Patent US3261766A successfully refreshed from Google Patents.
US3261766A
Expired / Lapsed
US
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Multistage evaporation with absorption of distilled vapors
Assignee: Fluor Corp
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Filing: 1964-12-11
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Granted: 1966-07-19
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Expires: 1984-12-11
Abstract
No abstract record available.
Inventors
- 👤 Thomas K Sherwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:32
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/06; B01D3/065; B01D1/00; B01D1/26; C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/16; Y; Y10; Y10S; Y10S159/00; Y10S159/08; Y10S159/33
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
IN THE EVAPORATION OF SALINE WATER BY PASSAGE THROUGH A SERIES OF EVAPORATOR ZONES IN EACH OF WHICH VAPOR IS GENERATED AND THE VAPOR IS CONDENSED BY INDIRECT HEAT EXCHANGE WITH THE SALINE WATER PASSING THROUGH THE ZONES, THE METHOD THAT INCLUDES: (A) CONTINUOUSLY CIRCULATING A HYGROSCOPIC ABSORPTION LIQUID THROUGH AN ABSORPTION ZONE AND A BOILING ZONE, (B) PASSING WATER VAPOR AT LOW SUBATMOSPHERIC PRESSURE FROM ONE OF SAID EVAPORATOR ZONES AMONG THE LATER STAGES INTO ABSORPTION ZONE AND THEREIN ABSORBING THE VAPOR IN SAID LIQUID, (C) PUMPING THE RESULTING LIQUID INTO SAID BOILING ZONE TO EFFECT SAID CIRCULATION AND HEATING THE LIQUID THEREIN BY INDIRECT HEAT EXCHANGE WITH STEAM TO VAPORIZING THE ABSORBED WATER, (D) PASSING A SALINE WATER STREAM IN INDIRECT HEAT EXCHANGE WITH THE ABSORPTION ZONES; AND THROUGH SAID EVAPORATOR ZONES; AND (E) PASSING WATER VAPOR FROM SAID BOILING ZONE INTO ONE OF SAID EVAPORATOR ZONES AMONG THE EARLY STAGES THEREOF TO CONDENSE THE VAPOR THEREIN.
Claim 2
Dependent Claim
159 words
IN THE EVAPORATION OF SALINE WATER BY PASSAGE THROUGH A SERIES OF EVAPORATOR ZONES IN EACH OF WHICH VAPOR IS GENERATED AND THE VAPOR IS CONDENSED BY INDIRECT HEAT EXCHANGE WITH THE SALINE WATER PASSING THROUGH THE ZONES, THE METHOD THAT INCLUDES: (A) CONTINUOUSLY CIRCULATING A HYGROSCOPIC ABSORPTION LIQUID THROUGH AN ABSORPTION ZONE AND A BOILING ZONE, (B) PASSING WATER VAPOR AT LOW SUBATMOSPHERIC PRESSURE FROM ONE OF SAID EVAPORATOR ZONES AMONG THE LATER STAGES INTO ABSORPTION ZONE AND THEREIN ABSORBING THE VAPOR IN SAID LIQUID, (C) PUMPING THE RESULTING LIQUID INTO SAID BOILING ZONE TO EFFECT SAID CIRCULATION AND HEATING THE LIQUID THEREIN BY INDIRECT HEAT EXCHANGE WITH STEAM TO VAPORIZING THE ABSORBED WATER, (D) PASSING A SALINE WATER STREAM IN INDIRECT HEAT EXCHANGE WITH THE ABSORPTION ZONES; AND THROUGH SAID EVAPORATOR ZONES; AND (E) PASSING WATER VAPOR FROM SAID BOILING ZONE INTO ONE OF SAID EVAPORATOR ZONES AMONG THE EARLY STAGES THEREOF TO CONDENSE THE VAPOR THEREIN.
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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |