Patent US4538053A successfully refreshed from Google Patents.
Patent US3658654A successfully refreshed from Google Patents.
US3658654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw-conveying retorting apparatus with hydrogenation means
Assignee: Standard Oil Co
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Filing: 1969-04-16
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Granted: 1972-04-25
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Expires: 1989-04-16
Abstract
Abstract Apparatus for the pyrolysis of solids containing carbonaceous materials including a cylindrical substantially horizontal pyrolysis vessel together with solids input and removal means communicating with the vessel. Solids are conveyed through the pyrolysis vessel by means of an auger-type conveyor. Heating means are provided for heating solids between the input and removal means. Gas input and withdrawal means permit the input and removal of gas from the pyrolysis vessel, and gas delivery means are provided for delivering gas to subsequent processing equipment. The gas is recycled back to the gas input means via gas recycle means. Stripping gas delivery means are also provided to deliver a stripping gas to the pyrolysis vessel downstream of the gas withdrawal means.
Inventors
- 👤 Louis C Gutberlet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:45
CPC Classifications
C; C10; C10B; C10B7/00; C10B7/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
22 words
The apparatus as defined in claim 1 further including gas preheating means for preheating said gas prior to introduction into said vessel.
Claim 2
Dependent Claim
32 words
The apparatus as defined in claim 2 further including a spent shale container communicating with said solids removal means, and wherein said stripping gas input means communicates with said spent shale container.
Claim 3
Dependent Claim
186 words
Improved apparatus for the pyrolysis of oil shale and the like comprising: a substantially horizontal, cylindrical pyrolysis vessel; an auger-type conveyor in said vessel, said conveyor being adapted to deliver solids in a downstream direction from an upstream portion to a downstream portion of said vessel; a raw shale container; solids input means providing communication between said storage container and said upstream portion of said pyrolysis vessel; a spent shale container; solids removal means providing communication between said spent shale container and said downstream portion of said pyrolysis vessel; heating means for heating said solids containing carbonaceous materials between said solids input and removal means; gas input means communicating with said vessel; gas withdrawal means communicating with said vessel at a point located in said downstream direction from said gas input means; stripping gas input means communicating with said vessel at a point located in said downstream direction from said gas withdrawal means; hydrogenation means; gas deliverY means for delivering gases from said gas withdrawal means to said hydrogenation means; and gas recycle means for recycling gas from said hydrogenation means to said gas input means.
Claim 4
Dependent Claim
23 words
The apparatus as defined in claim 4 wherein said stripping gas input means communicates with said pyrolysis vessel at the downstream end thereof.
Claim 5
Dependent Claim
23 words
The apparatus as defined in claim 4 wherein said stripping gas input means communicates with said pyrolysis vessel through said spent shale container.
Claim 6
Dependent Claim
18 words
The apparatus as defined in claim 4 wherein said stripping gas input means includes stripping gas preheating means.
Claim 7
Dependent Claim
21 words
The apparatus as defined in claim 4 further including gas preheating means for preheating said gas in said gas recycle means.
References Cited (Backward Citations)
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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) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |