US2719601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of acetylene from gaseous mixtures
Assignee: BASF SE
•
Filing: 1952-04-23
•
Granted: 1955-10-04
•
Expires: 1972-04-23
Abstract
No abstract record available.
Inventors
- 👤 Bartholome Ernst
- 👤 Lehrer Erwin
- 👤 Lorenz Lothar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:56
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A METHOD FOR THE RECOVERY OF ACETYLENE FROM DILUTE ACETYLENE OBTAINED IN THE HIGH-TEMPERATURE DECOMPOSITION OF MORE SATURATED HYDROCARBON GASES WHICH COMPRISES CONTACTING THE DILUTE ACETYLENE IN AN ABSORBING ZONE UNDER A PRESSURE BETWEEN 2 AND 10 ATMOSPHERES AND AT SUBSTANTIALLY NORMAL TEMPERATURE WITH AN ORGANIC SOLVENT HAVING A BOILING POINT EXCEEDING 100* C. AND HAVING SELECTIVE DISSOLVING POWER FOR ACETYLENE, LEADING THE SOLVENT EMERGING FROM THE ABSORBING ZONE INTO THE TOP OF A SEPARATE RECTIFYING COLUMN WHILE RELEASING THE PRESSURE TO ABOUT NORMAL, ALLOWING THE SOLVENT TO DESCEND IN THE RECTIFYING COLUMN IN COUNTER-CURRENT TO THE GAS OBTAINED BY SUBJECTING THE SOLVENT EMERGING FROM THE BOTTOM OF THE RECTIFYING COLUMN IN A SEPARATE STRIPPING VESSEL TO A PRESSURE OF 0.2 TO 0.5 ATMOSPHERE AND ELEVATED TEMPERATURE BELOW THE BOILING POINT OF SAID SOLVENT, AND WITHDRAWING A STREAM OF SUBSTANTIALLY PURE ACETYLENE AT A POINT BETWEEN THE BOTTOM AND THE TOP OF THE RECTIFYING COLUMN.
Claim 2
Independent Claim
155 words
A METHOD FOR THE RECOVERY OF ACETYLENE FROM DILUTE ACETYLENE OBTAINED IN THE HIGH-TEMPERATURE DECOMPOSITION OF MORE SATURATED HYDROCARBON GASES WHICH COMPRISES CONTACTING THE DILUTE ACETYLENE IN AN ABSORBING ZONE UNDER A PRESSURE BETWEEN 2 AND 10 ATMOSPHERES AND AT SUBSTANTIALLY NORMAL TEMPERATURE WITH AN ORGANIC SOLVENT HAVING A BOILING POINT EXCEEDING 100* C. AND HAVING SELECTIVE DISSOLVING POWER FOR ACETYLENE, LEADING THE SOLVENT EMERGING FROM THE ABSORBING ZONE INTO THE TOP OF A SEPARATE RECTIFYING COLUMN WHILE RELEASING THE PRESSURE TO ABOUT NORMAL, ALLOWING THE SOLVENT TO DESCEND IN THE RECTIFYING COLUMN IN COUNTER-CURRENT TO THE GAS OBTAINED BY SUBJECTING THE SOLVENT EMERGING FROM THE BOTTOM OF THE RECTIFYING COLUMN IN A SEPARATE STRIPPING VESSEL TO A PRESSURE OF 0.2 TO 0.5 ATMOSPHERE AND ELEVATED TEMPERATURE BELOW THE BOILING POINT OF SAID SOLVENT, AND WITHDRAWING A STREAM OF SUBSTANTIALLY PURE ACETYLENE AT A POINT BETWEEN THE BOTTOM AND THE TOP OF THE RECTIFYING COLUMN.
References Cited (Backward Citations)
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Cited
US2236964A
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US2250925A
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US2374984A
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US2356986A
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US2395362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-03 | 1959-04-04 | 1959-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-03 | 1963-04-04 | 1963-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-03 | 1967-04-04 | 1967-10-04 | $7700.00 | Window Closed / Lapsed |