US3645882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbonation process for so2 removal
Assignee: Veolia WTS Systems USA Inc
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Filing: 1970-04-01
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Granted: 1972-02-29
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Expires: 1990-04-01
Abstract
Abstract THIS INVENTION IS DIRECTED TO INCREASING THE CURRENT EFFICIENCY OF THE CATION EXCHANGE MEMBRANE LOCATED NEXT TO THE CATHODE IN A THREE CHAMBER CELL FOR THE ELECTROLYTIC CONVERSION OF AN ALKALI METAL SULFATE FOR USE IN THE REMOVAL AND RECOVERY OF SULFUR DIOXIDE CONTAMINANTS FROM FLUE GASES. AFTER THE REMOVAL OF SAID SULFUR DIOXIDE CONTAMINANT FROM FLUE GAS, CARBON DIOXIDE IS INTRODUCED INTO THE CELL''S CATHOLYTE SOLUTION BY CONTACTING CATHOLYTE SOLUTION WITH AT LEAST A PORTION OF THE SAID TREATED FLUE GAS AT ANY POINT IN THE CATHOLYTE SYSTEM, PREFERABLY BY RECYCLING THE CATHOLYTE SOLUTION BETWEEN THE CELL''S CATHODE COMPARTMENT AND A CARBONATION TOWER.
Inventors
- 👤 Edgardo J Parsi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:56
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/501; C; C01; C01B; C01B17/00; C01B17/48; C01B17/50; C01B17/60
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |