Patent US3846993A successfully refreshed from Google Patents.
US3846993A
Expired / Lapsed
US
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Cryogenic extraction process for natural gas liquids
Assignee: Phillips Petroleum Co
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Filing: 1971-02-01
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Granted: 1974-11-12
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Expires: 1991-02-01
Abstract
Abstract A process for the cryogenic extraction of natural gas liquids through the vaporization and direct heat exchange of liquefied natural gas with a wet natural gas.
Inventors
- 👤 B Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:07
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0204; F25J3/0209; F25J3/0214; F25J3/0228; F25J3/0233; F25J3/0238; F25J2200/00; F25J2200/02; F25J2200/70; F25J2205/00; F25J2205/02; F25J2205/04; F25J2205/30; F25J2205/90; F25J2210/00; F25J2210/62; F25J2260/00; F25J2260/10; F25J2270/00; F25J2270/90; F25J2270/904
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
158 words
A PROCESS FOR THE EXTRACTION OF ETHANE AND HEAVIER HYDROCARBONS FROM A WET NATURAL GAS CONTAINING METHANEM ETHANE AND PROPANE AND THE VAPORIZATION OF A PORTION OF A LIQUEFIED NATURAL GAS CONTAINING METHANE, ETHANE AND PROPANE, COMPRISING: PASSING A FIRST STREAM OF THE LIQUEFIED NATURAL GAS AND A SECOND STREAM OF THE WET NATURAL GSS INTO A MIXING ZONE SO AS TO VAPORIZE A PORTION OF THE LIQUEFIED NATURAL GAS AND CONDENSE A PORTION OF THE WET NATURAL GAS; REMOVING FROM THE MIXING ZONE A THIRD STREAM COMPRISING THE VAPORIZED LIQUEFIED NATURAL GAS AND THE WET NATURAL GAS WHICH IS NOT CONDENSED; REMOVING FROM THE MIXING ZONE A FOURTH STREAM COMPRISING THE CONDENSED WET NATURAL GAS AND THE LIQUEFIED NATURAL GAS WHICH IS NOT VAPORIZED; PASSING THE FOURTH STREAM TO A DEMETHANIZER; REMOVING A FIFTH STREAM COMPRISING METHANE FROM THE DEMETHANIZER; AND REMOVING A SIXTH STREAM FROM THE DEMETHANIZER COMPRISING HYDROCARBONS IN THE FOURTH STREAM HEAVIER THAN METHANE.
Claim 2
Dependent Claim
158 words
A PROCESS FOR THE EXTRACTION OF ETHANE AND HEAVIER HYDROCARBONS FROM A WET NATURAL GAS CONTAINING METHANEM ETHANE AND PROPANE AND THE VAPORIZATION OF A PORTION OF A LIQUEFIED NATURAL GAS CONTAINING METHANE, ETHANE AND PROPANE, COMPRISING: PASSING A FIRST STREAM OF THE LIQUEFIED NATURAL GAS AND A SECOND STREAM OF THE WET NATURAL GSS INTO A MIXING ZONE SO AS TO VAPORIZE A PORTION OF THE LIQUEFIED NATURAL GAS AND CONDENSE A PORTION OF THE WET NATURAL GAS; REMOVING FROM THE MIXING ZONE A THIRD STREAM COMPRISING THE VAPORIZED LIQUEFIED NATURAL GAS AND THE WET NATURAL GAS WHICH IS NOT CONDENSED; REMOVING FROM THE MIXING ZONE A FOURTH STREAM COMPRISING THE CONDENSED WET NATURAL GAS AND THE LIQUEFIED NATURAL GAS WHICH IS NOT VAPORIZED; PASSING THE FOURTH STREAM TO A DEMETHANIZER; REMOVING A FIFTH STREAM COMPRISING METHANE FROM THE DEMETHANIZER; AND REMOVING A SIXTH STREAM FROM THE DEMETHANIZER COMPRISING HYDROCARBONS IN THE FOURTH STREAM HEAVIER THAN METHANE.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein the third stream is passed in indirect heat exchange relationship with the second stream.
Claim 4
Dependent Claim
37 words
The process of claim 2 wherein the second stream is removed from a pipeline, and at least a portion of the third stream and at least a portion of the fifth stream are returned to the pipeline.
Claim 5
Dependent Claim
15 words
The process of claim 3 wherein said wet natural gas comprises about 95 percent methane.
Claim 6
Dependent Claim
30 words
The process of claim 1 wherein the ratio of liquefied natural gas to the wet natural gas is in the range of about 10 to about 20 percent by volume.
References Cited (Backward Citations)
US2582148A
Cited
US2952984A
Cited
US2973834A
Cited
US3354663A
Cited
US3236057A
Cited
US3367122A
Cited
US3362175A
Cited
US3407613A
Cited
US3405530A
Cited
US3358461A
Cited
US3707066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |