Patent US3923958A successfully refreshed from Google Patents.
US3923958A
Expired / Lapsed
US
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Method of removing aromatic compounds olefins, acetylenes and carbon monoxide from feed streams
Assignee: Tenneco Chemicals Inc
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Filing: 1973-03-27
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Granted: 1975-12-02
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Expires: 1993-03-27
Abstract
Abstract Normal paraffinic hydrocarbons having from 5 to 25 carbon atoms are used to prevent or minimize the foaming that occurs when liquid sorbents that comprise bimetallic salt complexes having the generic formula MIMIIXn. Aromatic, wherein MI is a Group I-B metal, MII is a group III-A metal, X is halogen, n is the sum of the valences of MI and MII, and Aromatic is a monocyclic aromatic compound having 6 to 12 carbon atoms, are brought into contact with large volumes of gases. The preferred anti-foaming agents for these processes are mineral oil and non-detergent motor oil.
Inventors
- 👤 Roy G Turnbo
- 👤 Donald A Keyworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:39
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D53/00; B01D53/14; B01D53/1493
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
142 words
IN A PROCESS FOR SEPARATING AT LEAST ONE COMPLEXIBLE LIGAND SELECTED FROM THE GROUP CONSISTING OF AROMATIC COMPOUNDS, OLEFINS, ACETYLENES, CARBON MONOXIDE, AND MIXTURES THEREOF FROM A FEED STREAM CONTAINING SAID LIGAND WHICH COMPRISES CONTACTING THE FEED STREAM WITH A LIQUID SORBENT HAVING THE FORMULA MIMIIXN.AROMATIC, WHEREIN MI REPRESENTS A GROUP 1-B METAL, MII REPRESENTS A GROUP III-A METAL. X REPRESENTS HALOGEN, N IS THE SUM OF THE VALENCES OF MI AND MII, AND AROMATIC REPRESENTS A MONOCYCLIC AROMATIC COMPOUND HAVING 6 TO 12 CARBON ATOMS, THEREBY FORMING A COMPLEX OF THE SORBENT AND THE COMPLEXIBLE LIGAND AND SEPARATING SAID COMPLEXIBLE LIGAND FROM SAID COMPLEX, THE IMPROVEMENT THAT COMPRISES INCORPORATING IN THE LIQUID SORBENT ABOUT 0.2 TO 2 PERCENT. BASED ON THE WEIGHT OF THE SORBENT, OF AN ANTIFOAM AGENT THAT IS A PARAFFINIC HYDROCARBON HAVING FROM 5 TO 25 CARBON ATOMS.
Claim 2
Dependent Claim
142 words
IN A PROCESS FOR SEPARATING AT LEAST ONE COMPLEXIBLE LIGAND SELECTED FROM THE GROUP CONSISTING OF AROMATIC COMPOUNDS, OLEFINS, ACETYLENES, CARBON MONOXIDE, AND MIXTURES THEREOF FROM A FEED STREAM CONTAINING SAID LIGAND WHICH COMPRISES CONTACTING THE FEED STREAM WITH A LIQUID SORBENT HAVING THE FORMULA MIMIIXN.AROMATIC, WHEREIN MI REPRESENTS A GROUP 1-B METAL, MII REPRESENTS A GROUP III-A METAL. X REPRESENTS HALOGEN, N IS THE SUM OF THE VALENCES OF MI AND MII, AND AROMATIC REPRESENTS A MONOCYCLIC AROMATIC COMPOUND HAVING 6 TO 12 CARBON ATOMS, THEREBY FORMING A COMPLEX OF THE SORBENT AND THE COMPLEXIBLE LIGAND AND SEPARATING SAID COMPLEXIBLE LIGAND FROM SAID COMPLEX, THE IMPROVEMENT THAT COMPRISES INCORPORATING IN THE LIQUID SORBENT ABOUT 0.2 TO 2 PERCENT. BASED ON THE WEIGHT OF THE SORBENT, OF AN ANTIFOAM AGENT THAT IS A PARAFFINIC HYDROCARBON HAVING FROM 5 TO 25 CARBON ATOMS.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein the antifoam agent is a paraffinic hydrocarbon having 12 to 20 carbon atoms.
Claim 4
Dependent Claim
12 words
The process of claim 1 wherein the antifoam agent is mineral oil.
Claim 5
Dependent Claim
12 words
The process of claim 1 wherein the antifoam agent is lubricating oil.
Claim 6
Dependent Claim
13 words
The process of claim 1 wherein the antifoam agent is non-detergent motor oil.
Claim 7
Dependent Claim
11 words
The process of claim 1 wherein the antifoam agent is pentane.
Claim 8
Dependent Claim
27 words
The process of claim 1 wherein 0.5 to 1 percent, based on the weight of the sorbent, of the antifoam agent is incorporated into the liquid sorbent.
Claim 9
Dependent Claim
13 words
The process of claim 1 wherein the liquid sorbent comprises a CuAlX4.Aromatic complex.
Claim 10
Dependent Claim
16 words
The process of claim 1 wherein the liquid sorbent is a solution of CuAlCl4.toluene in toluene.
Claim 11
Dependent Claim
12 words
The process of claim 1 wherein the complexible ligand is carbon monoxide.
References Cited (Backward Citations)
US3651159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |