US3714040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of regenerating carbon beds
Assignee: Stauffer Chemical Co
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Filing: 1970-10-16
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Granted: 1973-01-30
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Expires: 1990-10-16
Abstract
Abstract A process for regenerating activated carbon beds saturated with chlorine is described herein. The process involves injecting sulfur dioxide into the beds. The sulfur dioxide is oxidized by the chlorine to sulfuric acid. The injection of sulfur dioxide is continued until the effluent contains the same amount as the input.
Inventors
- 👤 R Jordan
- 👤 N Wilson
- 👤 T Goldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:24
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/01; C01B32/00; C01B32/30; C01B32/354; C01B32/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A process for regenerating activated carbon beds that have been saturated with adsorbed elemental chlorine comprising the steps of injecting sulfur dioxide into the chlorine saturated bed, reacting the sulfur dioxide with the elemental chlorine to form sulfuric acid and hydrochloric acid, continuing the injection of sulfur dioxide into the carbon beds until such time as the same amount of sulfur dioxide is in the effluent from the bed as was fed thereto which substantially removes the elemental chlorine from the carbon beds, thereafter purging the sulfuric acid formed within the bed.
Claim 2
Dependent Claim
92 words
A process for regenerating activated carbon beds that have been saturated with adsorbed elemental chlorine comprising the steps of injecting sulfur dioxide into the chlorine saturated bed, reacting the sulfur dioxide with the elemental chlorine to form sulfuric acid and hydrochloric acid, continuing the injection of sulfur dioxide into the carbon beds until such time as the same amount of sulfur dioxide is in the effluent from the bed as was fed thereto which substantially removes the elemental chlorine from the carbon beds, thereafter purging the sulfuric acid formed within the bed.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |