US4014661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel making process
Assignee: Texaco Inc
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Filing: 1975-03-17
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Granted: 1977-03-29
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Expires: 1995-03-17
Abstract
Abstract Disclosed is a process for making a hydrocarbon coke slurry fuel by coking carbonaceous materials in the liquid phase under autogenous pressure to form coke which is then extracted with a combustible hydrocarbon at high temperatures and pressures to produce a dense slurry of coke in the hydrocarbon suitable for use as a fuel.
Inventors
- 👤 Howard V. Hess
- 👤 William F. Franz
- 👤 Edward L. Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:51
CPC Classifications
C; C10; C10B; C10B49/00; C10B49/14; C10B53/00; C10L; C10L1/00; C10L1/32; C10L1/324
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
108 words
A process for producing a coke-containing fuel, comprising coking a carbonaceous material in the liquid phase under a pressure of 300 to 3200 psig at a temperature of 400° to 700° F for 0.5 minutes to 3 hours to form gases, hot liquid and liquid-containing coke; separating said coke from said liquid and gases; drying said coke by extraction with a combustible hydrocarbon under a pressure of between 300 and 3200 psig at a temperature of between 400° and 700° F to remove said liquid from said coke and form a hydrocarbon solution of water and a dense slurry of dry coke in said hydrocarbon suitable for burning.
Claim 2
Dependent Claim
108 words
A process for producing a coke-containing fuel, comprising coking a carbonaceous material in the liquid phase under a pressure of 300 to 3200 psig at a temperature of 400° to 700° F for 0.5 minutes to 3 hours to form gases, hot liquid and liquid-containing coke; separating said coke from said liquid and gases; drying said coke by extraction with a combustible hydrocarbon under a pressure of between 300 and 3200 psig at a temperature of between 400° and 700° F to remove said liquid from said coke and form a hydrocarbon solution of water and a dense slurry of dry coke in said hydrocarbon suitable for burning.
Claim 3
Dependent Claim
43 words
The process as in claim 1, including the further steps of cooling said hydrocarbon solution by heat exchange with cooled liquid from said coking to form a water phase and a hydrocarbon phase and recycling said hydrocarbon phase for reuse as an extractant.
Claim 4
Dependent Claim
19 words
The process as in claim 1, including the further step of preheating said carbonaceous material with said hot liquid.
Claim 5
Dependent Claim
16 words
The process of claim 1, wherein said hydrocarbon has an API gravity of 18 to 40.
Claim 6
Dependent Claim
34 words
The process of claim 1 wherein said hydrocarbon is selected from the group of cracked distillates, vacuum gas oils, light and intermediate cycle oils, raffinates from the extraction of reformed naphthas and aromatic extracts.
References Cited (Backward Citations)
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US3520067A
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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) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |