Patent US5797898A successfully refreshed from Google Patents.
Patent US4108758A successfully refreshed from Google Patents.
US4108758A
Expired / Lapsed
US
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Conversion of coal into liquid fuels
Assignee: Mobil Oil AS
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Filing: 1977-03-14
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Granted: 1978-08-22
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Expires: 1997-03-14
Abstract
Abstract This invention provides an improved process for deriving liquid fuels from coal which involves the steps of (1) solubilizing coal in a FCC residual oil to form a solvated coal solution phase and an ash solids phase; (2) subjecting the two phase admixture to FCC conversion conditions; (3) separating and recovering a hydrocarbon phase and a catalyst-ash solids phase; (4) treating the catalyst-ash solids phase in a catalyst regeneration zone, and removing entrained ash solids from the flue gas effluent of the catalyst regeneration zone; and (5) fractionating the hydrocarbon phase to recover liquid fuel products.
Inventors
- 👤 Hans-Juergen Schoennagel
- 👤 John C. Zahner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:56
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/002; C10G2400/00; C10G2400/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
117 words
In a process for converting coal into liquid fuel products by solubilizing coal in a thermally stable, highly polycyclic aromatic residual oil at a temperature in the range between about 350° F and 850° F to form a solvated coal solution containing a suspension of ash solids, the improvement which comprises charging the solvated coal solution and suspended ash solids to a fluidized catalytic cracking zone in admixture with gas oil feed under cracking conditions; separating and recovering a hydrocarbon phase and a catalyst-ash solids phase from the catalytic cracking conversion zone effluent; passing the catalyst-ash solids phase into a catalyst regeneration zone; and removing entrained ash solids from flue gas effluent of the catalyst regeneration zone.
Claim 2
Dependent Claim
117 words
In a process for converting coal into liquid fuel products by solubilizing coal in a thermally stable, highly polycyclic aromatic residual oil at a temperature in the range between about 350° F and 850° F to form a solvated coal solution containing a suspension of ash solids, the improvement which comprises charging the solvated coal solution and suspended ash solids to a fluidized catalytic cracking zone in admixture with gas oil feed under cracking conditions; separating and recovering a hydrocarbon phase and a catalyst-ash solids phase from the catalytic cracking conversion zone effluent; passing the catalyst-ash solids phase into a catalyst regeneration zone; and removing entrained ash solids from flue gas effluent of the catalyst regeneration zone.
Claim 3
Dependent Claim
26 words
A process in accordance with claim 1 wherein the thermally stable, highly polycyclic aromatic residual oil is a fluidized catalytic cracking main column bottoms residual oil.
Claim 4
Dependent Claim
20 words
A process in accordance with claim 1 wherein the fluidized catalytic cracking conversion zone is a riser type cracking zone.
Claim 5
Dependent Claim
35 words
A process in accordance with claim 1 wherein the hydrocarbon phase recovered is fractionated to separate liquid fuel products, and main column bottoms residual oil is recycled to the coal solubilization step of the process.
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) | 1981-08-21 | 1982-02-20 | 1982-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-21 | 1986-02-20 | 1986-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-21 | 1990-02-20 | 1990-08-22 | $7700.00 | Window Closed / Lapsed |