Patent US2615787A successfully refreshed from Google Patents.
US2615787A
Expired / Lapsed
US
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Purification and separation of gaseous mixtures
Assignee: Shell Development Co
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Filing: 1949-08-27
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Granted: 1952-10-28
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Expires: 1969-08-27
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Randlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:31
CPC Classifications
C; C10; C10K; C10K3/00; C10K1/00; C10K1/08; C10K1/10; C10K1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
IN THE PROCESS OF PURIFYING A WATER-IMMISCIBLE FLUID OF H2S AND ANALOGOUS ACIDIC IMPURTIES WHEREIN A PORTION OF THE FLUID CONTAINING H2S AND ANALOGOUS IMPURITIES IS SCRUBBED WITH AN AQUEOUS SOLUTION OF AN ALKALINE ABSORBENT FOR THE ACIDIC IMPURITIES AND CAPABLE OF ACTIVATION BY CONTACT WITH A STRIPPING MEDIUM, TO PRODUCE A FAT SOLUTION CONTAINING SAID IMPURITIES, THE FAT SOLUTION IS REGENERATED FOR REUSE AS A SCRUBBING SOLUTION BY CONTACTING IT WITH A STRIPPING MEDIUM IN AN UPRIGHT REGENERATION ZONE UNDER CONDITIONS TO STRIP THE ACIDIC IMPURITIES FROM THE SOLUTION AND TO REMOVE WITH SAID IMPURITIES A PORTION OF THE SOLUTION-WATER AS VAPOR, WHEREBY A LEAN ABSORBENT SOLUTION OF INCREASED ALKALINE CONCENTRATION IS PRODUCED IN THE DIRECTION OF FLOW OF THE SOLUTION IN THE REGENERATION ZONE AND A VAPOROUS STREAM COMPRISING IMPURITIES AND A PORTION OF THE SOLUTION-WATER IS WITHDRAWN FROM THE REGENERATION ZONE, THE WITHDRAWN VAPOROUS STREAM IS PARTIALLY CONDENSED TO YIELD A LIQUID AQUEOUS PHASE CONDENSATE, THE STRIPPED LEAN ABSORBENT SOLUTION OF INCREASED ALKALINE CONCENTRATION IS ADMIXED WITH AT LEAST A PORTION OF THE CONDENSATE PRODUCED BY THE PARTIAL CONDENSATION OF SAID WITHDRAWN VA-
Claim 2
Dependent Claim
186 words
IN THE PROCESS OF PURIFYING A WATER-IMMISCIBLE FLUID OF H2S AND ANALOGOUS ACIDIC IMPURTIES WHEREIN A PORTION OF THE FLUID CONTAINING H2S AND ANALOGOUS IMPURITIES IS SCRUBBED WITH AN AQUEOUS SOLUTION OF AN ALKALINE ABSORBENT FOR THE ACIDIC IMPURITIES AND CAPABLE OF ACTIVATION BY CONTACT WITH A STRIPPING MEDIUM, TO PRODUCE A FAT SOLUTION CONTAINING SAID IMPURITIES, THE FAT SOLUTION IS REGENERATED FOR REUSE AS A SCRUBBING SOLUTION BY CONTACTING IT WITH A STRIPPING MEDIUM IN AN UPRIGHT REGENERATION ZONE UNDER CONDITIONS TO STRIP THE ACIDIC IMPURITIES FROM THE SOLUTION AND TO REMOVE WITH SAID IMPURITIES A PORTION OF THE SOLUTION-WATER AS VAPOR, WHEREBY A LEAN ABSORBENT SOLUTION OF INCREASED ALKALINE CONCENTRATION IS PRODUCED IN THE DIRECTION OF FLOW OF THE SOLUTION IN THE REGENERATION ZONE AND A VAPOROUS STREAM COMPRISING IMPURITIES AND A PORTION OF THE SOLUTION-WATER IS WITHDRAWN FROM THE REGENERATION ZONE, THE WITHDRAWN VAPOROUS STREAM IS PARTIALLY CONDENSED TO YIELD A LIQUID AQUEOUS PHASE CONDENSATE, THE STRIPPED LEAN ABSORBENT SOLUTION OF INCREASED ALKALINE CONCENTRATION IS ADMIXED WITH AT LEAST A PORTION OF THE CONDENSATE PRODUCED BY THE PARTIAL CONDENSATION OF SAID WITHDRAWN VA-
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) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |