US2753012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for separating acetylenic components from mixtures
Assignee: Pure Oil Co
•
Filing: 1954-07-23
•
Granted: 1956-07-03
•
Expires: 1974-07-23
Abstract
No abstract record available.
Inventors
- 👤 Thodos George
- 👤 Leroy F Stutzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:07
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A PROCESS FOR SEPARATING AND RECOVERING ACETYLENES FROM A GASEOUS MIXTURE CONTAINING THE SAME WHICH COMPRISES THE STEPS OF CONTAINING THE MIXTURE WITH A SOLVENT SELECTIVE FOR SAID ACETYLENES, HEATING THE RESULTING ACETYLENES-ENRICHED SOLVENT TO A TEMPERATURE SUFFICIENT TO VAPORIZE ABSORBED HYDROCARBONS, MAINTAINING A BODY OF SAID HEATED ACETYLENES IN ENRICHED SOLVENT, COUNTERCURRENTLY CONTACTING VAPORS PRODUCED FROM SAID BODY IN A CONTACTING ZONE WITH FRESH SOLVENT AND SEPARATING THE ACETYLENIC HYDROCARBON OF HIGHEST VOLATILITY THEREIN FROM ACETYLENIC HYDROCARBONS OF LOWER VOLATILITY, REMOVING SAID LESS VOLATILE ACETYLENIC HYDROCARBONS FROM SOLVENT IN A SEPARATE STRIPPING ZONE AND RECYCLING SAID LESS VOLATILE ACETYLENIC HYDROCARBON VAPORS TO SAID BODY OF HEATED ACETYLENES IN ENRICHED SOLVENT, RECYCLING STRIPPED SOLVENT TO SAID CONTACTING ZONE AND CONTINUING SAID PROCESS UNTIL SUBSTANTIALLY ALL OF THE HYDROCARBON OF HIGHEST VOLATILITY IS SEPARATED AND RECOVERED AND UNTIL THE OTHER ACETYLENIC COMPONENTS ARE SUCCESSIVELY SEPARATED AS FRACTIONS AND RECOVERED.
Claim 2
Dependent Claim
148 words
A PROCESS FOR SEPARATING AND RECOVERING ACETYLENES FROM A GASEOUS MIXTURE CONTAINING THE SAME WHICH COMPRISES THE STEPS OF CONTAINING THE MIXTURE WITH A SOLVENT SELECTIVE FOR SAID ACETYLENES, HEATING THE RESULTING ACETYLENES-ENRICHED SOLVENT TO A TEMPERATURE SUFFICIENT TO VAPORIZE ABSORBED HYDROCARBONS, MAINTAINING A BODY OF SAID HEATED ACETYLENES IN ENRICHED SOLVENT, COUNTERCURRENTLY CONTACTING VAPORS PRODUCED FROM SAID BODY IN A CONTACTING ZONE WITH FRESH SOLVENT AND SEPARATING THE ACETYLENIC HYDROCARBON OF HIGHEST VOLATILITY THEREIN FROM ACETYLENIC HYDROCARBONS OF LOWER VOLATILITY, REMOVING SAID LESS VOLATILE ACETYLENIC HYDROCARBONS FROM SOLVENT IN A SEPARATE STRIPPING ZONE AND RECYCLING SAID LESS VOLATILE ACETYLENIC HYDROCARBON VAPORS TO SAID BODY OF HEATED ACETYLENES IN ENRICHED SOLVENT, RECYCLING STRIPPED SOLVENT TO SAID CONTACTING ZONE AND CONTINUING SAID PROCESS UNTIL SUBSTANTIALLY ALL OF THE HYDROCARBON OF HIGHEST VOLATILITY IS SEPARATED AND RECOVERED AND UNTIL THE OTHER ACETYLENIC COMPONENTS ARE SUCCESSIVELY SEPARATED AS FRACTIONS AND RECOVERED.
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) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |