US3217466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of ethylene oxide
Assignee: Lummus Technology LLC
•
Filing: 1962-05-22
•
Granted: 1965-11-16
•
Expires: 1982-05-22
Abstract
No abstract record available.
Inventors
- 👤 Marcel J P Bogart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:17
CPC Classifications
C; C07; C07D; C07D301/00; C07D301/32; B; B01; B01D; B01D3/00; B01D3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A METHOD FOR SEPARATING ETHYLENE OXIDE FROM A GASEOUS MIXTURE CONTAINING THE SAME WHICH COMPRISES: (A) INTRODUCING SAID MIXTURE INTO AN ABSORPTION ZONE; (B) PASSING THE MIXTURE THROUGH SAID ZONE IN COUNTERCURRENT CONTACT WITH AN AQUEOUS ABSORBENT AND ABSORBING SAID ETHYLENE OCIDE IN SAID ABSORBENT; (C) WITHDRAWING SAID ENRICHED ABOSROBENT FROM SAID ABSORPTION ZONE; (D) INTRODUCING SAID ENRICHED ABSORBENT INTO A STRIPPING ZONE; (E) INTRODUCING A STRIPPING MEDIUM INTO SAID STRIPPING ZONE AND STRIPPING SAID ETHYLENE OXIDE FROM SAID ABSORBENT BY CONTACTING THE ENRICHED ABSORBENT WITH SAID STRIPPING MEDIUM; (F) WITHDRAWING SAID ETHYLENE OXIDE FROM SAID STRIPPING ZONE; (G) WITHDRAWING A LEAN ABSORBENT FROM SAID STRIPPING ZONE; (H) PASSING SAID LEAN ABSORBENT TO A COLLECTION ZONE; (I) COOLING THE LEAN ABSORBENT IN SAID COLLECTION ZONE BY VAPORIZING A PORTION OF SAID ABSORBENT BY REDUCING THE PRESSURE IN SAID COLLECTION ZONE BY A JET EJECTOR MOTIVATED BY A GAS; (J) INTRODUCING INTO SAID STRIPPING ZONE AS SAID STRIPPING MEDIUM THE GAS USED TO MOTIVATE SAID JET EJECTOR AND SAID PORTION OF VAPORIZED ABSORBENT; AND (K) PASSING SAID COOLED ABSORBENT FROM SAID COLLECTION ZONE TO SAID ABSORPTION ZONE.
Claim 2
Independent Claim
186 words
A METHOD FOR SEPARATING ETHYLENE OXIDE FROM A GASEOUS MIXTURE CONTAINING THE SAME WHICH COMPRISES: (A) INTRODUCING SAID MIXTURE INTO AN ABSORPTION ZONE; (B) PASSING THE MIXTURE THROUGH SAID ZONE IN COUNTERCURRENT CONTACT WITH AN AQUEOUS ABSORBENT AND ABSORBING SAID ETHYLENE OCIDE IN SAID ABSORBENT; (C) WITHDRAWING SAID ENRICHED ABOSROBENT FROM SAID ABSORPTION ZONE; (D) INTRODUCING SAID ENRICHED ABSORBENT INTO A STRIPPING ZONE; (E) INTRODUCING A STRIPPING MEDIUM INTO SAID STRIPPING ZONE AND STRIPPING SAID ETHYLENE OXIDE FROM SAID ABSORBENT BY CONTACTING THE ENRICHED ABSORBENT WITH SAID STRIPPING MEDIUM; (F) WITHDRAWING SAID ETHYLENE OXIDE FROM SAID STRIPPING ZONE; (G) WITHDRAWING A LEAN ABSORBENT FROM SAID STRIPPING ZONE; (H) PASSING SAID LEAN ABSORBENT TO A COLLECTION ZONE; (I) COOLING THE LEAN ABSORBENT IN SAID COLLECTION ZONE BY VAPORIZING A PORTION OF SAID ABSORBENT BY REDUCING THE PRESSURE IN SAID COLLECTION ZONE BY A JET EJECTOR MOTIVATED BY A GAS; (J) INTRODUCING INTO SAID STRIPPING ZONE AS SAID STRIPPING MEDIUM THE GAS USED TO MOTIVATE SAID JET EJECTOR AND SAID PORTION OF VAPORIZED ABSORBENT; AND (K) PASSING SAID COOLED ABSORBENT FROM SAID COLLECTION ZONE TO SAID ABSORPTION ZONE.
References Cited (Backward Citations)
GB533054A
Cited
CA606016A
Cited
US2295462A
Cited
US2447834A
Cited
US2470657A
Cited
US2649166A
Cited
US2762453A
Cited
US2756241A
Cited
US2775600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |