US3567591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for open multicondensation of vapors from multiflash evaporations
Assignee: Individual
•
Filing: 1969-03-03
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Granted: 1971-03-02
•
Expires: 1989-03-03
Abstract
Abstract CO-ACTING CENTRIFUGAL PUMP, THE SECOND SPRAY PASSING THROUGH THE OPEN VAPOR SPACE OF THE NEXT HIGHER PRESSURE FLASH EVAPORATION STAGE. MULTIFLASH EVAPORATION FOR CONCENTRATING SOLUTIONS, AND PRODUCING FRESH WATER WHEREIN VAPORS FROM A FLASH EVAPORATOR AT A LOWER PRESSURE IS CONDENSED AND ENTRAINED IN A COLDER STREAM OF LIQUID SRPAYED THROUGH THE OPEN VAPOR SPACE BETWEEN TWO CENTRIFUGAL PUMPS, THE SPRAY OF CONDENSING LIQUID AND ENTRAINED VAPORS BEING DIRECTED INTO THE SUCTION EYE OF A FIRST CENTRIFUGAL PUMP THEREBY COMPRESSING THE ENTRAINED VAPORS. THE RESULTANT CONDENSING LIQUID AND COMPRESSED VAPORS ARE THEN DISCHARGED AS A SECOND SPRAY INTO THE SUCTION EYE OF A SECOND
Inventors
- 👤 Donald F Othmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:53
CPC Classifications
F; F04; F04D; F04D31/00; Y; Y10; Y10S; Y10S159/00; Y10S159/17; Y10S159/33; Y10S159/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |