US4115246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil conversion process
Assignee: ConocoPhillips Co
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Filing: 1977-01-31
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Granted: 1978-09-19
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Expires: 1997-01-31
Abstract
Abstract A hydrogen donor diluent cracking process for upgrading a heavy liquid hydrocarbon wherein pitch fractionated from the cracked products is subjected to a partial oxidation process to reduce the amount of pitch and to provide hydrogen for hydrogenation of hydrogen donor diluent for the cracking step.
Inventors
- 👤 Glenn A. Sweany
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:05
CPC Classifications
C; C10; C10G; C10G45/00; C10G2300/00; C10G2300/10; C10G2300/107
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
130 words
In a hydrogen donor diluent cracking process wherein heavy liquid hydrocarbon oil is charged to a thermal cracker and thermally cracked in the presence of a hydrogenated donor solvent, the thermally cracked material is fractionated to produce fractions comprising light ends, intermediate distillates, gas oil material and a pitch product boiling above 500° C., and wherein at least a part of the product gas oil material is hydrogenated and recycled to the thermal cracking step as hydrogen donor solvent, the improvement comprising: subjecting a portion of the fresh hydrocarbon oil feed to the process and said pitch product after fractionation to a partial oxidation process thereby producing a product gas stream containing hydrogen, and utilizing said hydrogen to hydrogenate said hydrogen donor solvent for recycle to said thermal cracking step.
Claim 2
Dependent Claim
130 words
In a hydrogen donor diluent cracking process wherein heavy liquid hydrocarbon oil is charged to a thermal cracker and thermally cracked in the presence of a hydrogenated donor solvent, the thermally cracked material is fractionated to produce fractions comprising light ends, intermediate distillates, gas oil material and a pitch product boiling above 500° C., and wherein at least a part of the product gas oil material is hydrogenated and recycled to the thermal cracking step as hydrogen donor solvent, the improvement comprising: subjecting a portion of the fresh hydrocarbon oil feed to the process and said pitch product after fractionation to a partial oxidation process thereby producing a product gas stream containing hydrogen, and utilizing said hydrogen to hydrogenate said hydrogen donor solvent for recycle to said thermal cracking step.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein said partial oxidation process is carried out utilizing air as the oxidizing gas.
Claim 4
Dependent Claim
22 words
The process of claim 1 wherein said partial oxidation process is carried out utilizing air enriched with oxygen as the oxidizing gas.
Claim 5
Dependent Claim
19 words
The process of claim 1 wherein said partial oxidation process is carried out utilizing oxygen as the oxidizing gas.
Claim 6
Dependent Claim
15 words
The process of claim 1 wherein said pitch product is a 535° C. + material.
Claim 7
Dependent Claim
23 words
The process of claim 1 wherein a portion of said product gas stream is utilized to hydrotreat material other than recycle donor solvent.
Claim 8
Dependent Claim
32 words
The process of claim 1 wherein at least a part of said product gas stream is subjected to a shift reaction whereby the hydrogen concentration of said product gas stream is increased.
Claim 9
Dependent Claim
18 words
The process of claim 1 wherein said hydrocarbon oil is a vacuum residual oil from a petroleum refinery.
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) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |