US3779181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid bed dryer and heat exchange system
Assignee: Awt Systems Inc
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Filing: 1972-08-30
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Granted: 1973-12-18
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Expires: 1992-08-30
Abstract
Abstract A fluid bed dryer comprising a drying chamber and a heating jacket contiguous with a drying chamber. The drying chamber and the heating jacket are each adapted to contain a bed of fluidizable particulate heat transfer material and each has a fluidizing gas inlet and an exhaust gas outlet. The drying chamber also has a feed inlet and a feed outlet. The fluid bed dryer may be used in a heat exchange system in combination with means for conveying a slurry comprising liquid and combustible waste solids to the feed inlet of the drying chamber of the fluid bed dryer; a reactor having a feed inlet, a reaction section, and a vapor exhaust port; conveyor means for transferring solids from the feed outlet of the drying chamber to the feed inlet of the reactor; conduit means connecting the vapor exhaust port of the reactor to the fluidizing gas inlet of the heating jacket of the dryer; and means for providing fluidizing gas to the fluidizing gas inlet of the drying chamber.
Inventors
- 👤 H Staffin
- 👤 R Staffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:48
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015; B01J8/002; B01J8/18; B01J8/1836; B01J8/24; F; F23; F23G; F23G5/00; F23G5/02; F23G5/04; F23G5/30; F26; F26B; F26B23/00; F26B23/02; F26B23/022; F26B3/00; F26B3/02; F26B3/06; F26B3/08; F26B3/082; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00106; B01J2208/00168; B01J2208/00176; F23G2201/00; F23G2201/10; F23G2201/101; F23G2203/00; F23G2203/50; F23G2203/503; F23G2209/00; F23G2209/12
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
176 words
A heat exchange system comprising in combination: a. a fluid bed dryer having a drying chamber and a heating jacket contiguous with said drying chamber, said drying chamber and heating jacket each adapted to contain a bed of fluidizable particulate heat transfer material and each having a fluidizing gas inlet and an exhaust gas outlet, said drying chamber having a feed inlet and feed outlet, b. means for conveying a slurry comprising liquid and combustible waste solids to said feed inLet of the chamber of said fluid bed dryer, c. a reactor having a feed inlet, a reaction section, and a vapor exhaust port, d. conveyor means for transferring solids from the feed outlet of the drying chamber of said fluid bed dryer to the feed inlet of said reactor, e. conduit means connecting the vapor exhaust port of said reactor to said fluidizing gas inlet of the heating jacket of the fluid bed dryer, and f. means for providing fluidizing gas to said fluidizing gas inlet of the drying chamber of said fluid bed dryer.
Claim 2
Dependent Claim
176 words
A heat exchange system comprising in combination: a. a fluid bed dryer having a drying chamber and a heating jacket contiguous with said drying chamber, said drying chamber and heating jacket each adapted to contain a bed of fluidizable particulate heat transfer material and each having a fluidizing gas inlet and an exhaust gas outlet, said drying chamber having a feed inlet and feed outlet, b. means for conveying a slurry comprising liquid and combustible waste solids to said feed inLet of the chamber of said fluid bed dryer, c. a reactor having a feed inlet, a reaction section, and a vapor exhaust port, d. conveyor means for transferring solids from the feed outlet of the drying chamber of said fluid bed dryer to the feed inlet of said reactor, e. conduit means connecting the vapor exhaust port of said reactor to said fluidizing gas inlet of the heating jacket of the fluid bed dryer, and f. means for providing fluidizing gas to said fluidizing gas inlet of the drying chamber of said fluid bed dryer.
Claim 3
Dependent Claim
31 words
The heat exchange system of claim 1 in which the fluid bed dryer has a vertical cylindrical drying chamber and the heating jacket comprises a cylindrical chamber surrounding said drying chamber.
Claim 4
Dependent Claim
31 words
The heat exchange system of claim 2 in which the reactor has a burner extending into the reaction section to ignite waste solids feed to the reactor to effect incineration thereof.
Claim 5
Dependent Claim
132 words
The heat exchange system of claim 2 in which the conveyor means comprises a first conveyor screw in communication with the feed outlet of the drying chamber, said first conveyor screw having a feed inlet end extending through the heating jacket and into the drying chamber of the fluid bed dryer and a discharge end, a dried solids received in communication with the discharge end of the first conveyor screw, a second conveyor screw having a feed inlet end in communication with the dried solids receiver and a feed discharge end in communication with the reactor feed inlet, and drive means connected to said first and second screw conveyors to impart, upon actuation thereof, rotation to said first and second conveyors to effect movement of solids from the dryer to the reactor.
Claim 6
Dependent Claim
132 words
The heat exchange system of claim 3 in which the conveyor means comprises a first conveyor screw in communication with the feed outlet of the drying chamber, said first conveyor screw having a feed inlet end extending through the heating jacket and into the drying chamber of the fluid bed dryer and a discharge end, a dried solids receiver in communication with the discharge end of the first conveyor screw, a second conveyor screw having a feed inlet end in communication with the dried solids receiver and a feed discharge end in communication with the reactor feed inlet, and drive means connected to said first and second screw conveyors to impart, upon actuation thereof, rotation to said first and second conveyors to effect movment of solids from the dryer to the reactor.
Claim 7
Dependent Claim
28 words
The heat exchange system of claim 1 which includes conduit means communicatively connecting the gas outlet of the drying chamber of the fluid bed dryer with the reactor.
Claim 8
Dependent Claim
48 words
The heat exchange system of claim 1 in which said reactor is a fluidized bed reactor having a fluidizing gas inlet, a vapor disengagement section directly above and in communication with said reaction section, and means for providing fluidizing gas to said fluidizing gas inlet of said reactor.
Claim 9
Dependent Claim
31 words
The heat exchange system of claim 7 in which the reactor has a burner extending into the reaction section to ignite waste solids feed to the reactor to effect incineration thereof.
Claim 10
Dependent Claim
132 words
The heat exchange system of claim 7 in which the conveyor means comprises a first conveyor screw in communication with the feed outlet of the drying chamber, said first conveyor screw having a feed inlet end extending through the heating jacket and into the drying chamber of the fluid bed dryer and a discharge end, a dried solids receiver in communication with the discharge end of the first conveyor screw, a second conveyor screw having a feed inlet end in communication with the dried solids receiver and a feed discharge end in communication with the reactor feed inlet, and drive means connected to said first and second screw conveyors to impart, upon actuation thereof, rotation to said first and second conveyors to effect movement of solids from the dryer to the reactor.
Claim 11
Dependent Claim
31 words
The heat exchange system of claim 9 in which the fluid bed dryer has a vertiCal, cylindrical drying chamber and the heating jacket comprises a cylindrical chamber surrounding said drying chamber.
Claim 12
Dependent Claim
38 words
The heat exchange system of claim 7 in which a conduit means adapted to carry fluidizable solids extends from about the interface between the reaction section and the vapor disengagement section of the reactor into the drying chamber.
Claim 13
Dependent Claim
33 words
The heat exchange system of claim 7 which includes conduit means communicatively connecting the gas outlet of the drying chamber of the fluid bed dryer with the vapor disengagement section of the reactor.
Claim 14
Dependent Claim
92 words
A fluid bed dryer comprising a drying chamber and a heating jacket contiguous with said drying chamber, said drying chamber and said heating jacket each adapted to contain a bed of fluidizable particulate heat transfer material and each having a fluid gas inlet and an exhaust gas outlet, said drying chamber having a feed inlet and feed outlet, said feed outlet vertically spaced from said feed inlet, and a conveyor means extending from said feed outlet into the drying chamber for transferring dried solids from the drying chamber to said feed outlet.
Claim 15
Dependent Claim
92 words
A fluid bed dryer comprising a drying chamber and a heating jacket contiguous with said drying chamber, said drying chamber and said heating jacket each adapted to contain a bed of fluidizable particulate heat transfer material and each having a fluid gas inlet and an exhaust gas outlet, said drying chamber having a feed inlet and feed outlet, said feed outlet vertically spaced from said feed inlet, and a conveyor means extending from said feed outlet into the drying chamber for transferring dried solids from the drying chamber to said feed outlet.
Claim 16
Dependent Claim
27 words
The fluid bed dryer of claim 1 having a vertical cylindrical drying chamber and in which said heating jacket comprises a cylindrical chamber surrounding said drying chamber.
Claim 17
Dependent Claim
40 words
The fluid bed dryer of claim 13 in which said drying chamber contains a gas distributor plate positioned in the lower portion of said drying chamber, said plate being adapted to support a bed of fluidizable particulate heat transfer material.
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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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |