Patent US3739548A successfully refreshed from Google Patents.
US3739548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for removing distillate from physical solvents
Assignee: Fish Eng & Construction Inc
•
Filing: 1972-01-28
•
Granted: 1973-06-19
•
Expires: 1992-01-28
Abstract
Abstract Water is mixed with a stream of physical solvent used for acid gas removal which contains distillate. The mixture separates into an aqueous phase containing the physical solvent and water and an organic phase containing the distillate. The two phases are separated mechanically and the water and solvent are separated by fractional distillation.
Inventors
- 👤 A Hegwer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:58
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/52; B01D53/526
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
20 words
The process as claimed in claim 1, including the additional step of: returning said solvent to contact said gas stream.
Claim 2
Dependent Claim
34 words
The process as claimed in claim 1 wherein said separating steps together include: decanting said organic phase from said aqueous phase; and, fractionally distilling said aqueous phase to separate said solvent from said water.
Claim 3
Dependent Claim
36 words
The process as claimed in claim 1 wherein said adding step includes: adding water to about 0.1 to about 10 percent by volume of the total amount of said physical solvent passing from said contacting step.
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |