US3992277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the manufacture of a gas mixture containing acetylene, ethylene, methane and hydrogen, by thermal cracking of liquid hydrocarbons
Assignee: BASF SE
•
Filing: 1975-01-14
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Granted: 1976-11-16
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Expires: 1995-01-14
Abstract
Abstract A process for the manufacture of a gas mixture containing acetylene, ethylene, methane and hydrogen by cracking a liquid hydrocarbon by means of a plurality of arcs burning under the surface of the liquid hydrocarbon and limited, in their electrical effect, by current-limiting elements, wherein the total energy acting on the system is distributed by an arrangement of the electrical components, which is responsible for the stability of the arcs, over a plurality of localized burning points, the current-limiting components being matched to the voltage so that the output of each individual arc on average does not exceed 1.2 kW.
Inventors
- 👤 Hans-Georg Trieschmann
- 👤 Horst Rosewicz
- 👤 Gerhard Jansen
- 👤 Dieter Ballweber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:46
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/32; H01J37/32009; H01J37/32055; C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/342; C10; C10G; C10G15/00; C10G15/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
134 words
A process for the manufacture of a gas mixture containing as major components, acetylene, ethylene, methane and hydrogen which comprises: cracking a liquid hydrocarbon by means of a plurality of arcs burning under the surface of the liquid hydrocarbon, said arcs being produced between stationary electrodes, and limited, in their electrical effect, by the use of chokes or condensers as current-limiting elements, wherein the total energy acting on the system is distributed by an arrangement of the electrical components, which is responsible for the stability of the arcs, over a plurality of localized burning points, the current-limiting elements being matched to the voltage so that the output of each individual arc on average does not exceed 0.7 kW, and wherein voltages of from 3 to 10 kV are used to carry out the process.
Claim 2
Dependent Claim
134 words
A process for the manufacture of a gas mixture containing as major components, acetylene, ethylene, methane and hydrogen which comprises: cracking a liquid hydrocarbon by means of a plurality of arcs burning under the surface of the liquid hydrocarbon, said arcs being produced between stationary electrodes, and limited, in their electrical effect, by the use of chokes or condensers as current-limiting elements, wherein the total energy acting on the system is distributed by an arrangement of the electrical components, which is responsible for the stability of the arcs, over a plurality of localized burning points, the current-limiting elements being matched to the voltage so that the output of each individual arc on average does not exceed 0.7 kW, and wherein voltages of from 3 to 10 kV are used to carry out the process.
Claim 3
Dependent Claim
23 words
A process as set forth in claim 1 wherein said liquid hydrocarbons are hydrocarbons having boiling points of not less than 35° C.
Claim 4
Dependent Claim
26 words
A process as set forth in claim 2 wherein the liquid hydrocarbons are light naptha, light fuel oil, heavy fuel oil, gas oil, and crude oil.
Claim 5
Dependent Claim
20 words
A process as set forth in claim 2 wherein the hydrocarbons are heated to a temperature below their evaporation point.
Claim 6
Dependent Claim
17 words
A process as set forth in claim 1 wherein the voltage is from 4 to 7 kV.
References Cited (Backward Citations)
US1872297A
Cited
US2900321A
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US2878177A
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US3519551A
Cited
US3607714A
Cited
US3682807A
Cited
US3720694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-16 | 1980-05-17 | 1980-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-16 | 1984-05-17 | 1984-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-16 | 1988-05-17 | 1988-11-16 | $7700.00 | Window Closed / Lapsed |