US3260057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two stage rectification process for separating a mixture of ethane, ethylene and acetylene
Assignee: Linde GmbH
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Filing: 1961-07-05
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Granted: 1966-07-12
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Expires: 1981-07-05
Abstract
No abstract record available.
Inventors
- 👤 Becker Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:14
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/04; F; F25; F25J; F25J3/00; F25J3/02; F25J3/0204; F25J3/0219; F25J3/0228; F25J3/0233; F25J3/0238; F25J2200/00; F25J2200/02; F25J2200/10; F25J2200/30; F25J2200/34; F25J2200/40; F25J2200/70; F25J2200/72; F25J2200/76; F25J2200/78; F25J2205/00; F25J2205/30; F25J2210/00; F25J2210/12; F25J2210/14; F25J2215/00; F25J2215/62; F25J2270/00; F25J2270/02; Y; Y02; Y02P; Y02P20/00; Y02P20/151
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A PROCESS FOR SEPARATING A C2 HYDROCARBON TERNARY MIXTURE OF ETHANE, ETHYLENE AND ACETYLENE, WHICH PROCESS COMPRISES THE STEPS OF: (1) RECTIFYING SAID TERNARY MIXTURE IN A FIRST DISTILLATION COLUMN AND WITHDRAWING THEREFROM A BOTTOMS PRODUCT FRACTION CONSISTING ESSENTIALLY OF ETHANE, AN OVERHEAD PRODUCT FRACTION CONSISTING ESSENTIALLY OF ETHYLENE, AND A SIDE STREAM CONSISTING OF ETHYLENE IN A PREPONDERANT AMOUNT, AND ACETYLENE AND ETHANE IN A RATIO OF 1:1 TO 7:1 RESPECTIVELY; (2) RECTIFYING SAID SIDE STREAM IN A SECOND DISTILLATION COLUMN AND WITHDRAWING THEREFROM A BOTTOMS FRACTION HIGHLY ENRICHED IN ACETYLENE AND AN OVERHEAD FRACTION; AND (3) RECYCLING SAID OVERHEAD FRACTION FROM THE SECOND DISTILLATION COLUMN TO A POINT IN THE FIRST DISTILLATION COLUMN NEAR THE POINT AT WHICH SAID SIDE STREAM IS WITHDRAWN.
Claim 2
Dependent Claim
125 words
A PROCESS FOR SEPARATING A C2 HYDROCARBON TERNARY MIXTURE OF ETHANE, ETHYLENE AND ACETYLENE, WHICH PROCESS COMPRISES THE STEPS OF: (1) RECTIFYING SAID TERNARY MIXTURE IN A FIRST DISTILLATION COLUMN AND WITHDRAWING THEREFROM A BOTTOMS PRODUCT FRACTION CONSISTING ESSENTIALLY OF ETHANE, AN OVERHEAD PRODUCT FRACTION CONSISTING ESSENTIALLY OF ETHYLENE, AND A SIDE STREAM CONSISTING OF ETHYLENE IN A PREPONDERANT AMOUNT, AND ACETYLENE AND ETHANE IN A RATIO OF 1:1 TO 7:1 RESPECTIVELY; (2) RECTIFYING SAID SIDE STREAM IN A SECOND DISTILLATION COLUMN AND WITHDRAWING THEREFROM A BOTTOMS FRACTION HIGHLY ENRICHED IN ACETYLENE AND AN OVERHEAD FRACTION; AND (3) RECYCLING SAID OVERHEAD FRACTION FROM THE SECOND DISTILLATION COLUMN TO A POINT IN THE FIRST DISTILLATION COLUMN NEAR THE POINT AT WHICH SAID SIDE STREAM IS WITHDRAWN.
References Cited (Backward Citations)
US2582443A
Cited
US2717232A
Cited
US2817216A
Cited
US2715604A
Cited
US2901404A
Cited
US2909576A
Cited
US3073129A
Cited
US3091095A
Cited
US3004629A
Cited
US3087310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |