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US3188293A
Expired / Lapsed
US
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Process for regenerating molecular sieves
Assignee: Gulf Research and Development Co
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Filing: 1962-03-21
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Granted: 1965-06-08
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Expires: 1982-03-21
Abstract
No abstract record available.
Inventors
- 👤 Kenneth H Bacon
- 👤 Norman L Carr
- 👤 Alfred M Henke
- 👤 Harry C Stauffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:17
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/30; B01J20/34; B01J20/3408; C; C10; C10G; C10G25/00; C10G25/02; C10G25/03; C10G25/05; Y; Y10; Y10S; Y10S502/00; Y10S502/515; Y10S502/517
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A PROCESS FOR REGENERATING MOLECULAR SIEVES USED IN AN ADSORPTON ZONE FOR THE REMOVAL OF SULFUR WHICH COMPRISES: (1) PASSING AN INERT GAS THROUGH THE ADSORPTION ZONE AT A TEMPERATURE FROM ABOUT 0* TO 100*F. AND A PRESSURE OF 50 TO 500 P.S.I.G., AND RECOVERING AN EFFLUENT OF LOW SULFUR CONTENT; (2) REDUCING THE PRESSURE IN THE ADSORPTION ZONE TO ABOUT ONE ATMOSPHERE WHILE MAINTAINING THE TEMPERATURE THEREIN AT FROM 0* TO 100*F. TO RECOVER A HIGH SULFUR CONTENT EFFLUENT; (3) PASSING AN INERT GAS THROUGH THE ADSORPTION ZONE AT A TEMPERATURE OF 0* TO 100*F. AND A PRESSURE NOT ABOVE ABOUT 50 P.S.I.G. TO RECOVER A LOW SULFUR CONTENT EFFLUENT; AND THEN (4) PASSING AN INERT GAS THROUGH SAID ADSORPTION ZONE AT A TEMPERATURE OF FROM ABOUT 400* TO 850*F. AND A PRESSURE OF ABOUT ONE ATMOSPHERE TO RECOVER A SULFUR-RICH EFFLUENT.
Claim 2
Dependent Claim
143 words
A PROCESS FOR REGENERATING MOLECULAR SIEVES USED IN AN ADSORPTON ZONE FOR THE REMOVAL OF SULFUR WHICH COMPRISES: (1) PASSING AN INERT GAS THROUGH THE ADSORPTION ZONE AT A TEMPERATURE FROM ABOUT 0* TO 100*F. AND A PRESSURE OF 50 TO 500 P.S.I.G., AND RECOVERING AN EFFLUENT OF LOW SULFUR CONTENT; (2) REDUCING THE PRESSURE IN THE ADSORPTION ZONE TO ABOUT ONE ATMOSPHERE WHILE MAINTAINING THE TEMPERATURE THEREIN AT FROM 0* TO 100*F. TO RECOVER A HIGH SULFUR CONTENT EFFLUENT; (3) PASSING AN INERT GAS THROUGH THE ADSORPTION ZONE AT A TEMPERATURE OF 0* TO 100*F. AND A PRESSURE NOT ABOVE ABOUT 50 P.S.I.G. TO RECOVER A LOW SULFUR CONTENT EFFLUENT; AND THEN (4) PASSING AN INERT GAS THROUGH SAID ADSORPTION ZONE AT A TEMPERATURE OF FROM ABOUT 400* TO 850*F. AND A PRESSURE OF ABOUT ONE ATMOSPHERE TO RECOVER A SULFUR-RICH EFFLUENT.
References Cited (Backward Citations)
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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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |