US3910428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal to reactor feeder for coal liquidification
Assignee: Individual
•
Filing: 1973-11-15
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Granted: 1975-10-07
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Expires: 1993-11-15
Abstract
Abstract A solid material feeding system for having controlled feeding of a granulated solid material from a hopper to a reactor and mixing with the solid material a gas which reacts with the solid in the reactor, the gas also cleaning the feeder, promoting a continuous flow without material plugging and hangup; the feeder atmosphere being high pressure hydrogen, the feeder drive shaft being sealed from the atmosphere by a sealing system of high pressure hydrogen over liquid via a low pressure seal, the high pressure liquid over atmosphere via a high pressure seal, the liquid being cooled as required.
Inventors
- 👤 Ii William Donald Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:53
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015; B01J8/002; Y; Y10; Y10S; Y10S277/00; Y10S277/93
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
202 words
Apparatus for feeding granular material from a hopper to a second vessel while maintaining a seal there between, comprising an outlet opening in the hopper bottom, a hollow shaft mounted transverse of said opening closing the same and rotatable therein, a plurality of buckets formed in the surface of said shaft and arranged to register successively with the interior of said hopper upon rotation of said shaft, a tube received axially in the interior of said hollow shaft, means fixing said tube against rotation, means for rotating said shaft about said tube, a port in the bottom of each of said buckets, a first port in the side wall of said tube positioned to register with said port in the bottom of successive ones of said buckets as they rotate about said tube to a discharge position, means for supplying pressured fluid to said tube to exit from said port, at least two additional ports in said tube located one on each side of the path of travel of said buckets, and means sealing said shaft on both sides of said buckets so that pressured fluid supplied to said tube flows from said additional ports toward said outlet opening of said hopper.
Claim 2
Dependent Claim
202 words
Apparatus for feeding granular material from a hopper to a second vessel while maintaining a seal there between, comprising an outlet opening in the hopper bottom, a hollow shaft mounted transverse of said opening closing the same and rotatable therein, a plurality of buckets formed in the surface of said shaft and arranged to register successively with the interior of said hopper upon rotation of said shaft, a tube received axially in the interior of said hollow shaft, means fixing said tube against rotation, means for rotating said shaft about said tube, a port in the bottom of each of said buckets, a first port in the side wall of said tube positioned to register with said port in the bottom of successive ones of said buckets as they rotate about said tube to a discharge position, means for supplying pressured fluid to said tube to exit from said port, at least two additional ports in said tube located one on each side of the path of travel of said buckets, and means sealing said shaft on both sides of said buckets so that pressured fluid supplied to said tube flows from said additional ports toward said outlet opening of said hopper.
Claim 3
Dependent Claim
95 words
Apparatus according to claim 1 in which one end of said shaft extends through said sealing means to the atmosphere and said sealing means comprises an outer seal element encircling said shaft, a housing about said seal element and shaft, a body of liquid in said housing inboard of said seal element and surrounding said shaft, and means confining said body of liquid to terminate outboard of said one additional port in said tube and of one side of said buckets whereby pressured fluid supplied through said tube is blocked from leakage by said liquid.
Claim 4
Dependent Claim
32 words
Apparatus according to claim 2 in which said means confining said body of liquid comprises a second seal about said shaft and axially slidable thereon inboard of said first mentioned seal element.
Claim 5
Dependent Claim
18 words
Apparatus according to claim 2 with the addition of a heat sink for cooling said body of liquid.
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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |