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US3696166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of thermal cracking of hydrocarbons
Assignee: Individual
•
Filing: 1970-06-15
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Granted: 1972-10-03
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Expires: 1990-06-15
Abstract
Abstract Thermal cracking apparatus in which the reaction transfer, quenching and separation are carried out in circulating molten metals which are maintained molten by circulation through a preheater tube prior to circulation through the reaction tube. The preheater tube and the reaction tube are heated by burners. Feed stock or a diluent such as steam is sprayed into the quenching tower through the reaction tube to assist the circulation.
Inventors
- 👤 Tokuji Ozawa
- 👤 Mikio Uyeda
- 👤 Ryosuke Hashimoto
- 👤 Shigenori Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:46
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/34; C10G2400/00; C10G2400/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
15 words
A process according to claim 1 wherein steam is introduced with the hydrocarbon feed stock.
Claim 2
Dependent Claim
13 words
A process according to claim 1 wherein said reaction tube is externally heated.
Claim 3
Dependent Claim
30 words
A process according to claim 1 wherein molten metal is withdrawn from said quenching zone, heated to a temperature of at least 700* C. and recycled to said reaction tube.
Claim 4
Dependent Claim
39 words
A process according to claim 1 wherein molten metal is withdrawn from said quenching zone and recycled to said reaction tube through a conduit, and wherein said reaction tube and said conduit containing recycled molten metal are heated externally.
Claim 5
Dependent Claim
15 words
A process according to claim 5 wherein steam is introduced with the hydrocarbon feed stock.
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |