US2685343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for deodorizing gases
Assignee: Shell Development Co
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Filing: 1951-05-11
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Granted: 1954-08-03
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Expires: 1971-05-11
Abstract
No abstract record available.
Inventors
- 👤 Permann Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:33
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; F; F23; F23G; F23G7/00; F23G7/06; F23G7/061; F23G7/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A CONTINUOUS METHOD OF DECONTAMINATING A SUBSTANTIALLY THERMALLY INERT CONTAMINATED GAS CONTAINING A MINOR PROPORTION OF NOXIOUS COMBUSTIBLE GASEOUS CONTAINMENT, WHICH METHOD COMPRISES: CONTINUOUSLY MOVING A BODY OF REFRACTORY PEBBLES SUCCESSIVELY DOWNWARDLY THROUGH A PEBBLE HEATING ZONE, IMMEDIATELY THEREAFTER THROUGH A CONTAMINATED GAS PREHEATING AND PEBBLE COOLING ZONE AND UPWARDLY THROUGH AN ELEVATING ZONE BACK TO THE TOP OF THE PEBBLE HEATING ZONE; AT THE SAME TIME COUNTERCURRENTLY CONTACTING THE PEBBLES AND THE CONTAMINATED GAS SUCCESSIVELY, AND WITHOUT ANY INTERVENING COOLING CONTACT OF THE PEBBLES WITH ANY OTHER FLUID STREAM, IN THE PEBBLE COOLING AND PEBBLE HEATING ZONES; AND SIMULTANEOUSLY COUNTERCURRENTLY CONTACTING THE PEBBLES IN THE PEBBLE HEATING ZONE WITH HOT COMBUSTION GASES HAVING A TEMPERATURE UPON INITIAL CONTACT WITH THE PEBBLES ABOVE THE IGNITION TEMPERATURE OF SAID CONTAMINANTS AS IN SAID CONTAMINATED GAS.
Claim 2
Dependent Claim
134 words
A CONTINUOUS METHOD OF DECONTAMINATING A SUBSTANTIALLY THERMALLY INERT CONTAMINATED GAS CONTAINING A MINOR PROPORTION OF NOXIOUS COMBUSTIBLE GASEOUS CONTAINMENT, WHICH METHOD COMPRISES: CONTINUOUSLY MOVING A BODY OF REFRACTORY PEBBLES SUCCESSIVELY DOWNWARDLY THROUGH A PEBBLE HEATING ZONE, IMMEDIATELY THEREAFTER THROUGH A CONTAMINATED GAS PREHEATING AND PEBBLE COOLING ZONE AND UPWARDLY THROUGH AN ELEVATING ZONE BACK TO THE TOP OF THE PEBBLE HEATING ZONE; AT THE SAME TIME COUNTERCURRENTLY CONTACTING THE PEBBLES AND THE CONTAMINATED GAS SUCCESSIVELY, AND WITHOUT ANY INTERVENING COOLING CONTACT OF THE PEBBLES WITH ANY OTHER FLUID STREAM, IN THE PEBBLE COOLING AND PEBBLE HEATING ZONES; AND SIMULTANEOUSLY COUNTERCURRENTLY CONTACTING THE PEBBLES IN THE PEBBLE HEATING ZONE WITH HOT COMBUSTION GASES HAVING A TEMPERATURE UPON INITIAL CONTACT WITH THE PEBBLES ABOVE THE IGNITION TEMPERATURE OF SAID CONTAMINANTS AS IN SAID CONTAMINATED GAS.
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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) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |