Patent US3841465A successfully refreshed from Google Patents.
US3841465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solids feed to a pressurized reactor
Assignee: Awt Systems Inc
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Filing: 1972-03-06
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Granted: 1974-10-15
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Expires: 1992-03-06
Abstract
Abstract A device is provided for delivering a solid feed to a reactor operating at elevated temperatures. Pressure within the reactor is controlled outside the reactor hot zone. The device has two conveyors separated by an expansion chamber. The first of the conveyors has an extrusion zone in which the solid feed is extruded into a plug which functions as a seal for the reactor. The plug is broken up in the expansion chamber with the aid of a rotating ram which is designed to seal the first conveyor in the event the extruding solid plug fails to provide the necessary seal or in the event the feed device is shut down. The second conveyor delivers the feed into the reactor.
Inventors
- 👤 G Seely
- 👤 C Miller
- 👤 K Square
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:12
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/44; F23G5/442; F23G5/444; B; B01; B01J; B01J2208/00; B01J2208/00743; B01J2208/00769; F23G2201/00; F23G2201/80; F23G2203/00; F23G2203/50; F23G2205/00; F23G2205/12; F23G2205/121
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
367 words
A device for delivering a solid feed into a reactor operating at elevated temperatures, wherein the pressure in the reactor is controlled outside of the reactor hot zone, said device having in combination: a. a solids feed forming tube having a transfer zone and an extrusion zone, said tube having a feed inlet-end, a feed discharge-end, and a seat at the feed discharge-end of said forming tube for receiving a seal means, b. a first conveyor means extending axially of said forming tube from the feed inlet-end of the forming tube to the forward-end of the transfer zone, c. an expansion chamber connected to and in communication with the discharge-end of the forming tube, and having an outletend, d. a reactor conveying tube having a solids feed inlet-end and a solids feed discharge-end, the inlet-end of the reactor conveying tube being connected to and in communication with the outlet-end of the expansion chamber, and the discharge-end of the reactor conveying tube being in communication with the reactor to be supplied with the solids feed, e. a second conveyor means extending axially through said reactor conveying tube from the inlet-end to the discharge-end thereof, f. drive means connected to said first and second conveyor means to impart, upon actuation thereof, rotation to said first and second conveyors, g. a ram having a ram head disposed within the expansion chamber in axial alignment with the solids feed forming tube, said ram having a base-end providing a seal means for engaging the seat of the forming tube, a peripheral surface tapering forward from the base-end toward a forward-end and cutting means mounted on the peripheral surface of the ram head for breaking up feed of solids discharged from the forming tube, said cutting means being located to avoid interference with the seat of the forming tube, h. drive means for imparting rotation to said ram head about its axis, and i. drive means for biasing the ram head into engagement with the seat of the solids forming tube to effect a sealing thereof and capable of permitting reciprocal movement of the ram head away from sealing engagement when opposed by pressures from the discharged feed above a pre-established pressure level.
Claim 2
Independent Claim
367 words
A device for delivering a solid feed into a reactor operating at elevated temperatures, wherein the pressure in the reactor is controlled outside of the reactor hot zone, said device having in combination: a. a solids feed forming tube having a transfer zone and an extrusion zone, said tube having a feed inlet-end, a feed discharge-end, and a seat at the feed discharge-end of said forming tube for receiving a seal means, b. a first conveyor means extending axially of said forming tube from the feed inlet-end of the forming tube to the forward-end of the transfer zone, c. an expansion chamber connected to and in communication with the discharge-end of the forming tube, and having an outletend, d. a reactor conveying tube having a solids feed inlet-end and a solids feed discharge-end, the inlet-end of the reactor conveying tube being connected to and in communication with the outlet-end of the expansion chamber, and the discharge-end of the reactor conveying tube being in communication with the reactor to be supplied with the solids feed, e. a second conveyor means extending axially through said reactor conveying tube from the inlet-end to the discharge-end thereof, f. drive means connected to said first and second conveyor means to impart, upon actuation thereof, rotation to said first and second conveyors, g. a ram having a ram head disposed within the expansion chamber in axial alignment with the solids feed forming tube, said ram having a base-end providing a seal means for engaging the seat of the forming tube, a peripheral surface tapering forward from the base-end toward a forward-end and cutting means mounted on the peripheral surface of the ram head for breaking up feed of solids discharged from the forming tube, said cutting means being located to avoid interference with the seat of the forming tube, h. drive means for imparting rotation to said ram head about its axis, and i. drive means for biasing the ram head into engagement with the seat of the solids forming tube to effect a sealing thereof and capable of permitting reciprocal movement of the ram head away from sealing engagement when opposed by pressures from the discharged feed above a pre-established pressure level.
Claim 3
Dependent Claim
21 words
The device of claim 1, in which the second conveyor means rotates at a speed greater than said first conveyor means.
Claim 4
Dependent Claim
13 words
The device of claim 1 in which the ram head is cone shaped.
Claim 5
Dependent Claim
17 words
The device of claim 1 in which the first and second conveyor means are screw type conveyors.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |