US3300280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst composition and process for the recovery of sulfur compounds from gas mixtures
Assignee: Societe Nationale des Petroles dAquitaine SA
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Filing: 1964-02-06
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Granted: 1967-01-24
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Expires: 1984-02-06
Abstract
No abstract record available.
Inventors
- 👤 Terminet Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:22
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/69; C01B17/74; C01B17/76; B; B01; B01J; B01J23/00; B01J23/16; B01J23/20; B01J23/22; C01B17/78; C01B17/79
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS OF TREATING COMBUSTION GASES FOR THE RECOVERY OF GASEOUS SULFUR COMPOUNDS THEREFROM, COMPRISING THE STEPS OF PASSING THE GASES OVER A CATALYST CONSISTING ESSENTIALLY OF ALUMINA, VANADIUM PENTOXIDE AND POTASSIUM OXIDE AT A TEMPERATURE RANGING FROM ROOM TEMPERATURE TO ABOUT 150*C. TO ADSORB SULFUR CONSTITUENTS IN SAID GASES ON SAID ALUMINA, PASSING AN OXYGEN-CONTAINING GAS OVER THE CATALYST TO DESORB AND OXIDIZE SAID CONSTITUENTS TO SULFUR DIOXIDE, AND THEN ELEVATING THE TEMPERATURE TO A TEMPERATURE SUFFICIENT TO OXIDIZE THE DIOXIDE TO SULFUR TRIOXIDE IN THE PRESENCE OF THE SAID CATALYST.
Claim 2
Dependent Claim
92 words
A PROCESS OF TREATING COMBUSTION GASES FOR THE RECOVERY OF GASEOUS SULFUR COMPOUNDS THEREFROM, COMPRISING THE STEPS OF PASSING THE GASES OVER A CATALYST CONSISTING ESSENTIALLY OF ALUMINA, VANADIUM PENTOXIDE AND POTASSIUM OXIDE AT A TEMPERATURE RANGING FROM ROOM TEMPERATURE TO ABOUT 150*C. TO ADSORB SULFUR CONSTITUENTS IN SAID GASES ON SAID ALUMINA, PASSING AN OXYGEN-CONTAINING GAS OVER THE CATALYST TO DESORB AND OXIDIZE SAID CONSTITUENTS TO SULFUR DIOXIDE, AND THEN ELEVATING THE TEMPERATURE TO A TEMPERATURE SUFFICIENT TO OXIDIZE THE DIOXIDE TO SULFUR TRIOXIDE IN THE PRESENCE OF THE SAID CATALYST.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |