US3817696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for fluidized bed treatment of solids or liquids
Assignee: Individual
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Filing: 1972-08-09
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Granted: 1974-06-18
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Expires: 1992-08-09
Abstract
Abstract The apparatus is constructed so that the carrier medium is fed into the upwardly flaring member at an angle to form a fluidized bed having a sharply defined depression or dip in the center. The lower pressure in the depression produces a reverse flow in a downward direction so that skeins from the fluidized bed may be returned into the bed without being directly removed from the furnace.
Inventors
- 👤 H Hereth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:36
CPC Classifications
F; F27; F27B; F27B15/00; F27B15/02; F27B15/10; B; B01; B01J; B01J2/00; B01J2/16; B01J8/00; B01J8/18; B01J8/24; B01J8/38; B01J8/384; B01J8/386; B01J8/44
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
104 words
A method of fluidized bed treatment of solid or liquid goods in a chamber comprising the steps of feeding the goods into the chamber from the top thereof; introducing a carrier medium into the chamber from the bottom thereof to form a fluidized bed of the goods; inducing the carrier medium to flow in a rotary upward flow while forming a strongly pronounced vortex dip in the surface of said fluidized bed, said dip defining a central region within said bed of lower pressure than in the remainder of said bed; and discharging the carrier medium with the treated goods above said fluidized bed.
Claim 2
Independent Claim
104 words
A method of fluidized bed treatment of solid or liquid goods in a chamber comprising the steps of feeding the goods into the chamber from the top thereof; introducing a carrier medium into the chamber from the bottom thereof to form a fluidized bed of the goods; inducing the carrier medium to flow in a rotary upward flow while forming a strongly pronounced vortex dip in the surface of said fluidized bed, said dip defining a central region within said bed of lower pressure than in the remainder of said bed; and discharging the carrier medium with the treated goods above said fluidized bed.
Claim 3
Independent Claim
144 words
An apparatus for fluidized bed treatment comprising an upright furnace of round cross-section defining a furnace chamber having a fixed vortex bottom and a top; a first inlet means in said bottom for introducing a carrier means into said chamber; a second inlet means in said top for introduction of goods to be treated into said chamber to define a fluidized bed with said carrier means; a plurality of bores in said bottom disposed in an inclined relation thereto for introducing the carrier means into said chamber to flow in a rotary upward flow path while forming a strongly pronounced vortex dip in the surface of the fluidized beD to define a central region of lower pressure then in the remainder of said bed; and an outlet means in an upper region of said furnace for discharging the carrier medium with the treated goods.
Claim 4
Independent Claim
144 words
An apparatus for fluidized bed treatment comprising an upright furnace of round cross-section defining a furnace chamber having a fixed vortex bottom and a top; a first inlet means in said bottom for introducing a carrier means into said chamber; a second inlet means in said top for introduction of goods to be treated into said chamber to define a fluidized bed with said carrier means; a plurality of bores in said bottom disposed in an inclined relation thereto for introducing the carrier means into said chamber to flow in a rotary upward flow path while forming a strongly pronounced vortex dip in the surface of the fluidized beD to define a central region of lower pressure then in the remainder of said bed; and an outlet means in an upper region of said furnace for discharging the carrier medium with the treated goods.
Claim 5
Dependent Claim
57 words
An apparatus as set forth in claim 1 wherein said bores are arranged on a plurality of imaginary concentric circles, each said bore being disposed at an angle of up to 45* relative to a tangent to a respective circle and at an angle of from 10* to 80* to a horizontal plane disposed in said bottom.
Claim 6
Dependent Claim
42 words
An apparatus as set forth in claim 1 wherein said vortex bottom consists of two parts, each part being separately connected to said first inlet means, said parts defining a surface area and a base area of an upwardly flaring conic frustum.
Claim 7
Dependent Claim
64 words
An apparatus as set forth in claim 4, wherein said vortex bottom has a portion defining a jacket of said conic frustum, said portion consisting of a plurality of sheet metal strips arranged in overlapped and spaced apart relationship substantially on cone generating lines to define slots between adjacent sheet metal strips, and a plurality of spacers between said strips to define nozzle rows.
Claim 8
Dependent Claim
22 words
An apparatus as set forth in claim 5 wherein a plurality of bores extend vertically through said bottom in said base area.
Claim 9
Dependent Claim
62 words
An apparatus as set forth in claim 5 having a plurality of bores in said base area arranged on a plurality of imaginary concentric circles, each said bore being disposed at an angle of up to 45* relative to a tangent to a respective circle and at an angle of from 10* to 80* to a horizontal plane disposed in said bottom.
Claim 10
Dependent Claim
24 words
An apparatus as set forth in claim 2 wherein said second inlet means is arranged centrally in a cover member of said furnace chamber.
Claim 11
Dependent Claim
19 words
An apparatus as set forth in claim 2 wherein said outlet means includes a plurality of heat exchange registers.
Claim 12
Dependent Claim
27 words
An apparatus as set forth in claim 2 having a double sheet metal jacket having ring guides for gas preheating in the region of the fluidized bed.
Claim 13
Dependent Claim
25 words
An apparatus as set forth in claim 2 having a jacket about said furnace chamber in the shape of an upwardly narrowing conic frustum jacket.
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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |