US3778501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regeneration of flue gas desulfurization sorbents
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1971-06-04
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Granted: 1973-12-11
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Expires: 1991-06-04
Abstract
Abstract SOLID SORBENTS FOR THE REMOVAL OF SULFUR DIOXIDE FROM GASES, SUCH AS COPPER OXIDE ON A SUITABLE CARRIER MATERIAL SUCH AS ALUMINA, ARE REGENERATED WITH A REGENERATION GAS COMPRISING HYDROGEN AND ABOUT 50 TO 95% BY VOLUME OF STEAM. THE PRESENCE OF STEAM IN THE AMOUNTS INDICATED REDUCES THE AMOUNT OF SULFIDE FORMATION AND THEREBY INCREASES THE CAPACITY OF THE SORBENT AND IMPROVES THE UTILIZATION OF REDUCING GAS.
Inventors
- 👤 R Lang
- 👤 E Holt
- 👤 D Stoneback
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:12
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/508
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) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |