US5314528A
Expired / Lapsed
US
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Permeation process and apparatus
Assignee: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Filing: 1992-11-16
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Granted: 1994-05-24
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Expires: 2012-11-16
Abstract
Abstract The apparatus includes two permeators mounted in series, namely a simple permeator with an inlet and two outlets, and a reflux permeator. The production gas results from the combination of the two permeated products. Application to the production of impure hydrogen.
Inventors
- 👤 Christian Monereau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:14
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01D53/225; B01D53/226; C; C01; C01B; C01B3/00; C01B3/50; C01B3/501; C01B2203/00; C01B2203/04; C01B2203/0405; C01B2203/0465; C01B2203/048
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
237 words
A process of obtaining production of an impure light gas by permeation from a gas mixture containing said light gas, comprising the steps of: providing a permeation apparatus comprising a first permeation stage including at least one permeator of a first type having a high pressure side with an inlet and an outlet, and a low pressure side with an outlet only, and a second permeation stage including at least one permeator of a second type having a high pressure side with an inlet and an outlet, and a low pressure side with an inlet and an outlet; introducing the gas mixture under pressure into the inlet of the high pressure side of a permeator of the first permeation stage; passing residual gas from the outlet of the high pressure side of a permeator of the first permeation stage to the inlet of the high pressure side of a permeator of the second permeation stage; withdrawing residual gas from the outlet of the high pressure side of a permeator of the second permeation stage; introducing into the inlet of the low pressure side of at least one permeator of the second permeation stage a gas mixture having a light gas content lower than the light gas content of the production gas; and withdrawing permeate gas from the outlets of the low pressure sides of the permeators of the first and second permeation stages as said production gas.
Claim 2
Dependent Claim
237 words
A process of obtaining production of an impure light gas by permeation from a gas mixture containing said light gas, comprising the steps of: providing a permeation apparatus comprising a first permeation stage including at least one permeator of a first type having a high pressure side with an inlet and an outlet, and a low pressure side with an outlet only, and a second permeation stage including at least one permeator of a second type having a high pressure side with an inlet and an outlet, and a low pressure side with an inlet and an outlet; introducing the gas mixture under pressure into the inlet of the high pressure side of a permeator of the first permeation stage; passing residual gas from the outlet of the high pressure side of a permeator of the first permeation stage to the inlet of the high pressure side of a permeator of the second permeation stage; withdrawing residual gas from the outlet of the high pressure side of a permeator of the second permeation stage; introducing into the inlet of the low pressure side of at least one permeator of the second permeation stage a gas mixture having a light gas content lower than the light gas content of the production gas; and withdrawing permeate gas from the outlets of the low pressure sides of the permeators of the first and second permeation stages as said production gas.
Claim 3
Dependent Claim
41 words
The process of claim 1, wherein the gas mixture introduced into the inlet of the low pressure side of said at least one permeator of the second permeation stage is a residual gas from the permeation apparatus at a reduced pressure.
Claim 4
Dependent Claim
52 words
The process of claim 2, wherein said residual gas introduced into the inlet of the low pressure side of said at least one permeator of the second permeation stage is part of the residual gas withdrawn from the outlet of the high pressure side of the permeator of the second permeation stage.
Claim 5
Dependent Claim
11 words
The process of claim 1 wherein the production gas is hydrogen.
Claim 6
Independent Claim
199 words
An apparatus for the production of an impure light gas by permeation from a gas mixture containing said light gas, comprising: a first permeation stage comprising at least one permeator of a first type having a high pressure side with an inlet connectable to a source of said gas mixture and an outlet, and a low pressure side with an outlet only, said outlet of the low pressure side being connected to a product line supplying said impure light gas; a second permeation stage comprising at least one permeator of a second type having a high pressure side with an inlet and an outlet, and a low pressure side with an outlet connected to the product line and an inlet; means for connecting the outlet of the high pressure side of a permeator in the first permeation stage to the inlet of the high pressure side of a permeator in the second permeation stage; and means for supplying to the inlet of the low pressure side of the permeator in the second permeation stage a gas mixture having a light gas content lower than the light gas content of the production impure light gas available in the product line.
Claim 7
Independent Claim
199 words
An apparatus for the production of an impure light gas by permeation from a gas mixture containing said light gas, comprising: a first permeation stage comprising at least one permeator of a first type having a high pressure side with an inlet connectable to a source of said gas mixture and an outlet, and a low pressure side with an outlet only, said outlet of the low pressure side being connected to a product line supplying said impure light gas; a second permeation stage comprising at least one permeator of a second type having a high pressure side with an inlet and an outlet, and a low pressure side with an outlet connected to the product line and an inlet; means for connecting the outlet of the high pressure side of a permeator in the first permeation stage to the inlet of the high pressure side of a permeator in the second permeation stage; and means for supplying to the inlet of the low pressure side of the permeator in the second permeation stage a gas mixture having a light gas content lower than the light gas content of the production impure light gas available in the product line.
Claim 8
Dependent Claim
54 words
The apparatus of claim 5, wherein said means for supplying to the inlet of the low pressure side of the permeator in the second permeation stage comprises a reflux duct connected to said outlet of the high pressure side of a permeator in said second permeation stage and including at least one pressure-reducing valve.
Claim 9
Dependent Claim
21 words
The apparatus of claim 5, wherein the first permeation stage comprises at least two serially arranged permeators of the first type.
Claim 10
Dependent Claim
21 words
The apparatus of claim 7, wherein the second permeation stage comprises at least two serially arrange permeators of the second type.
Claim 11
Dependent Claim
39 words
The apparatus of claim 8, wherein the outlet of the high pressure side of an upstream permeator in the second permeation stage is connected to the inlet of the high pressure side of a downstream permeator in that stage.
Claim 12
Dependent Claim
37 words
The apparatus of claim 9, wherein the inlet of the low pressure side of each permeator in the second permeation stage is connected to the outlet of the high pressure side thereof via a pressure reducing valve.
Claim 13
Dependent Claim
22 words
The apparatus of claim 5, wherein the first permeation stage comprises at least two permeators of the first type connected in parallel.
Claim 14
Dependent Claim
22 words
The apparatus of claim 11, wherein the second permeation stage comprises at least two permeators of the second type connected in parallel.
Claim 15
Dependent Claim
37 words
The apparatus of claim 12, wherein the inlet of the low pressure side of each permeator in the second permeation stage is connected to the outlet of the high pressure side thereof via a pressure reducing valve.
References Cited (Backward Citations)
US3208197A
Cited
US3961917A
Cited
US4104037A
Cited
US3246450A
Cited
US3250080A
Cited
US3339341A
Cited
US3442002A
Cited
US4119417A
Cited
US4140499A
Cited
US4130403A
Cited
US4180388A
Cited
GB2053021A
Cited
US4478719A
Cited
EP0051469A1
Cited
US4707342A
Cited
US4597777A
Cited
JPS59207827A
Cited
US4435191A
Cited
JPS60238120A
Cited
US4718921A
Cited
JPS63123421A
Cited
JPS63123422A
Cited
US5064446A
Cited
JPH01143626A
Cited
US4836833A
Cited
US4994094A
Cited
EP0358551A1
Cited
EP0430304A2
Cited
US4931070A
Cited
JPH03245812A
Cited
EP0463535A1
Cited
US5185014A
Cited
US5169412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-05-23 | 1997-11-22 | 1998-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-23 | 2001-11-22 | 2002-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-23 | 2005-11-22 | 2006-05-24 | $7700.00 | Window Closed / Lapsed |