US4080285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal cracking of shale oil
Assignee: Gulf Research and Development Co
•
Filing: 1976-07-12
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Granted: 1978-03-21
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Expires: 1996-07-12
Abstract
Abstract A process for the non-catalytic riser cracking of shale oil to produce ethylene in the presence of entrained hot, inert solids.
Inventors
- 👤 Joel Drexler McKinney
- 👤 Raynor T. Sebulsky
- 👤 Francis Edmund Wynne, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:47
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/28; C10G9/32; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/921; Y10S585/924; Y10S585/926
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
80 words
A process for thermal cracking of retorted nickel and vanadium ash-containing shale oil residue to produce a product including hydrogen, ethylene, propylene and 1,3-butadiene which also includes at least 40 weight percent liquids comprising passing retorted shale oil and entrained inert hot solids through a cracking zone at a temperature between 1,430° and 2,500° F. for a residence time of 0.05 to 0.5 seconds, and quenching said product to a temperature below 1,300° F. immediately upon leaving said cracking zone.
Claim 2
Dependent Claim
80 words
A process for thermal cracking of retorted nickel and vanadium ash-containing shale oil residue to produce a product including hydrogen, ethylene, propylene and 1,3-butadiene which also includes at least 40 weight percent liquids comprising passing retorted shale oil and entrained inert hot solids through a cracking zone at a temperature between 1,430° and 2,500° F. for a residence time of 0.05 to 0.5 seconds, and quenching said product to a temperature below 1,300° F. immediately upon leaving said cracking zone.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein non-hydrotreated shale oil is cracked.
Claim 4
Dependent Claim
11 words
The process of claim 1 wherein non-filtered shale oil is cracked.
Claim 5
Dependent Claim
14 words
The process of claim 1 wherein the pressure is between 3 and 100 psig.
Claim 6
Dependent Claim
14 words
The process of claim 1 wherein the temperature is between 1,430° and 2,000° F.
Claim 7
Dependent Claim
19 words
The process of claim 1 wherein the weight ratio of solids to shale oil is between 4:1 and 100:1.
Claim 8
Dependent Claim
17 words
The process of claim 1 wherein said solids contain at least 80 percent of process heat requirements.
Claim 9
Dependent Claim
21 words
The process of claim 1 including an external coke burner zone utilizing continuous circulation of solids through the coke burner zone.
Claim 10
Dependent Claim
13 words
The process of claim 1 wherein the cracking zone comprises a vertical riser.
Claim 11
Dependent Claim
15 words
The process of claim 1 wherein said product includes at least 50 weight percent liquids.
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) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |