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US3661762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic cell for removal and recovery of so2 from waste gases
Assignee: Veolia WTS Systems USA Inc
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Filing: 1970-05-04
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Granted: 1972-05-09
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Expires: 1990-05-04
Abstract
Abstract THIS INVENTION RELATES TO A FOUR COMPARTMENT ELECTROLYTIC CELL FOR CONVERTING A SALT SOLUTION FEED INTO ITS CORRESPONDING ACID, ACID SALT AND CAUSTIC SOLUTION FOR USE IN CONNECTION WITH A LIQUID SO2 ABSORPTION SYSTEM. THE CAUSTIC PRODUCED ABSORBS THE SO2 GAS AND ON EXHAUSTION IS NEUTRALIZED WITH THE ACID SALT TO REFORM THE ORIGINAL SALT FEED SOLUTION. THE DESORBED SO2 GAS IS COLLECTED AND THE SALT SOLUTION RECYCLED AS FEED TO THE CELL. THE ACID PRO- DUCED IN THE ANODE COMPARTMENT OF THE CELL IS REMOVED FROM THE SCRUBBER IN AN AMOUNT WHICH IS SUFFICIENT TO MAINTAIN THE REFORMED SALT FEED SOLUTION SUBSTANTIALLY NEUTRAL IN PH.
Inventors
- 👤 Edgardo J Parsi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:21
CPC Classifications
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |