Patent US2838133A successfully refreshed from Google Patents.
US2838133A
Expired / Lapsed
US
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Purification of acetylene
Assignee: MW Kellogg Co
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Filing: 1955-06-22
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Granted: 1958-06-10
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Expires: 1975-06-22
Abstract
No abstract record available.
Inventors
- 👤 Warren C Schreiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:23
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/02; C07C4/04; B; B01; B01D; B01D53/00; B01D53/14; B01D53/1406; B01D53/1487; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
IN A PROCESS FOR THE PREPARATION OF ACETYLENE BY THE PYROLYSIS OF HYDROCARBONS IN WHICH THE GASEOUS REACTION PRODUCT CONTAINS IMPURITIES OF A POLYMEROZABLE NATURE THE METHOD OF SEPARATING SAID IMPURTIES FROM GASES WITH A MINIMUM OF POLYMERIZATION WHICH COMPRISES CONTACTING THE PRODUCT GASES IN AN ABSORPTION ZONE WITH A SOLVENT UNDER SUITABLE CONDITIONS TO ABSORB THE IMPURITIES AND A MINIMUM PROPORTION OF THE ACETYLENE FROM SAID GASES, CONTACTING THE BOTTOMS FROM THE ABSORPTION ZONE WITH BETWEEN ABOUT 0.5 AND ABOUT 2.0 MOLS OF AN INERT GAS PER MOL OF ABSORBED GAS IN A FIRST STRIPPING ZONE FOR THE REMOVAL OF ABSORBED ACETYLENE AND FURTHER CONTACTING THE ABSORBENT IN THE PRESENCE OF WATER WITH BETWEEN ABOUT 5 AND ABOUT 20 MOLS OF INERT PER MOL OF ABSORBED GAS IN A SECOND STRIPPING ZONE AT A TEMPERATURE BELOW THE BOILING POINT OF WATER TO REMOVE THE IMPURITIES CONTAINED THEREIN.
Claim 2
Dependent Claim
148 words
IN A PROCESS FOR THE PREPARATION OF ACETYLENE BY THE PYROLYSIS OF HYDROCARBONS IN WHICH THE GASEOUS REACTION PRODUCT CONTAINS IMPURITIES OF A POLYMEROZABLE NATURE THE METHOD OF SEPARATING SAID IMPURTIES FROM GASES WITH A MINIMUM OF POLYMERIZATION WHICH COMPRISES CONTACTING THE PRODUCT GASES IN AN ABSORPTION ZONE WITH A SOLVENT UNDER SUITABLE CONDITIONS TO ABSORB THE IMPURITIES AND A MINIMUM PROPORTION OF THE ACETYLENE FROM SAID GASES, CONTACTING THE BOTTOMS FROM THE ABSORPTION ZONE WITH BETWEEN ABOUT 0.5 AND ABOUT 2.0 MOLS OF AN INERT GAS PER MOL OF ABSORBED GAS IN A FIRST STRIPPING ZONE FOR THE REMOVAL OF ABSORBED ACETYLENE AND FURTHER CONTACTING THE ABSORBENT IN THE PRESENCE OF WATER WITH BETWEEN ABOUT 5 AND ABOUT 20 MOLS OF INERT PER MOL OF ABSORBED GAS IN A SECOND STRIPPING ZONE AT A TEMPERATURE BELOW THE BOILING POINT OF WATER TO REMOVE THE IMPURITIES CONTAINED THEREIN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |