Patent US3941681A successfully refreshed from Google Patents.
US3941681A
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Process for converting inferior heavy oil into light oil and gasifying the same
Assignee: Mitsui Engineering and Shipbuilding Co Ltd
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Filing: 1974-12-11
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Granted: 1976-03-02
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Expires: 1994-12-11
Abstract
Abstract A process for converting inferior heavy oil into light oil and gasifying the same characterized in that a hydrocracking zone comprising coke fluidized bed and a gasification zone comprising a molten alkali salt are provided, the raw oil is fed in said hydrocracking zone to be hydrocracked and produce coke to form a fludized bed, and a part of the raw oil is fed in said gasification zone for obtaining the fluidizing gas.
Inventors
- 👤 Hitoshi Saegusa
- 👤 Masami Yoshitake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:46
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C10; C10G; C10G47/00; C10G47/24; C10G47/30; C10G69/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
124 words
A process for converting inferior heavy oil into light oil and gasifying the same, comprising the steps of providing a hydrocracking zone comprising coke fluidized bed and a gasification zone comprising a molten alkali salt, feeding said inferior heavy oil into said hydrocracking zone, introducing produced gas into said hydrocracking zone to hydrocrack said raw inferior heavy oil in a high-hydrogen atmosphere, feeding the by-produced coke in said gasification zone together with a part of the circulating hydrogen and steam, feeding a part of said raw inferior heavy oil into said gasification none, to gasify the same with oxygen and steam in the molten salt, and feeding obtained high temperature gas into the hydrocracking zone for obtaining the fluidizing gas and sensible heat thereof.
Claim 2
Dependent Claim
124 words
A process for converting inferior heavy oil into light oil and gasifying the same, comprising the steps of providing a hydrocracking zone comprising coke fluidized bed and a gasification zone comprising a molten alkali salt, feeding said inferior heavy oil into said hydrocracking zone, introducing produced gas into said hydrocracking zone to hydrocrack said raw inferior heavy oil in a high-hydrogen atmosphere, feeding the by-produced coke in said gasification zone together with a part of the circulating hydrogen and steam, feeding a part of said raw inferior heavy oil into said gasification none, to gasify the same with oxygen and steam in the molten salt, and feeding obtained high temperature gas into the hydrocracking zone for obtaining the fluidizing gas and sensible heat thereof.
Claim 3
Dependent Claim
34 words
A process for converting inferior heavy oil into light oil and gasifying the same in accordance with claim 1 in which said hydrocracking zone and gasification zone are provided in a single reaction vessel.
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) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |