US3979287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorption process
Assignee: Rohm and Haas Co
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Filing: 1975-07-09
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Granted: 1976-09-07
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Expires: 1995-07-09
Abstract
Abstract A process for recovering a dissolved component in high concentration from liquid streams containing said component in low concentration comprising adsorbing said component on a bed of adsorbent, passing a solution containing a high concentration of said component through said bed to increase the amount of component absorbed on said bed and passing an eluant through the bed to regenerate the adsorbent and produce an eluate having a high concentration of said component.
Inventors
- 👤 Pierre Roland Edouard Vulliez-Sermet
- 👤 Elio Fiorentino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:39
CPC Classifications
C; C10; C10G; C10G25/00; B; B01; B01D; B01D15/00; C02; C02F; C02F1/00; C02F1/28; C11; C11B; C11B13/00; C11B3/00; C11B3/10; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/74
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
101 words
A process for separating in concentrated form a dissolved component from a liquid stream in which the dissolved component is present in low concentration which comprises passing the liquid stream through a bed of adsorbent until the capacity of the bed for adsorption of the dissolved component from the liquid streams is substantially reached, passing a more concentrated solution of the dissolved component through the bed of adsorbent until it is more highly loaded with the dissolved component, and thereafter passing an eluant through the bed to regenerate the adsorbent and yield an eluate containing the dissolved component in high concentration.
Claim 2
Dependent Claim
101 words
A process for separating in concentrated form a dissolved component from a liquid stream in which the dissolved component is present in low concentration which comprises passing the liquid stream through a bed of adsorbent until the capacity of the bed for adsorption of the dissolved component from the liquid streams is substantially reached, passing a more concentrated solution of the dissolved component through the bed of adsorbent until it is more highly loaded with the dissolved component, and thereafter passing an eluant through the bed to regenerate the adsorbent and yield an eluate containing the dissolved component in high concentration.
Claim 3
Dependent Claim
30 words
The process of claim 1 wherein the more highly concentrated solution of the dissolved component used to increase the loading of the adsorbent bed is provided from a recirculating stream.
Claim 4
Dependent Claim
50 words
The process of claim 1 wherein the more highly concentrated solution of the dissolved component used to increase the loading of the adsorbent bed is a recirculating stream maintained under steady state conditions with a make up stream consisting of the fraction remaining after separation of eluant from the eluate.
Claim 5
Dependent Claim
17 words
The process of claim 3 wherein the recirculating stream contains at least 5% by weight of adsorbate.
Claim 6
Dependent Claim
20 words
The process of claim 3 wherein the recirculating stream contains more than 5 up to 50% by weight of adsorbate.
Claim 7
Dependent Claim
20 words
The process of claim 3 wherein the stream to be treated contains 50 ppm to 5% by weight of adsorbate.
Claim 8
Dependent Claim
21 words
The process of claim 3 wherein the stream to be trated contains 500 ppm to 5% by weight of the adsorbate.
Claim 9
Dependent Claim
12 words
The process of claim 1 for the removal of phenol from water.
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) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |