US3772999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidized bed apparatus
Assignee: Awt Systems Inc
•
Filing: 1972-03-06
•
Granted: 1973-11-20
•
Expires: 1992-03-06
Abstract
Abstract An improved fluidized bed apparatus for combusting or reacting mixtures of combustible and non-combustible waste matter is disclosed. The improvement resides in a distributor plate having sides sloping toward the bottom of the apparatus and having an inlet for solid feed in the side of the distributor plate. A pipe extends downwardly from the base of the distributor plate and functions to capture non-combustibles in the solid feed. A lock is provided which permits non-combustibles to be removed from the apparatus without interruption of operation.
Inventors
- 👤 C Miller
- 👤 H Staffin
- 👤 R Staffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:23
CPC Classifications
F; F23; F23C; F23C10/00; F23C10/18; F23C10/24; F23C10/22; F23G; F23G5/00; F23G5/30; F23G2205/00; F23G2205/12; F23G2205/121
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
111 words
In a fluidized bed apparatus for treating feed comprising a mixture of combustible and non-combustible solids, the improvement comprising: a. a reactor distributor plate for supporting a fluidized bed and having fluidizing gas passages therethrough,said distributor plate having side walls sloping downwardly from the periphery of the reactor toward an outlet in the center thereof; b. a pipe in communication with the outlet in the bottom of the distributor plate and extending downwardly therefrom forming an outlet pipe for the fluidized bed and defining a capture bed below the fluidized bed; and c. means for supplying fluidizing gas to the gas passages in the distributor plate and to said capture bed.
Claim 2
Dependent Claim
111 words
In a fluidized bed apparatus for treating feed comprising a mixture of combustible and non-combustible solids, the improvement comprising: a. a reactor distributor plate for supporting a fluidized bed and having fluidizing gas passages therethrough,said distributor plate having side walls sloping downwardly from the periphery of the reactor toward an outlet in the center thereof; b. a pipe in communication with the outlet in the bottom of the distributor plate and extending downwardly therefrom forming an outlet pipe for the fluidized bed and defining a capture bed below the fluidized bed; and c. means for supplying fluidizing gas to the gas passages in the distributor plate and to said capture bed.
Claim 3
Dependent Claim
16 words
The fluidized bed apparatus of claim 1 in which the distributor plate is frusto-conical in shape.
Claim 4
Dependent Claim
28 words
The fluidized bed apparatus of claim 1, including an opening in the sloping side wall of the distributor plate through which the feed is delivered to the reactor.
Claim 5
Dependent Claim
95 words
The fluidized bed apparatus of claim 1, including a lock in said outlet pipe located below the capture bed and having an entrance side and an exit side, the entrance side of the lock, when open, allowing passage of unreacted materials and bed particles to pass from the capture bed in the pipe to the interior of the lock and there remain while the exit side of the lock is closed and, when said entrance side is closed and said exit side is open, to allow the contents of the lock to be discharged therefrom.
Claim 6
Dependent Claim
102 words
The fluidized bed apparatus of claim 4 in which the lock comprises in combination first and second valves spaced apart along said pipe and each adapted to be operated between open and closed positions to permit or interrupt flow through the pipe, the valves and the portion of the pipe between them defining said lock whereby a quantity of unreacted materials and some reactor particles collected above the first valve can, by opening the first valve while the second valve is closed, pass into the lock and, upon closing the first valve and opening the second valve, be discharged from said lock.
Claim 7
Dependent Claim
21 words
The fluidized bed apparatus of claim 4, further characterized by means for supplying fluidizing gas to the contents of the lock.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |