Patent US4370223A successfully refreshed from Google Patents.
US4370223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coking hydrocarbonaceous oils with an aqueous liquid
Assignee: Chevron USA Inc
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Filing: 1981-11-24
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Granted: 1983-01-25
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Expires: 2001-11-24
Abstract
Abstract A process for forming coke from an oil is disclosed, in which the oil is contacted with liquid-phase water and free oxygen at an elevated temperature and a pressure sufficient to maintain at least part of the water in the liquid phase.
Inventors
- 👤 Phillip R. Bose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:03
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04; C10G27/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
51 words
A process for producing coke from a hydrocarbonaceous oil which comprises: forming coke by contacting said oil with free oxygen in the presence of an aqueous liquid at a temperature of at least 300° C. and a pressure sufficient to maintain said aqueous liquid at least partially in the liquid phase.
Claim 2
Dependent Claim
51 words
A process for producing coke from a hydrocarbonaceous oil which comprises: forming coke by contacting said oil with free oxygen in the presence of an aqueous liquid at a temperature of at least 300° C. and a pressure sufficient to maintain said aqueous liquid at least partially in the liquid phase.
Claim 3
Dependent Claim
22 words
A process as defined in claim 1 wherein said contacting is carried out at a temperature between 315° C. and 540° C.
Claim 4
Dependent Claim
14 words
A process as defined in claim 1 wherein steam is recovered as a by-product.
Claim 5
Dependent Claim
72 words
A process as defined in claim 1 wherein at least two of said hydrocarbonaceous oil, said aqueous liquid and said free oxygen are mixed together at a temperature below about 300° C. and the temperature of the resulting mixture is increased to greater than 300° C. at least in part by heat energy supplied by reaction of at least a portion of said free oxygen with a portion of said hydrocarbonaceous oil.
Claim 6
Dependent Claim
37 words
A process as defined in claim 1 wherein at least a portion of said free oxygen is contacted with said hydrocarbonaceous oil and said aqueous liquid after said oil and said aqueous liquid have been mixed together.
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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) | 1986-01-24 | 1986-07-26 | 1987-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-24 | 1990-07-26 | 1991-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-24 | 1994-07-26 | 1995-01-25 | $7700.00 | Window Closed / Lapsed |