US3823529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for separating carbon monoxide
Assignee: Standard Oil Co
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Filing: 1973-02-23
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Granted: 1974-07-16
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Expires: 1993-02-23
Abstract
Abstract There is described the separation of carbon monoxide from gaseous mixtures by the combined use of liquid barrier permeation and metal complexing techniques. The liquid barrier is in contact with a semi-permeable film membrane, and the barrier contains complex-forming metal ions in aqueous solution. The metal ions may be, for example, cuprous or other metal ions, and mixtures of these metal ions, with or without other cations, may be used. The separation of carbon monoxide from lower alkanes, e.g., ethane and methane, or hydrogen is of particular interest.
Inventors
- 👤 R Hughes
- 👤 E Steigelmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:09
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01D53/228; C; C07; C07C; C07C7/00; C07C7/148; C07C7/152; C07C7/156
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
13 words
The method of claim 1 in which said metal ions are cuprous ions.
Claim 2
Dependent Claim
11 words
The method of claim 2 in which said mixture contains ethane.
Claim 3
Independent Claim
126 words
A method for separating carbon monoxide which comprises contacting a vaporous mixture containing carbon monoxide and a lower alkane with a first side of an essentially solid, water-insoluble, semi-permeable membrane in contact with an aqueous liquid barrier, said semi-permeable membrane being permeable to said vaporous mixture in the absence of said aqueous liquid, said liquid barrier having metal ions which combine with carbon monoxide to form a water-soluble complex, the partial pressure of carbon monoxide on a second side of said semi-permeable membrane being sufficiently less than the partial pressure of carbon monoxide in said vaporous mixture to provide separated carbon monoxide on said second side of said semi-permeable membrane, and removing separated carbon monoxide from the vicinity of said second side of said semi-permeable membrane.
Claim 4
Dependent Claim
12 words
The method of claim 4 in which said lower alkane is ethane.
Claim 5
Dependent Claim
13 words
The method of claim 5 in which said metal ions are cuprous ions.
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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |