US2722113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionation process
Assignee: Shell Development Co
•
Filing: 1951-10-09
•
Granted: 1955-11-01
•
Expires: 1971-10-09
Abstract
No abstract record available.
Inventors
- 👤 Philip H Deming
- 👤 Malcolm L Sagenkahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:57
CPC Classifications
C; C10; C10G; C10G5/00; C10G5/06; B; B01; B01D; B01D3/00; B01D3/14; B01D3/143; B01D3/146; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A PROCESS OF SEPARATING CONSTITUENTS OF A VAPOROUS MIXTURE (A) BY FRACTIONAL DISTILLATION COMPRISING THE STEPS OF PRECOOLING AND PARTIALLY CONDENSING THE VAPOROUS MIXTURE (A) BY HEAT EXCHANGE AGAINST AN EXPANSIONCOOLED PORTION (B) OF A LIQUID BOTTOMS FRACTION (C) PRODUCED IN THE PROCESS, AS DESCRIBED HEREINAFTER, SUBJECTING THE RESULTING PARTIALLY CONDENSED MIXTURE (D) TO FRACTIONAL DISTILLATION IN A FRACTIONATION OPERATION, SEPARATELY WITHDRAWING THEREFROM A VAPOR FRACTION (F) AND A LIQUID BOTTOMS FRACTION (C), THE TEMPERATURE T1 OF THE VAPOR FRACTION BEING LOWER THAN THE TEMPERATURE T2 OF THE BOTTOMS FRACTION, UTILIZING A PORTION (B) OF SAID BOTTOMS FRACTION (C) FOR THE HEREINBEFORE DESCRIBED PRECOOLING OF THE VAPOROUS MIXTURE (A), RECOMPRESSING AT LEAST THE RESULTING THUS-HEATED VAPOR PORTION (E) OF BOTTOMS FRACTION (C) FROM SAID PRECOOLING UTILITY, TRANSFERRING HEAT THEREFROM TO AN EXTRANEOUS COOLING AGENT TO REDUCE THE TEMPERATURE OF COMPRESSED VAPOR PORTION (E) AND SEPARATING RESULTING CONDENSATE (G) FROM REMAINING VAPOR PORTION (H), AND USING THE VAPOR PORTION (H) TO SUPPLY HEAT TO THE FRACTIONATION OPERATION.
Claim 2
Dependent Claim
166 words
A PROCESS OF SEPARATING CONSTITUENTS OF A VAPOROUS MIXTURE (A) BY FRACTIONAL DISTILLATION COMPRISING THE STEPS OF PRECOOLING AND PARTIALLY CONDENSING THE VAPOROUS MIXTURE (A) BY HEAT EXCHANGE AGAINST AN EXPANSIONCOOLED PORTION (B) OF A LIQUID BOTTOMS FRACTION (C) PRODUCED IN THE PROCESS, AS DESCRIBED HEREINAFTER, SUBJECTING THE RESULTING PARTIALLY CONDENSED MIXTURE (D) TO FRACTIONAL DISTILLATION IN A FRACTIONATION OPERATION, SEPARATELY WITHDRAWING THEREFROM A VAPOR FRACTION (F) AND A LIQUID BOTTOMS FRACTION (C), THE TEMPERATURE T1 OF THE VAPOR FRACTION BEING LOWER THAN THE TEMPERATURE T2 OF THE BOTTOMS FRACTION, UTILIZING A PORTION (B) OF SAID BOTTOMS FRACTION (C) FOR THE HEREINBEFORE DESCRIBED PRECOOLING OF THE VAPOROUS MIXTURE (A), RECOMPRESSING AT LEAST THE RESULTING THUS-HEATED VAPOR PORTION (E) OF BOTTOMS FRACTION (C) FROM SAID PRECOOLING UTILITY, TRANSFERRING HEAT THEREFROM TO AN EXTRANEOUS COOLING AGENT TO REDUCE THE TEMPERATURE OF COMPRESSED VAPOR PORTION (E) AND SEPARATING RESULTING CONDENSATE (G) FROM REMAINING VAPOR PORTION (H), AND USING THE VAPOR PORTION (H) TO SUPPLY HEAT TO THE FRACTIONATION OPERATION.
References Cited (Backward Citations)
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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) | 1958-10-31 | 1959-05-02 | 1959-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-31 | 1963-05-02 | 1963-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-31 | 1967-05-02 | 1967-11-01 | $7700.00 | Window Closed / Lapsed |