Method and apparatus for distilling freshwater from seawater
Abstract
Abstract A CONTINUOUS FLOW OF WARM SEAWATER-FOR INSTANCE, WATER FROM THE SURFACE-IS FED UPWARDS FROM A SUPPLY OF THE WARM WATER THROUGH A COLUMN TO DEGASSERS POSITIONED AT DIFFERENT LEVELS. THE WARM WATER IS FED FROM THE LOWEST TO THE HIGHEST DEGASSER, IN WHICH GRADUALLY DECREASING PARTIAL PRESSURES, THAT ARE HIGHER THAN THE PARTIAL PRESSURES OF THE WARM WATER ARE ESTABLISHED. THE NON-CONDENSABLE GASSES RELEASED IN THE DEGASSERS ARE REMOVED AND THE WARM WATER IS RAISED FURTHER THROUGH THE COLUMN TO EVAPORATORS THROUGH WHICH THE WARM WATER IS PASSED IN TURN. IN THE EVAPORATORS, GRADUALLY DECREASING PRESSURES CORRESPONDING TO THE GRADUALY DECREASING PARTIAL PRESSURE OF THE WATER VAPOR IN THEM ARE MAINTAINED. THE WASTE WATER FROM THE LEAST EVAPORATOR IS RETURNED TO THE SEA DOWNWARDS THROUGH ANOTHER COLUMN AND THE VAPORS FROM EACH EVAPORATOR ARE CONDUCTED SEPARATELY TO A CORRESPONDING CONDENSER OPERATED BY INDIRECT HEAT EXCHANGE, USING A CONTINUOUS STREAM OF COLD SEAWATER OBTAINED FROM THE SEA. RESIDUAL NON-CONDENSABLE GASES RELEASED ON THE VAPORIZATION F THE WARM WATER ARE REMOVED FROM THE CONDENSERS AND THE FRESHWATER IS COLLECTED FROM THE CONDENSERS.
Inventors
- 👤 E Koivisto
- 👤 R Saari
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |