to filter out the particles, the particles being retained among the filter granules; regenerating the granules by transferring them from the filter into a fluidized bed of such granules and incinerating the granules in the bed, thereby destroying the particles; measuring the pressure drop across the filter, and when that drop exceeds a predetermined level, commencing the transfer of granules from the filter to the fluidized bed; returning the regenerated granules from the filter to the fluidized bed; returning the regenerated granules to the filter; the granules in the fluidized bed and in the filter are of the same material.
Claim 7
Dependent Claim
12 words
The process of claim 3, wherein the granules are of ceramic material.
Claim 8
Dependent Claim
11 words
The process of claim 3, wherein the granules are of sand.
Claim 9
Independent Claim
123 words
An apparatus for treating incinerated material to filter out particles and for regenerating the filter comprising: a furnace for incinerating material; said furnace having a fume and burnt particle outlet; a filter connected to said furnace outlet to receive and filter and trap particles in the fumes; said filter having a bed and being of the type using loose granules located in said bed for filtering out particles; means directing the fumes and particles through said granule bed and said granules; a fluidized bed containing said granules; means for fluidizing said fluidized bed, means for heating said fluidized bed to incinerate particles mixed with the granules therein; means for transferring granules from said filter to said fluidized bed for regeneration in the latter.
Claim 10
Independent Claim
123 words
An apparatus for treating incinerated material to filter out particles and for regenerating the filter comprising: a furnace for incinerating material; said furnace having a fume and burnt particle outlet; a filter connected to said furnace outlet to receive and filter and trap particles in the fumes; said filter having a bed and being of the type using loose granules located in said bed for filtering out particles; means directing the fumes and particles through said granule bed and said granules; a fluidized bed containing said granules; means for fluidizing said fluidized bed, means for heating said fluidized bed to incinerate particles mixed with the granules therein; means for transferring granules from said filter to said fluidized bed for regeneration in the latter.
Claim 11
Dependent Claim
39 words
The apparatus of claim 6, wherein said furnace outlet is connected to said fluidized bed and that said bed communicates with said filter such that the fumes and particles passing to said filter first pass through said fluidized bed.
Claim 12
Dependent Claim
50 words
The apparatus of claim 6, further comprising means for sensing the pressure drop across said filter; said means for transferring granules from said filter to said fluidized bed being connected to said pressure drop sensing means and being responsive to and operative when the pressure drop exceeds a predetermined level.
Claim 13
Dependent Claim
56 words
The apparatus of claim 8, wherein said filter bed comprises a container with a side that communicates with said fluidized bed, which permits granules in said filter to pass therethrough; said means for transferring granules from said filter comprises a compressed air supply positioned to blow granules out said filter side communicating with said fluidized bed.
Claim 14
Dependent Claim
36 words
The apparatus of claim 7, wherein said fluidized bed has a lower section and an upper section, with the latter having a larger volume to retain said granules therein and prevent their moving through said filter.
Claim 15
Dependent Claim
36 words
The apparatus of claim 7 further comprising: a granule transfer conduit extending upwardly out of said fluidized bed and communicating with said filter thereby to transmit granules and fumes from said fluidized bed to said filter.
Claim 16
Dependent Claim
64 words
The apparatus of claim 11, wherein said granule transfer conduit is connected to a storage enclosure for granules transferred from said fluidized bed; said storage compartment being wider than said granule transfer conduit and having an opening at its top for fumes and particles, while said granules settle in said storage enclosure; said storage enclosure is connected to said filter and delivers granules thereto.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |