US4035167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of ethane and ethylene from gaseous mixtures
Assignee: ConocoPhillips Co
•
Filing: 1976-02-13
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Granted: 1977-07-12
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Expires: 1996-02-13
Abstract
Abstract A method for recovering ethane and ethylene from a gaseous mixture is disclosed. The method comprises: (1) contacting said gaseous mixture with a solvent to provide ethane- and ethylene-enriched solvent and (2) recovering from said enriched solvent said ethane and ethylene. The solvent used in the method is cyclohexane, cyclohexene, 1-chlorobutane, or 1,1,1-trichloroethane. The method is applicable also to recovering ethane and ethylene from methane containing these materials.
Inventors
- 👤 Charles M. Starks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:48
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/11; B; B01; B01D; B01D53/00; B01D53/14; B01D53/1418; B01D53/1487; B01D53/1493; Y; Y02; Y02P; Y02P20/00; Y02P20/50
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
63 words
A method for recovering ethane and ethylene from a gaseous mixture containing ethane and ethylene wherein said method comprises (1) contacting said gaseous mixture with a liquid phase solvent, selected from the group consisting of cyclohexene, 1-chlorobutane, and 1,1,1-trichloroethane, to absorb said ethane and ethylene from said mixture (2) desorbing by means of heating, depressurizing or a combination thereof, said ethane and ethylene.
Claim 2
Independent Claim
63 words
A method for recovering ethane and ethylene from a gaseous mixture containing ethane and ethylene wherein said method comprises (1) contacting said gaseous mixture with a liquid phase solvent, selected from the group consisting of cyclohexene, 1-chlorobutane, and 1,1,1-trichloroethane, to absorb said ethane and ethylene from said mixture (2) desorbing by means of heating, depressurizing or a combination thereof, said ethane and ethylene.
Claim 3
Dependent Claim
36 words
The method of claim 1 wherein said contacting with solvent step is conducted at a temperature in the range of about -30° to about 50° C. and a pressure of about 3 to about 140 atmospheres.
Claim 4
Dependent Claim
20 words
The method of claim 2 wherein said gaseous mixture contains about 0.05 to about 15 volume percent ethane and ethylene.
Claim 5
Dependent Claim
10 words
The method of claim 3 wherein said solvent is cyclohexene.
Claim 6
Dependent Claim
10 words
The method of claim 3 wherein said solvent is 1-chlorobutane.
Claim 7
Dependent Claim
10 words
The method of claim 3 wherein said solvent is 1,1,1-trichloroethane.
Claim 8
Independent Claim
61 words
A method for recovering ethane and ethylene from methane containing ethane and ethylene wherein said method comprises (1) contacting said methane with a liquid phase solvent, selected from the group consisting of cyclohexene, 1-chlorobutane, and 1,1,1-trichloroethane, to absorb said ethane and ethylene from said mixture and (2) desorbing by means of heating, depressurizing or a combination thereof, said ethane and ethylene.
Claim 9
Independent Claim
61 words
A method for recovering ethane and ethylene from methane containing ethane and ethylene wherein said method comprises (1) contacting said methane with a liquid phase solvent, selected from the group consisting of cyclohexene, 1-chlorobutane, and 1,1,1-trichloroethane, to absorb said ethane and ethylene from said mixture and (2) desorbing by means of heating, depressurizing or a combination thereof, said ethane and ethylene.
Claim 10
Dependent Claim
36 words
The method of claim 7 wherein said contacting with solvent step is conducted at a temperature in the range of about -30° to about 50° C. and a pressure of about 3 to about 140 atmospheres.
Claim 11
Dependent Claim
19 words
The method of claim 8 wherein said methane contains about 0.05 to about 15 volume percent ethane and ethylene.
Claim 12
Dependent Claim
10 words
The method of claim 9 wherein said solvent is cyclohexene.
Claim 13
Dependent Claim
10 words
The method of claim 9 wherein said solvent is 1-chlorobutane.
Claim 14
Dependent Claim
10 words
The method of claim 9 wherein said solvent is 1,1,1-trichloroethane.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-11 | 1981-01-10 | 1981-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-11 | 1985-01-10 | 1985-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-11 | 1989-01-10 | 1989-07-12 | $7700.00 | Window Closed / Lapsed |