US2665315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorptive distillation
Assignee: Standard Oil Development Co
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Filing: 1951-03-19
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Granted: 1954-01-05
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Expires: 1971-03-19
Abstract
No abstract record available.
Inventors
- 👤 Walter A Herbst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:20
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/06; C10G25/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
THE METHOD OF SEPARATING HYDROCARBONS WHICH FORM CLOSE-BOILING MIXTURE DIFFICULT TO SEPARATE BY ORDINARY FRACTIONAL DISTILLATION, WHICH COMPRISES CONTINUOUSLY INTRODUCING A FEED MIXTURE OF SAID HYDROCARBONS TO A FRACTIONAL DISTILLATION ZONE WHEREIN VAPORS OF SAID HYDROCARBONS ASCEND COUNTERCURRENTLY TO A SLURRY OF A SOLID ADSORBENT IN LIQUID REFLUX TO EFFECT VAPORIZATION OF THE HYDROCARBON COMPONENT RENDERED MORE VOLATILE, CONTINUOUSLY REMOVING VAPOR OF THE MORE VOLATILE HYDROCARBON COMPONENT OVERHEAD FROM THE FRACTIONAL DISTILLATION ZONE, AND REMOVING A SLURRY OF THE SOLID ADSORBENT IN THE LESS VOLATILE HYDROCARBON COMPONENT AS BOTTOMS THE WEIGHT RATION OF SAID SOLID ADSORBENT IN SAID DISTILLATION ZONE TO SAID FEED MIXTURE BEING MAINTAINED ABOVE ABOUT 100%.
Claim 2
Independent Claim
109 words
THE METHOD OF SEPARATING HYDROCARBONS WHICH FORM CLOSE-BOILING MIXTURE DIFFICULT TO SEPARATE BY ORDINARY FRACTIONAL DISTILLATION, WHICH COMPRISES CONTINUOUSLY INTRODUCING A FEED MIXTURE OF SAID HYDROCARBONS TO A FRACTIONAL DISTILLATION ZONE WHEREIN VAPORS OF SAID HYDROCARBONS ASCEND COUNTERCURRENTLY TO A SLURRY OF A SOLID ADSORBENT IN LIQUID REFLUX TO EFFECT VAPORIZATION OF THE HYDROCARBON COMPONENT RENDERED MORE VOLATILE, CONTINUOUSLY REMOVING VAPOR OF THE MORE VOLATILE HYDROCARBON COMPONENT OVERHEAD FROM THE FRACTIONAL DISTILLATION ZONE, AND REMOVING A SLURRY OF THE SOLID ADSORBENT IN THE LESS VOLATILE HYDROCARBON COMPONENT AS BOTTOMS THE WEIGHT RATION OF SAID SOLID ADSORBENT IN SAID DISTILLATION ZONE TO SAID FEED MIXTURE BEING MAINTAINED ABOVE ABOUT 100%.
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) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |