US2690989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preventing hydrogen sulfide hydrate formation
Assignee: Phillips Petroleum Co
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Filing: 1951-10-01
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Granted: 1954-10-05
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Expires: 1971-10-01
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C Bottenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:51
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/04; C07C7/005; Y; Y10; Y10S; Y10S203/00; Y10S203/19; Y10S585/00; Y10S585/949; Y10S585/952
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
IN A FRACTIONATION PROCESS FOR THE REMOVAL OF ETHANE AND LOWER BOILING HYDROCARBONS FROM A HYDROCARBON MIXTURE CONTAINING THESE, HIGHER BOILING HYDROCARBONS, HYDROGEN SULFIDE AND MOISTURE, THE STEP COMPRISING INTRODUCING SAID HYDROCARBON MIXTURE INTO A DEETHANIZING ZONE AT SUCH A POINT AS TO PROVIDE A STRIPPING ZONE AT AND A FRACTIONATION ZONE ABOVE THE POINT OF FEED INTRODUCTION, SUBJECTING SAID MIXTURE TO FRACTIONATION CONDITIONS, REMOVING FROM THIS OPERATION AN OVERHEAD PRODUCT COMPRISING ETHANE AND SAID LOWER BOILING HYDROCARBONS AND A BOTTOMS PRODUCT COMPRISING PROPANE AND SAID HIGHER BOILING HYDROCARBONS, WITHDRAWING AT LEAST A PORTION OF THE PARTIALLY FRACTIONATED MATERIAL FROM SAID FRACTIONATION ZONE, TREATING THE WITHDRAWN MATERIAL FOR REMOVAL OF HYDROGEN SULFIDE, REINTRODUCING THIS TREATED MATERIAL INTO SAID FRACTIONATION ZONE AT A POINT ABOVE ITS POINT OF WITHDRAWAL AND RECOVERING FROM SAID OVERHEAD PRODUCT A FURTHER PRODUCT FREE FROM HYDROGEN SULFIDE WHEREBY HYDROGEN SULFIDE-HYDRATE FORMATION IN THAT PORTION OF SAID FRACTIONATION ZONE ABOVE THE POINT OF WITHDRAWAL OF SAID PORTION OF PARTIALLY FRACTIONATED MATERIAL IS PREVENTED.
Claim 2
Dependent Claim
166 words
IN A FRACTIONATION PROCESS FOR THE REMOVAL OF ETHANE AND LOWER BOILING HYDROCARBONS FROM A HYDROCARBON MIXTURE CONTAINING THESE, HIGHER BOILING HYDROCARBONS, HYDROGEN SULFIDE AND MOISTURE, THE STEP COMPRISING INTRODUCING SAID HYDROCARBON MIXTURE INTO A DEETHANIZING ZONE AT SUCH A POINT AS TO PROVIDE A STRIPPING ZONE AT AND A FRACTIONATION ZONE ABOVE THE POINT OF FEED INTRODUCTION, SUBJECTING SAID MIXTURE TO FRACTIONATION CONDITIONS, REMOVING FROM THIS OPERATION AN OVERHEAD PRODUCT COMPRISING ETHANE AND SAID LOWER BOILING HYDROCARBONS AND A BOTTOMS PRODUCT COMPRISING PROPANE AND SAID HIGHER BOILING HYDROCARBONS, WITHDRAWING AT LEAST A PORTION OF THE PARTIALLY FRACTIONATED MATERIAL FROM SAID FRACTIONATION ZONE, TREATING THE WITHDRAWN MATERIAL FOR REMOVAL OF HYDROGEN SULFIDE, REINTRODUCING THIS TREATED MATERIAL INTO SAID FRACTIONATION ZONE AT A POINT ABOVE ITS POINT OF WITHDRAWAL AND RECOVERING FROM SAID OVERHEAD PRODUCT A FURTHER PRODUCT FREE FROM HYDROGEN SULFIDE WHEREBY HYDROGEN SULFIDE-HYDRATE FORMATION IN THAT PORTION OF SAID FRACTIONATION ZONE ABOVE THE POINT OF WITHDRAWAL OF SAID PORTION OF PARTIALLY FRACTIONATED MATERIAL IS PREVENTED.
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) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |