Patent US2864671A successfully refreshed from Google Patents.
US2864671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of hydrogen recovery
Assignee: Standard Oil Co
•
Filing: 1954-06-30
•
Granted: 1958-12-16
•
Expires: 1974-06-30
Abstract
No abstract record available.
Inventors
- 👤 Mohlman John William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:05
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/50; C01B3/508
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
IN PROCESSES FOR THERMAL CONVERSION OF HYDROCARBON CHARGE STOCKS, THE METHOD OF QUENCHING THE HOT CONVERSION PRODUCT STREAM AND RECOVERING SUBSTANTIALLY PURE HYDROGEN THEREFROM WHICH COMPRISES: RAPIDLY COOLING SAID HOT CONVERSION PRODUCT STREAM IN AN ABSORPTION ZONE BY DIRECTLY CONTACTING SAID HOT CONVERSION PRODUCT STREAM WITH A COOL LIQUID CONTACT MEDIUM COMPRISING AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS CAPABLE OF FORMING AN EQUILIBRIUM METAL HYDRIDE WITH HYDROGEN AT ELEVATED TEMPERATURE; ABSORBING HYDROGEN FROM THE COOLED CONVERSION PRODUCT STREAM IN THE LIQUID CONTACTING MEDIUM TO FORM A FLUID MIXTURE OF METAL HYDRIDE AND LIQUID CONTACTING MEDIUM WHILE MAINTAINING A TEMPERATURE LESS THAN THE DECOMPOSITION TEMPERATURE OF THE METAL HYDRIDE AT THE PREVAILING HYDROGEN PARTIAL PRESSURE; SEPARATING THE UNABSORBED PORTION OF THE CONVERSION PRODUCT STREAM; WITHDRAWING THE FLUID MIXTURE FROM THE ABSORPTION ZONE; RECOVERING SUBSTANTIALLY PURE HYDROGEN FROM THE FLUID MIXTURE IN A DECOMPOSITION ZONE BY ADJUSTING THE TEMPERATURE-PRESSURE RELATIONSHIP THEREIN TO PROVIDE A TEMPERTURE GREATER THAN
Claim 2
Dependent Claim
164 words
IN PROCESSES FOR THERMAL CONVERSION OF HYDROCARBON CHARGE STOCKS, THE METHOD OF QUENCHING THE HOT CONVERSION PRODUCT STREAM AND RECOVERING SUBSTANTIALLY PURE HYDROGEN THEREFROM WHICH COMPRISES: RAPIDLY COOLING SAID HOT CONVERSION PRODUCT STREAM IN AN ABSORPTION ZONE BY DIRECTLY CONTACTING SAID HOT CONVERSION PRODUCT STREAM WITH A COOL LIQUID CONTACT MEDIUM COMPRISING AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS CAPABLE OF FORMING AN EQUILIBRIUM METAL HYDRIDE WITH HYDROGEN AT ELEVATED TEMPERATURE; ABSORBING HYDROGEN FROM THE COOLED CONVERSION PRODUCT STREAM IN THE LIQUID CONTACTING MEDIUM TO FORM A FLUID MIXTURE OF METAL HYDRIDE AND LIQUID CONTACTING MEDIUM WHILE MAINTAINING A TEMPERATURE LESS THAN THE DECOMPOSITION TEMPERATURE OF THE METAL HYDRIDE AT THE PREVAILING HYDROGEN PARTIAL PRESSURE; SEPARATING THE UNABSORBED PORTION OF THE CONVERSION PRODUCT STREAM; WITHDRAWING THE FLUID MIXTURE FROM THE ABSORPTION ZONE; RECOVERING SUBSTANTIALLY PURE HYDROGEN FROM THE FLUID MIXTURE IN A DECOMPOSITION ZONE BY ADJUSTING THE TEMPERATURE-PRESSURE RELATIONSHIP THEREIN TO PROVIDE A TEMPERTURE GREATER THAN
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) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |