Patent JPH03213833A successfully refreshed from Google Patents.
Patent US5147550A successfully refreshed from Google Patents.
US5147550A
Expired / Lapsed
US
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Membrane process and apparatus for removing a component from a fluid stream
Assignee: Membrane Technology and Research Inc
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Filing: 1991-12-05
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Granted: 1992-09-15
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Expires: 2011-12-05
Abstract
Abstract A pervaporation process and system for removing a component from a liquid stream. The process includes a pervaporation separation step and a recovery step. An auxiliary membrane module or set of modules is installed across a condenser and/or recovery unit on the downstream side of the main pervaporation unit. This module takes as its feed a stream from the recovery unit and returns a component-enriched stream to the inlet of the condenser or recovery unit. The module can be sized to produce a discharge stream containing the component in about the same concentration as the feed to be treated. This discharge stream can then be mixed with the feed without adverse effect on the efficiency of the system.
Inventors
- 👤 Johannes G. Wijmans
- 👤 Jurgen Kaschemekat
- 👤 Richard W. Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:12
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01D53/229; B01D53/225; B01D53/226
Claims Analysis
Total Claims: 53
Claim 1
Independent Claim
112 words
A method for increasing efficiency in a pervaporation system for removing a component from a liquid stream, said system including in series a pervaporation unit, a driving means for transmembrane permeation and a recovery unit, comprising: (a) connecting a permselective membrane to said system in such a way that a driving force for transmembrane permeation is provided by said driving means; (b) passing a stream from said recovery unit across said permselective membrane, thereby producing a depleted stream depleted in said component compared with said stream and an enriched stream enriched in said component compared with said stream; and (c) passing said enriched stream to an inlet side of said driving means.
Claim 2
Independent Claim
112 words
A method for increasing efficiency in a pervaporation system for removing a component from a liquid stream, said system including in series a pervaporation unit, a driving means for transmembrane permeation and a recovery unit, comprising: (a) connecting a permselective membrane to said system in such a way that a driving force for transmembrane permeation is provided by said driving means; (b) passing a stream from said recovery unit across said permselective membrane, thereby producing a depleted stream depleted in said component compared with said stream and an enriched stream enriched in said component compared with said stream; and (c) passing said enriched stream to an inlet side of said driving means.
Claim 3
Independent Claim
15 words
The method of claim one, wherein said driving means for transmembrane permeation comprises a condenser.
Claim 4
Independent Claim
15 words
The method of claim one, wherein said driving means for transmembrane permeation comprises a pump.
Claim 5
Independent Claim
15 words
The method of claim one, wherein said driving means for transmembrane permeation comprises an eductor.
Claim 6
Independent Claim
16 words
The method of claim one, wherein said liquid stream is heated before entering said pervaporation system.
Claim 7
Independent Claim
21 words
The method of claim one, wherein said depleted stream has about the same concentration of said component as said liquid stream.
Claim 8
Independent Claim
17 words
The method of claim one, further comprising: (d) recirculating said depleted stream to join said liquid stream.
Claim 9
Independent Claim
17 words
The method of claim one, wherein said stream is heated before being passed across said permselective membrane.
Claim 10
Dependent Claim
24 words
The method of claim 8, wherein said stream is heated by bringing it into heat-exchanging relationship with a residue stream from said pervaporation unit.
Claim 11
Dependent Claim
124 words
A pervaporation process, comprising: (a) passing a liquid stream containing a component through a pervaporation unit; (b) withdrawing from said pervaporation unit a component-enriched stream; (c) passing said component-enriched stream to a condenser to produce a condensed stream; (d) passing said condensed stream to a recovery unit; (e) withdrawing from said recovery unit a stream; (f) passing said stream across a permselective membrane wherein a driving force for transmembrane permeation is provided at least partially by said condenser; (g) withdrawing from said permselective membrane a depleted stream depleted in said component compared with said stream; (h) withdrawing from said permselective membrane an enriched stream enriched in said component compared with said stream; (i) passing said enriched stream to an inlet side of said condenser.
Claim 12
Dependent Claim
124 words
A pervaporation process, comprising: (a) passing a liquid stream containing a component through a pervaporation unit; (b) withdrawing from said pervaporation unit a component-enriched stream; (c) passing said component-enriched stream to a condenser to produce a condensed stream; (d) passing said condensed stream to a recovery unit; (e) withdrawing from said recovery unit a stream; (f) passing said stream across a permselective membrane wherein a driving force for transmembrane permeation is provided at least partially by said condenser; (g) withdrawing from said permselective membrane a depleted stream depleted in said component compared with said stream; (h) withdrawing from said permselective membrane an enriched stream enriched in said component compared with said stream; (i) passing said enriched stream to an inlet side of said condenser.
Claim 13
Dependent Claim
12 words
The process of claim 10, wherein said recovery unit comprises a decanter.
Claim 14
Dependent Claim
13 words
The process of claim 10, wherein said recovery unit comprises a distillation unit.
Claim 15
Dependent Claim
13 words
The process of claim 10, wherein said recovery unit comprises an adsorption unit.
Claim 16
Dependent Claim
14 words
The process of claim 10, wherein said recovery unit comprises a solvent extraction unit.
Claim 17
Dependent Claim
16 words
The process of claim 10, wherein said liquid stream is heated before entering said pervaporation unit.
Claim 18
Dependent Claim
21 words
The process of claim 10, wherein said depleted stream has about the same concentration of said component as said liquid stream.
Claim 19
Dependent Claim
17 words
The process of claim 10, further comprising: (j) recirculating said depleted stream to join said liquid stream.
Claim 20
Dependent Claim
17 words
The process of claim 10, wherein said stream is heated before being passed across said permselective membrane.
Claim 21
Dependent Claim
24 words
The process of claim 18, wherein said stream is heated by bringing it into heat-exchanging relationship with a residue stream from said pervaporation unit.
Claim 22
Dependent Claim
110 words
A pervaporation process, comprising: (a) passing a liquid stream containing a component through a pervaporation unit; (b) withdrawing from said pervaporation unit a component-enriched stream; (c) passing said component-enriched stream to a condenser to produce a condensed stream; (d) passing said condensed stream to a recovery unit; (e) withdrawing from said recovery unit a stream; (f) passing said stream across a permselective membrane; (g) withdrawing from said permselective membrane a depleted stream depleted in said component compared with said stream; (h) withdrawing from said permselective membrane an enriched stream enriched in said component compared with said stream; (i) passing said enriched stream to an inlet side of said recovery unit.
Claim 23
Dependent Claim
110 words
A pervaporation process, comprising: (a) passing a liquid stream containing a component through a pervaporation unit; (b) withdrawing from said pervaporation unit a component-enriched stream; (c) passing said component-enriched stream to a condenser to produce a condensed stream; (d) passing said condensed stream to a recovery unit; (e) withdrawing from said recovery unit a stream; (f) passing said stream across a permselective membrane; (g) withdrawing from said permselective membrane a depleted stream depleted in said component compared with said stream; (h) withdrawing from said permselective membrane an enriched stream enriched in said component compared with said stream; (i) passing said enriched stream to an inlet side of said recovery unit.
Claim 24
Dependent Claim
12 words
The process of claim 20, wherein said recovery unit comprises a decanter.
Claim 25
Dependent Claim
13 words
The process of claim 20, wherein said recovery unit comprises a distillation unit.
Claim 26
Dependent Claim
13 words
The process of claim 20, wherein said recovery unit comprises an adsorption unit.
Claim 27
Dependent Claim
14 words
The process of claim 20, wherein said recovery unit comprises a solvent extraction unit.
Claim 28
Dependent Claim
16 words
The process of claim 20, wherein said liquid stream is heated before entering said pervaporation unit.
Claim 29
Dependent Claim
21 words
The process of claim 20, wherein said depleted stream has about the same concentration of said component as said liquid stream.
Claim 30
Dependent Claim
17 words
The process of claim 20, further comprising: (j) recirculating said depleted stream to join said liquid stream.
Claim 31
Dependent Claim
17 words
The process of claim 20, wherein said stream is heated before being passed across said permselective membrane.
Claim 32
Dependent Claim
24 words
The process of claim 28, wherein said stream is heated by bringing it into heat-exchanging relationship with a residue stream from said pervaporation unit.
Claim 33
Dependent Claim
69 words
Apparatus for separating a component from a liquid stream, comprising: (a) a pervaporation unit; (b) a driving means for transmembrane permeation connected to an outlet from said pervaporation unit; (c) a recovery unit connected downstream of said driving means; (d) a permselective membrane connected to said recovery unit and said driving means, in such a way that a driving force for transmembrane permeation is provided by said driving means.
Claim 34
Dependent Claim
69 words
Apparatus for separating a component from a liquid stream, comprising: (a) a pervaporation unit; (b) a driving means for transmembrane permeation connected to an outlet from said pervaporation unit; (c) a recovery unit connected downstream of said driving means; (d) a permselective membrane connected to said recovery unit and said driving means, in such a way that a driving force for transmembrane permeation is provided by said driving means.
Claim 35
Dependent Claim
15 words
The apparatus of claim 30, wherein said driving means for transmembrane permeation comprises a condenser.
Claim 36
Dependent Claim
15 words
The apparatus of claim 30, wherein said driving means for transmembrane permeation comprises a pump.
Claim 37
Dependent Claim
15 words
The apparatus of claim 30, wherein said driving means for transmembrane permeation comprises an eductor.
Claim 38
Dependent Claim
12 words
The apparatus of claim 30, wherein said recovery unit comprises a decanter.
Claim 39
Dependent Claim
13 words
The apparatus of claim 30, wherein said recovery unit comprises a distillation unit.
Claim 40
Dependent Claim
13 words
The apparatus of claim 30, wherein said recovery unit comprises an adsorption unit.
Claim 41
Dependent Claim
14 words
The apparatus of claim 30, wherein said recovery unit comprises a solvent extraction unit.
Claim 42
Dependent Claim
97 words
Apparatus for separating a component from a liquid stream, comprising: (a) a pervaporation unit; (b) a driving means for transmembrane permeation connected to an outlet from said pervaporation unit; (c) a recovery unit connected downstream of said driving means; (d) a permselective membrane connected to said recovery unit in such a way that a stream from said recovery unit can pass to a feed side of said permselective membrane and a treated stream from said permselective membrane can return to said recovery unit, (e) second driving means for providing a transmembrane driving force across said permselective membrane.
Claim 43
Dependent Claim
97 words
Apparatus for separating a component from a liquid stream, comprising: (a) a pervaporation unit; (b) a driving means for transmembrane permeation connected to an outlet from said pervaporation unit; (c) a recovery unit connected downstream of said driving means; (d) a permselective membrane connected to said recovery unit in such a way that a stream from said recovery unit can pass to a feed side of said permselective membrane and a treated stream from said permselective membrane can return to said recovery unit, (e) second driving means for providing a transmembrane driving force across said permselective membrane.
Claim 44
Dependent Claim
15 words
The apparatus of claim 38, wherein said driving means for transmembrane permeation comprises a condenser.
Claim 45
Dependent Claim
15 words
The apparatus of claim 38, wherein said driving means for transmembrane permeation comprises a pump.
Claim 46
Dependent Claim
15 words
The apparatus of claim 38, wherein said driving means for tranmembrane permeation comprises an eductor.
Claim 47
Dependent Claim
12 words
The apparatus of claim 38, wherein said recovery unit comprises a decanter.
Claim 48
Dependent Claim
13 words
The apparatus of claim 38, wherein said recovery unit comprises a distillation unit.
Claim 49
Dependent Claim
13 words
The apparatus of claim 38, wherein said recovery unit comprises an adsorption unit.
Claim 50
Dependent Claim
14 words
The apparatus of claim 38, wherein said recovery unit comprises a solvent extraction unit.
Claim 51
Dependent Claim
13 words
The apparatus of claim 38, wherein said second driving means comprises a condenser.
Claim 52
Dependent Claim
13 words
The apparatus of claim 38, wherein said second driving means comprises a pump.
Claim 53
Dependent Claim
13 words
The apparatus of claim 38, wherein said second driving means comprises an eductor.
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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) | 1995-09-15 | 1996-03-16 | 1996-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-15 | 2000-03-16 | 2000-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-15 | 2004-03-16 | 2004-09-15 | $7700.00 | Window Closed / Lapsed |