US3617474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low sulfur fuel oil from coal
Assignee: HRI Inc
•
Filing: 1970-06-10
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Granted: 1971-11-02
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Expires: 1990-06-10
Abstract
Abstract The economic production of a low sulfur residual fuel oil by the hydroconversion of coal is accomplished in an ''''ebullated'''' bed system in the absence of downstream processing and the use of a minimum of hydrogen to produce a fuel of high B.t.u. value and low sulfur content.
Inventors
- 👤 Harold H Stotler
- 👤 Michael Calderon
- 👤 Clarence A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:06
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/08; C10G1/083
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
26 words
The process of claim 1 in which the reaction zone contains an ebullated bed of particulated solids wherein said particulated solids comprise cobalt molybdate on alumina.
Claim 2
Dependent Claim
24 words
The process of claim 1 in which the reaction zone contains an ebullated bed of particulated solids wherein said particulated solids comprise activated alumina.
Claim 3
Dependent Claim
171 words
The process of producing a low sulfur fuel oil comprising less than about 1 percent of sulfur by the hydrogenation of a coal comprising greater than one weight percent of sulfur which comprises: a. passIng an oil-coal slurry upwardly through a reaction zone operating under a hydrogen partial pressure between about 800 and about 2,500 p.s.i. and under a temperature between about 800 and about 900* F.; b. consuming hydrogen, in the reaction zone, at a rate of at least 2 standard cubic feet (s.c.f.) and not to exceed 10 s.c.f. per pound of coal; c. maintaining a space velocity between about 75 and about 200 lbs. of coal per hour per cubic foot of the reaction zone; d. removing a coal effluent which comprises gases, liquids, ash, and unconverted coal solids; e. separating a solids containing fraction from said effluent; and f. recovering a hydrocarbon fraction boiling above about 900* F. plus, the volume of which is at least 1 barrel per ton of coal fed to the reaction zone.
Claim 4
Dependent Claim
26 words
The process of claim 4 in which the reaction zone contains an ebullated bed of particulated solids wherein said particulated solids comprise cobalt molybdate on alumina.
Claim 5
Dependent Claim
24 words
The process of claim 4 in which the reaction zone contains an ebullated bed of particulated solids wherein said particulated solids comprise activated alumina.
Claim 6
Dependent Claim
28 words
The process of claim 4 wherein the hydrocarbon fraction boiling above about 900* F. plus is allowed to solidify and ground for use as a particulate solid fuel.
Claim 7
Dependent Claim
21 words
The process of claim 1 wherein the hydrogen partial pressure is about 1,890 p.s.i. and the temperature is about 850* F.
Claim 8
Dependent Claim
21 words
The process of claim 4 wherein the hydrogen partial pressure is about 1,890 p.s.i. and the temperature is about 850* F.
References Cited (Backward Citations)
US3183180A
Cited
US3321393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |