US3954599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing cracked gas and cracked oil from heavy hydrocarbons
Assignee: Osaka Gas Co Ltd
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Filing: 1974-03-05
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Granted: 1976-05-04
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Expires: 1994-03-05
Abstract
Abstract In producing cracked gas and cracked oil by thermally cracking a heavy hydrocarbon within a reactor in which a granular solid, steam and oxygen form a fluidized bed or moving bed, a process which is characterized in that the heavy hydrocarbon is supplied to the upper portion of the reactor and part of the granular solid is discharged from the bottom of the reactor and thereafter fed again to the upper portion of the reactor, to thereby maintain the upper portion at a temperature of not higher than 550°C.
Inventors
- 👤 Isami Ooka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:35
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/28
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
100 words
In producing cracked gas and cracked oil by thermally cracking a heavy hydrocarbon within a reactor into the lower portion of which are introduced steam and oxygen so as to flow countercurrently to a moving bed comprising a granular solid, a process which comprises supplying the heavy hydrocarbon to the upper portion of the reactor from above the moving bed, discharging part of the granular solid from the bottom of the reactor and thereafter feeding it again to the upper portion of the reactor, to thereby maintain the upper portion of said reactor at a temperature of up to 550°C.
Claim 2
Dependent Claim
100 words
In producing cracked gas and cracked oil by thermally cracking a heavy hydrocarbon within a reactor into the lower portion of which are introduced steam and oxygen so as to flow countercurrently to a moving bed comprising a granular solid, a process which comprises supplying the heavy hydrocarbon to the upper portion of the reactor from above the moving bed, discharging part of the granular solid from the bottom of the reactor and thereafter feeding it again to the upper portion of the reactor, to thereby maintain the upper portion of said reactor at a temperature of up to 550°C.
Claim 3
Dependent Claim
25 words
The method according to Claim 1, in which said temperature of upper portion of the reactor is maintained in the range of 350 to 450°C.
Claim 4
Dependent Claim
23 words
The method according to claim 1, in which said granular solid is in the range of 0.1 to 10 mm in grain size.
Claim 5
Dependent Claim
31 words
The method according to claim 1, in which the amount of said granular solid to be charged into the reactor is 0.2 to 5 times the weight of the heavy hydrocarbon.
Claim 6
Dependent Claim
24 words
The method according to claim 4, in which said amount of granular solid is 0.8 to 1.5 times the weight of the heavy hydrocarbon.
Claim 7
Dependent Claim
28 words
The method according to Claim 1, in which said granular solid to be recycled to the upper portion of the reactor has a temperature of 200 to 400°C.
Claim 8
Dependent Claim
29 words
The method according to claim 1, in which the amount of said oxygen to be supplied into the reactor is at least 10 wt.%, based on the heavy hydrocarbon.
Claim 9
Dependent Claim
18 words
The method according to claim 7, in which said amount of the oxygen is 10 to 20 wt.%.
Claim 10
Dependent Claim
30 words
The method according to Claim 1, in which the amount of said steam to be supplied into the reactor is at least 0.5 mole per mole of the oxygen used.
Claim 11
Dependent Claim
24 words
The method according to claim 9, in which said amount of the steam is 1.0 to 1.5 moles per mole of the oxygen used.
References Cited (Backward Citations)
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US2662005A
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US2784068A
Cited
US2906792A
Cited
US3259565A
Cited
US3202603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |