US3748082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for cracking and burning hydrocarbons
Assignee: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Filing: 1972-01-27
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Granted: 1973-07-24
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Expires: 1992-01-27
Abstract
Abstract Hydrocarbons are cracked and burned by forming a combustible mixture of a fuel gas and a combustion-supporting gas, establishing a central stream of hydrocarbons to be cracked and burned, surrounding said stream of hydrocarbons with said combustible mixture, directing an annular stream of gas richer in oxygen than air between said central stream and said combustible mixture, and combusting the combined streams. The luminosity of the flame is thereby increased and the quantity of carbon black which is produced is also increased.
Inventors
- 👤 A Ivernel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:32
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; B; B01; B01J; B01J19/00; F; F23; F23D; F23D14/00; Y; Y02; Y02E; Y02E20/00; Y02E20/34
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
18 words
A method as claimed in claim 1, and deflecting said annular stream radially outwardly of said central stream.
Claim 2
Dependent Claim
26 words
A method as claimed in claim 2, and imparting to said stream of gas richer in oxygen an outwardly conical path immediately prior to said coMbustion.
Claim 3
Dependent Claim
21 words
A method as claimed in claim 3, in which said outwardly conical path is imparted along an outwardly conical solid surface.
Claim 4
Dependent Claim
17 words
A method as claimed in claim 1, said gas richer in oxygen being air enriched in oxygen.
Claim 5
Dependent Claim
14 words
A method as claimed in claim 1, in which said combustion-supporting gas is air.
Claim 6
Dependent Claim
26 words
A method as claimed in claim 6, in which said gas richer in oxygen than air contains about 4% of the total volume of oxygen utilized.
Claim 7
Dependent Claim
26 words
A method as claimed in claim 1, in which said gas richer in oxygen than air contains about 4% of the total volume of oxygen utilized.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |