US3625427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid feed system for fluidized beds
Assignee: Arthur D Little Inc
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Filing: 1970-02-25
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Granted: 1971-12-07
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Expires: 1990-02-25
Abstract
Abstract Apparatus for feeding liquid solutions by means of a nozzle into a fluidized bed used for evaporating liquids from solids in solution. The nozzle is coupled to a feed line outside the bed and a casing is provided to catch any fluid leaking from the coupling, thus preventing any fluid from leaking into the fluidized bed thereby helping to insure controlled chemical and physical properties in the solid particles thus produced.
Inventors
- 👤 Ravindra Nadkarni
- 👤 Frank J Tremblay
- 👤 Charles L Kusik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:49
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/16; B01J; B01J8/00; B01J8/18; B01J8/1818; B01J8/1827
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
106 words
An improved liquid feeding apparatus for introducing a feed liquid into a fluidized bed, comprising in combination a. a nozzle adapted to spray liquid into a fluidized bed; b. a liquid feed line; c. coupling means adapted to join said nozzle to said liquid feed line; d. casing means surrounding and defining around said feed line and said coupling an annular spacing adapted to collect liquid leakage, said casing means terminating in an end member through which said nozzle extends into said fluidized bed; and e. sleeve means affixed to the housing wall of said bed, said sleeve forming a tight fit around said casing means.
Claim 2
Dependent Claim
106 words
An improved liquid feeding apparatus for introducing a feed liquid into a fluidized bed, comprising in combination a. a nozzle adapted to spray liquid into a fluidized bed; b. a liquid feed line; c. coupling means adapted to join said nozzle to said liquid feed line; d. casing means surrounding and defining around said feed line and said coupling an annular spacing adapted to collect liquid leakage, said casing means terminating in an end member through which said nozzle extends into said fluidized bed; and e. sleeve means affixed to the housing wall of said bed, said sleeve forming a tight fit around said casing means.
Claim 3
Dependent Claim
34 words
A liquid feeding apparatus in accordance with claim 1 including means to deliver a pressurized fluid to any void volumes defined between said casing means and said sleeve thereby to form a pressure seal.
Claim 4
Dependent Claim
31 words
A liquid feeding apparatus in accordance with claim 1 wherein said casing means is closed and means are provided to introduce a wash liquid into and withdraw it from said casing.
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) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |