US4008145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Converting solid fuels to gaseous and liquid fuels
Assignee: Individual
•
Filing: 1975-05-14
•
Granted: 1977-02-15
•
Expires: 1995-05-14
Abstract
Abstract A process for producing gaseous and liquid fuels from solid fuels by oil extraction, cracking in the presence of hot sand and treatment of products and byproducts to essentially eliminate pollution.
Inventors
- 👤 Arnold Marcel Leas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:21
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/002
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
224 words
A process for the production of gaseous and liquid fuels from solid fuel sources which comprises: 1. subjecting said solid fuel to oil extraction and hydrogenation in an oil extractor at a temperature of from about 500° to about 900° F; 2. removing top vent gases from said oil extractor to a cobalt oxide treater, removing hydrogen sulfide therefrom by reaction with said cobalt oxide to form cobalt sulfide, and recovering desulfurized low heat content gaseous fuel; 3. reacting the cobalt sulfide with steam and air to produce elemental sulfur and regenerate cobalt sulfide; 4. removing said elemental sulfur; 5. removing solids-oil slurry from said oil extractor to a hydrocracker, reducing high molecular weight compounds to lower molecular weight compounds therein; 6. removing the hydrocracked solids-oil slurry to a solids reactor, admixing said slurry with hot recirculating sand at a temperature of from about 900° to about 1300° F in a downward flow, producing high heat content gaseous fuel and vaporized gasoline and diesel fuels therein; 7. separating said gaseous and vaporized fuels; 8. hydrogenating and recycling said diesel fuel to said oil extractor; 9. recovering said gasoline fuel; 10. recycling a portion of said high heat content fuel gas to the diesel hydrogenator, desulfurizing and recovering the remainder as product; 11. removing ash from said solids reactor; 12. separating solid alkali metals therefrom;
Claim 2
Dependent Claim
224 words
A process for the production of gaseous and liquid fuels from solid fuel sources which comprises: 1. subjecting said solid fuel to oil extraction and hydrogenation in an oil extractor at a temperature of from about 500° to about 900° F; 2. removing top vent gases from said oil extractor to a cobalt oxide treater, removing hydrogen sulfide therefrom by reaction with said cobalt oxide to form cobalt sulfide, and recovering desulfurized low heat content gaseous fuel; 3. reacting the cobalt sulfide with steam and air to produce elemental sulfur and regenerate cobalt sulfide; 4. removing said elemental sulfur; 5. removing solids-oil slurry from said oil extractor to a hydrocracker, reducing high molecular weight compounds to lower molecular weight compounds therein; 6. removing the hydrocracked solids-oil slurry to a solids reactor, admixing said slurry with hot recirculating sand at a temperature of from about 900° to about 1300° F in a downward flow, producing high heat content gaseous fuel and vaporized gasoline and diesel fuels therein; 7. separating said gaseous and vaporized fuels; 8. hydrogenating and recycling said diesel fuel to said oil extractor; 9. recovering said gasoline fuel; 10. recycling a portion of said high heat content fuel gas to the diesel hydrogenator, desulfurizing and recovering the remainder as product; 11. removing ash from said solids reactor; 12. separating solid alkali metals therefrom;
Claim 3
Dependent Claim
33 words
decarbonizing said sand in said solids reactor with air, removing carbon dioxide, carbon monoxide and hydrogen therefrom during said decarbonization; and 14. recycling said sand and said carbon dioxide to said solids reactor.
Claim 4
Dependent Claim
33 words
decarbonizing said sand in said solids reactor with air, removing carbon dioxide, carbon monoxide and hydrogen therefrom during said decarbonization; and 14. recycling said sand and said carbon dioxide to said solids reactor.
Claim 5
Dependent Claim
13 words
The process as defined by claim 1 wherein the solid fuel is coal.
Claim 6
Dependent Claim
16 words
The process as defined by claim 1 wherein the solid fuel is a fibrous organic fuel.
Claim 7
Dependent Claim
13 words
The process as defined by claim 1 wherein the solid fuel is shale.
Claim 8
Dependent Claim
18 words
The process as defined by claim 1 wherein the oil extractor contains a catalytic amount of cobalt sulfide.
Claim 9
Dependent Claim
14 words
The process as defined by claim 1 wherein the process is a continuous process.
References Cited (Backward Citations)
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US3503867A
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US3617464A
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US3790467A
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US3736111A
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US3715301A
Cited
US3769197A
Cited
US3779893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |