Patent US2820833A successfully refreshed from Google Patents.
US2820833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydration of natural gas streams and cold separation units therefor
Assignee: Individual
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Filing: 1955-01-27
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Granted: 1958-01-21
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Expires: 1975-01-27
Abstract
No abstract record available.
Inventors
- 👤 Samuel A Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:23
CPC Classifications
B; B01; B01D; B01D5/00; B01D5/0078; B01D5/0081; B01D5/0003; B01D5/0006; B01D5/0033; B01D5/0036; C; C07; C07C; C07C7/00; C07C7/005; Y; Y10; Y10S; Y10S62/00; Y10S62/902; Y10S62/905
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
178 words
A METHOD OF DEHYDRATING A NATURAL GAS STREAM HAVING IMPURITIES THEREIN, CONSISTING OF PASSING THE STREAM THROUGH A HEAT EXCHANGE COIL SURROUNDED BY A LIQUID BATH TO TRANSFER HEAT TO THE BATH AND COOL THE STREAM, MAINTAINING THE LIQUID BATH WITHIN A SECOND STAGE VESSEL, DISCHARGING THE COOLED STREAM INTO A FIRST STAGE VESSEL REMOTE FROM THE LIQUID BATH, REMOVING THE IMPURTIES FROM THE GAS STREAM FOR PRECIPITATION AND ACCUMULATION WITHIN THE FIRST STAGE VESSEL, DIRECTING THE REMOVED IMPURITIES INTO THE LOWER PORTION OF THE SECOND STAGE VESSEL, MAINTAINING THE REMOVED IMPURITIES OUT OF CONTACT WITH THER LIQUID BATH, WITHDRAWING THE REMAINING VAPOR COMPONENTS OF THE GAS STREAM FROM THE FIRST STAGE VESSEL, REDUCING THE PRESSURE AND FURTHER COOLING THE VAPOR COMPONENTS OF THE GAS STREAM TO SUBSTANTIALLY HYDRATE FORMING CONDITION, DISCHARGING THE FURTHER COOLED GAS STREAM INTO THE UPPER PORTION OF THE SECOND STAGE VESSEL, PRECIPITATING THE HYDRATES INTO THE LIQUID BATH FOR MELTING THE HYDRATES, SUBSTANTIALLY PRECLUDING LOSS OF THE LIQUID BATH, AND WITHDRAWING THE DEHYDRATE GAS FROM THE UPPER PORTION OF THE SECOND STAGE VESSEL.
Claim 2
Independent Claim
178 words
A METHOD OF DEHYDRATING A NATURAL GAS STREAM HAVING IMPURITIES THEREIN, CONSISTING OF PASSING THE STREAM THROUGH A HEAT EXCHANGE COIL SURROUNDED BY A LIQUID BATH TO TRANSFER HEAT TO THE BATH AND COOL THE STREAM, MAINTAINING THE LIQUID BATH WITHIN A SECOND STAGE VESSEL, DISCHARGING THE COOLED STREAM INTO A FIRST STAGE VESSEL REMOTE FROM THE LIQUID BATH, REMOVING THE IMPURTIES FROM THE GAS STREAM FOR PRECIPITATION AND ACCUMULATION WITHIN THE FIRST STAGE VESSEL, DIRECTING THE REMOVED IMPURITIES INTO THE LOWER PORTION OF THE SECOND STAGE VESSEL, MAINTAINING THE REMOVED IMPURITIES OUT OF CONTACT WITH THER LIQUID BATH, WITHDRAWING THE REMAINING VAPOR COMPONENTS OF THE GAS STREAM FROM THE FIRST STAGE VESSEL, REDUCING THE PRESSURE AND FURTHER COOLING THE VAPOR COMPONENTS OF THE GAS STREAM TO SUBSTANTIALLY HYDRATE FORMING CONDITION, DISCHARGING THE FURTHER COOLED GAS STREAM INTO THE UPPER PORTION OF THE SECOND STAGE VESSEL, PRECIPITATING THE HYDRATES INTO THE LIQUID BATH FOR MELTING THE HYDRATES, SUBSTANTIALLY PRECLUDING LOSS OF THE LIQUID BATH, AND WITHDRAWING THE DEHYDRATE GAS FROM THE UPPER PORTION OF THE SECOND STAGE VESSEL.
Claim 3
Dependent Claim
162 words
IN A COLD SEPARATION UNIT FOR DEHYDRATING A NATURAL GAS STREAM COMPRISING A FRIST STAGE TANK AND A SECOND STAGE TANK, SAID SECOND STAGE TANK HAVING A BAFFLE SECURED THEREIN PROVIDING AN UPPER AND A LOWER CHAMBER, AN INLET MEANS DISPOSED WITHIN THE LOWER CHAMBER, A HEAT EXCHANGE COIL IN THE UPPER CHAMBER SURROUNDED BY A LIQUID BATH, COMMUNICATION BETWEEN THE INLET MEANS AND THE HEAT EXCHANGE CHANGE COIL, COMMUNICATION BETWEEN THE HEAT EXCHANGE COIL AND THE FIRST STAGE TANK, MEANS WITHIN THE FIRST STAGE TANK TO TRANSFER PRECIPITATES FROM THE GAS STREAM TO THE LOWER CHAMBER OF THE SECOND STAGE TANK, MEANS TO CONDUCT GAS FROM THE FIRST STAGE TANK INTO THE UPPER CHAMBER OF THE SECOND STAGE TANK, MEANS TO REDUCE THE PRESSURE OF THE STREAM TO PERMIT HYDRATES TO PRECIPITATE INTO THE LIQUID BATH, MEANS FOR PRECLUDING LOSS OF THE LIQUID BATH, AND MEANS IN THE UPPER CHAMBER OF THE SECOND STAGE TANK FOR WITHDRAWING THE DEHYDRATED GAS THEREFROM.
Claim 4
Dependent Claim
162 words
IN A COLD SEPARATION UNIT FOR DEHYDRATING A NATURAL GAS STREAM COMPRISING A FRIST STAGE TANK AND A SECOND STAGE TANK, SAID SECOND STAGE TANK HAVING A BAFFLE SECURED THEREIN PROVIDING AN UPPER AND A LOWER CHAMBER, AN INLET MEANS DISPOSED WITHIN THE LOWER CHAMBER, A HEAT EXCHANGE COIL IN THE UPPER CHAMBER SURROUNDED BY A LIQUID BATH, COMMUNICATION BETWEEN THE INLET MEANS AND THE HEAT EXCHANGE CHANGE COIL, COMMUNICATION BETWEEN THE HEAT EXCHANGE COIL AND THE FIRST STAGE TANK, MEANS WITHIN THE FIRST STAGE TANK TO TRANSFER PRECIPITATES FROM THE GAS STREAM TO THE LOWER CHAMBER OF THE SECOND STAGE TANK, MEANS TO CONDUCT GAS FROM THE FIRST STAGE TANK INTO THE UPPER CHAMBER OF THE SECOND STAGE TANK, MEANS TO REDUCE THE PRESSURE OF THE STREAM TO PERMIT HYDRATES TO PRECIPITATE INTO THE LIQUID BATH, MEANS FOR PRECLUDING LOSS OF THE LIQUID BATH, AND MEANS IN THE UPPER CHAMBER OF THE SECOND STAGE TANK FOR WITHDRAWING THE DEHYDRATED GAS THEREFROM.
References Cited (Backward Citations)
US2528028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |