US5679134A
Expired / Lapsed
US
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Device and process for the separation of gas by adsorption
Assignee: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Filing: 1995-11-08
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Granted: 1997-10-21
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Expires: 2015-11-08
Abstract
Abstract A device for the separation of gas by adsorption, of the so-called VSA or MPSA type, comprises, between a utilization line (L) and a source (S) of gaseous mixture to be separated, at least one module (M) comprising in series a reversible rotatable machine (R), typically a Roots, an adsorber (A) and a shut-off valve (V). The rotary machine (R) is alternately actuated, in one direction during a first phase of pressurization and of production and then, in the other direction, during a second phase of depressurization and desorption. Used particularly in the production of small and medium volumes of oxygen in modular installations.
Inventors
- 👤 Jean-Renaud Brugerolle
- 👤 Christian Monereau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:29
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/047; B01D53/0476; B01D53/0407; B01D53/0446; B01D53/053; B01D2256/00; B01D2256/12; B01D2259/00; B01D2259/40; B01D2259/40007; B01D2259/40011; B01D2259/40013; B01D2259/40015; B01D2259/40028; B01D2259/4003; B01D2259/40043; B01D2259/4005; B01D2259/40052; B01D2259/40056; B01D2259/40058; B01D2259/40064; B01D2259/40066; B01D2259/40083; B01D2259/40088; B01D2259/401; B01D2259/402; B01D53/0473
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
154 words
Process for using a device for the separation of gas by adsorption, said device comprising at least one module having: an adsorber having an inlet adapted to receive a gaseous mixture to be separated and an outlet connectable to a utilization line of gas impoverished in at least one of the constituents of the gaseous mixture; a reversible rotary machine having first and second opposed gas passages, the first passage communicating continuously with a source of said gaseous mixture, the second passage communicating continuously with the inlet of the adsorber; and means to actuate the rotary machine sequentially in opposite directions of rotation, wherein for each module, the process comprises: supplying the gaseous mixture to be separated to the inlet of the adsorber and alternately actuating the rotary machine during a first phase of pressurization and of production in one direction, then during a second phase of depressurization and desorption in the other direction.
Claim 2
Dependent Claim
154 words
Process for using a device for the separation of gas by adsorption, said device comprising at least one module having: an adsorber having an inlet adapted to receive a gaseous mixture to be separated and an outlet connectable to a utilization line of gas impoverished in at least one of the constituents of the gaseous mixture; a reversible rotary machine having first and second opposed gas passages, the first passage communicating continuously with a source of said gaseous mixture, the second passage communicating continuously with the inlet of the adsorber; and means to actuate the rotary machine sequentially in opposite directions of rotation, wherein for each module, the process comprises: supplying the gaseous mixture to be separated to the inlet of the adsorber and alternately actuating the rotary machine during a first phase of pressurization and of production in one direction, then during a second phase of depressurization and desorption in the other direction.
Claim 3
Dependent Claim
22 words
Process according to claim 1, wherein of the rotary machine is interrupted for a predetermined period near the end of each phase.
Claim 4
Dependent Claim
18 words
Process according to claim 1, wherein the speed of the rotary machine is different according to the phases.
Claim 5
Dependent Claim
29 words
Process according to claim 1, wherein the outlet line is connectable to the utilization line via a valve, and the value is alternately open and closed during each phase.
Claim 6
Dependent Claim
17 words
Process according to claim 4, wherein the valve is closed during an intermediate period of each phase.
Claim 7
Dependent Claim
26 words
Process according to claim 1, wherein during a first portion of the first phase, said impoverished gas is simultaneously introduced into the adsorber through its outlet.
Claim 8
Dependent Claim
25 words
Process according to claim 6, wherein during a first portion of the second phase, said impoverished gas escapes simultaneously from the outlet of the adsorber.
Claim 9
Dependent Claim
25 words
Process according to claim 7, using at least two modules, wherein the first portions of the first and the second phases have the same duration.
Claim 10
Dependent Claim
22 words
Process according to claim 7, using two modules, wherein for each module, the first and the second phases have the same duration.
Claim 11
Dependent Claim
25 words
Process according to claim 7, using three modules, wherein for each module, the duration of the second phase is twice that of the first phase.
Claim 12
Dependent Claim
21 words
Process according to claim 10, wherein the rotary machine is driven substantially at the same speed during each of the phases.
Claim 13
Dependent Claim
28 words
Process according to claim 1, wherein during the first phase, the rotary machine is driven at a speed less than its speed of rotation during the second phase.
Claim 14
Dependent Claim
13 words
Process according to claim 1, wherein the mixture to be separated is air.
Claim 15
Dependent Claim
97 words
Device for the separation of gas by adsorption, comprising at least one module having: an adsorber having an inlet adapted to receive a gaseous mixture to be separated and an outlet connectable to a utilization line of gas impoverished in at least one of the constituents of the gaseous mixture; a reversible rotary machine having first and second opposed gas passages, the first passage communicating continuously with a source of said gaseous mixture, the second passage communicating continuously with the inlet of the adsorber; and means to actuate the rotary machine sequentially in opposite directions of rotation.
Claim 16
Dependent Claim
97 words
Device for the separation of gas by adsorption, comprising at least one module having: an adsorber having an inlet adapted to receive a gaseous mixture to be separated and an outlet connectable to a utilization line of gas impoverished in at least one of the constituents of the gaseous mixture; a reversible rotary machine having first and second opposed gas passages, the first passage communicating continuously with a source of said gaseous mixture, the second passage communicating continuously with the inlet of the adsorber; and means to actuate the rotary machine sequentially in opposite directions of rotation.
Claim 17
Dependent Claim
22 words
Device according to claim 14, which comprises at least two said modules disposed in parallel between the source and the utilization line.
Claim 18
Dependent Claim
19 words
Device according to claim 14, which further comprises a thermal regenerator switchable between the first passage and the source.
Claim 19
Dependent Claim
22 words
Device according to claim 14, wherein the adsorber is supported on a frame sheltering the rotary machine and comprising sound installation means.
Claim 20
Dependent Claim
22 words
Device according to claim 17, wherein the inlet and the outlet of the adsorber are located at the base of the adsorber.
Claim 21
Dependent Claim
17 words
Device according to claim 14, wherein the rotary machine is actuated by a variable speed electric motor.
Claim 22
Dependent Claim
12 words
Device according to claim 14, wherein the rotary machine is a Roots.
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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) | 2000-10-20 | 2001-04-21 | 2001-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-20 | 2005-04-21 | 2005-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-20 | 2009-04-21 | 2009-10-21 | $7700.00 | Window Closed / Lapsed |