US4483761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Upgrading heavy hydrocarbons with supercritical water and light olefins
Assignee: SOHIO STANDARD OIL COMPANY AN OHIO CORP
•
Filing: 1983-07-05
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Granted: 1984-11-20
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Expires: 2003-07-05
Abstract
Abstract Heavy hydrocarbons are upgraded and cracked in a process comprising contacting the heavy hydrocarbons with olefins containing 5 or less carbon atoms and a solvent, at a temperature both sufficient for cracking and greater than or equal to the critical temperature of the solvent.
Inventors
- 👤 Stephen C. Paspek, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:42
CPC Classifications
C; C10; C10G; C10G9/00; C10G47/00; C10G47/32
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
54 words
A process for upgrading and cracking heavy hydrocarbons comprising adding to the heavy hydrocarbons olefins containing five or less carbon atoms and a water-containing solvent to form a mixture and subjecting the mixture to a temperature and pressure which is equal to or greater than the critical temperature and pressure of the water-containing solvent.
Claim 2
Dependent Claim
54 words
A process for upgrading and cracking heavy hydrocarbons comprising adding to the heavy hydrocarbons olefins containing five or less carbon atoms and a water-containing solvent to form a mixture and subjecting the mixture to a temperature and pressure which is equal to or greater than the critical temperature and pressure of the water-containing solvent.
Claim 3
Dependent Claim
17 words
The process of claim 1 where the heavy hydrocarbons have an I.B.P. of 200° C. and greater.
Claim 4
Dependent Claim
24 words
The process of claim 2 where the heavy hydrocarbons are selected from the group consisting of tar, bitumin, shale oil, kerogen and coal liquids.
Claim 5
Dependent Claim
26 words
The process of claim 1 where the olefins are selected from the group consisting of ethylene, propylene, butylene, butadiene, pentene and isomers and substituted derivatives thereof.
Claim 6
Dependent Claim
18 words
The process of claim 4 where the olefins are selected from the group consisting of ethylene and propylene.
Claim 7
Dependent Claim
26 words
The process of claim 1 where the temperature is between about 300° C. and about 500° C. and the pressure is greater than about 2000 psig.
Claim 8
Dependent Claim
29 words
The process of claim 6 where the temperature is between about 375° C. and about 450° C. and the pressure is greater than or equal to about 4000 psig.
Claim 9
Dependent Claim
28 words
The process of claim 1 where the contact time for the heavy hydrocarbons with the olefins and water-containing solvent is between about 1 minute and about 6 hours.
Claim 10
Dependent Claim
28 words
The process of claim 8 where the contact time for the heavy hydrocarbons with the olefins and water-containing solvent is between about 3 minutes and about 3 hours.
Claim 11
Dependent Claim
28 words
The process of claim 9 where the contact time for the heavy hydrocarbons with the olefins and water-containing solvent is between about 5 minutes and about 1 hour.
Claim 12
Dependent Claim
22 words
The process of claim 1 where the weight ratio of heavy hydrocarbons to light olefins is between about 100:1 and about 1:1.
Claim 13
Dependent Claim
22 words
The process of claim 11 where the weight ratio of heavy hydrocarbons to light olefins is between about 80:1 to about 3:1.
Claim 14
Dependent Claim
22 words
The process of claim 12 where the weight ratio of heavy hydrocarbons to light olefins is between about 10:1 and about 5:1.
Claim 15
Dependent Claim
23 words
The process of claim 1 where the weight ratio of water-containing solvent to heavy hydrocarbons is greater than or equal to about 0.25:1.
Claim 16
Dependent Claim
22 words
The process of claim 14 where the weight ratio of water-containing solvent to heavy hydrocarbons is between about 1:1 to about 2:1.
Claim 17
Dependent Claim
18 words
The process of claim 1 where the process is conducted in a batch or a continuous flow reactor.
Claim 18
Dependent Claim
42 words
The process of claim 1 where the water-containing solvent contains a member selected from the group consisting of carbon dioxide, ammonia, water, alcohols, benzene, toluene, dichlorodiflouromethane, nitrous oxide, diethyl ether, sulfur dioxide, carbon disulfide, tetrahydrofuran, acetone, pyridine, methyl chloride and mixtures thereof.
Claim 19
Dependent Claim
12 words
The process of claim 17 where the water-containing solvent contains an alcohol.
Claim 20
Dependent Claim
50 words
In a process for upgrading and cracking heavy hydrocarbons where the heavy hydrocarbons are contacted with a cracking medium at the critical temperature and pressure of the medium, the improvement comprising adding to the medium olefins containing five or less carbon atoms prior to upgrading and cracking the heavy hydrocarbons.
Claim 21
Dependent Claim
50 words
In a process for upgrading and cracking heavy hydrocarbons where the heavy hydrocarbons are contacted with a cracking medium at the critical temperature and pressure of the medium, the improvement comprising adding to the medium olefins containing five or less carbon atoms prior to upgrading and cracking the heavy hydrocarbons.
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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) | 1987-11-20 | 1988-05-21 | 1988-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-20 | 1992-05-21 | 1992-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-20 | 1996-05-21 | 1996-11-20 | $7700.00 | Window Closed / Lapsed |