US4295967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidized bed contact apparatus
Assignee: Chiyoda Corp
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Filing: 1980-05-23
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Granted: 1981-10-20
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Expires: 2000-05-23
Abstract
Abstract Apparatus for liquid/solid contact including apparatus for single or multiple fluidized beds provided with one or more trays having a number of inverted frustum-shaped depressions with an opening located therein.
Inventors
- 👤 Akinori Kurima
- 👤 Yasuhiro Iwase
- 👤 Tadao Kimiwada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:52
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/28; C02F1/283; B; B01; B01D; B01D53/00; B01D53/02; B01D53/06; B01D53/10; B01D53/12; B01J; B01J8/00; B01J8/18; B01J8/20; B01J8/24; B01J8/26; B01J8/28; C02F2101/00; C02F2101/30; C02F2101/32; C02F2101/34; C02F2101/345; C02F2101/38; C02F2103/00; C02F2103/34; C02F2103/36; C02F2103/365
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
201 words
An apparatus adapted for contact between divergent materials, and capable of forming a fluidized bed condition, comprising: a plurality of trays, each of said plurality of trays being structured so as to have thereon a multiplicty of inverted frustum-shaped depressions adjacent to each other, each of said inverted frustum-shaped depressions being shaped so as to have a widened upper opening and inner lateral faces which incline inwardly from said upper opening to a narrowed lower opening at the bottom of said inverted frustum-shaped depressions, said trays being positioned vertically over each other so as to form a tower, said trays being positioned in such a manner that the lower narrowed opening of each of said inverted frustum-shaped depressions is vertically skewed with respect to each of the lower narrowed openings in each of the inverted frustum-shaped depressions in the next vertically positioned tray, in said tower; a housing surrounding said trays so as to form a support for said tower; a particulate feeding means provided on said tower with respect to each of said trays; a particulate material withdrawing means located on said tower; a liquid feeding means located on said tower; and a liquid discharge means located on said tower.
Claim 2
Independent Claim
201 words
An apparatus adapted for contact between divergent materials, and capable of forming a fluidized bed condition, comprising: a plurality of trays, each of said plurality of trays being structured so as to have thereon a multiplicty of inverted frustum-shaped depressions adjacent to each other, each of said inverted frustum-shaped depressions being shaped so as to have a widened upper opening and inner lateral faces which incline inwardly from said upper opening to a narrowed lower opening at the bottom of said inverted frustum-shaped depressions, said trays being positioned vertically over each other so as to form a tower, said trays being positioned in such a manner that the lower narrowed opening of each of said inverted frustum-shaped depressions is vertically skewed with respect to each of the lower narrowed openings in each of the inverted frustum-shaped depressions in the next vertically positioned tray, in said tower; a housing surrounding said trays so as to form a support for said tower; a particulate feeding means provided on said tower with respect to each of said trays; a particulate material withdrawing means located on said tower; a liquid feeding means located on said tower; and a liquid discharge means located on said tower.
Claim 3
Dependent Claim
37 words
An apparatus as in claim 1, wherein each of said inverted frustum-shaped depressions is comprised of inner lateral faces which make an inclined angle of greater than 20° with respect to the upper surface of the tray.
Claim 4
Dependent Claim
41 words
An apparatus as in claim 1, wherein said liquid feeding means is a nozzle located over the highest of said vertically spaced trays, and wherein said liquid discharge means is a nozzle located over the lowest of said vertically spaced trays.
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) | 1984-10-19 | 1985-04-20 | 1985-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-19 | 1989-04-20 | 1989-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-19 | 1993-04-20 | 1993-10-20 | $7700.00 | Window Closed / Lapsed |