US4614525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure swing process for the adsorptive separation of gaseous mixtures
Assignee: Bayer AG
•
Filing: 1985-04-01
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Granted: 1986-09-30
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Expires: 2005-04-01
Abstract
Abstract An improved continuously operating adsorption process for the purification and separation of gaseous mixtures by pressure swing adsorption is disclosed. The improvement is achieved by heating the gaseous mixture to be separated by heat exchange with the vacuum pump which consists of at least two in series operating pumps. The present process is especially suited for efficiently producing oxygen-enriched air.
Inventors
- 👤 Gerhard Reiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:36
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/047; B01D53/0476; B01D2253/00; B01D2253/10; B01D2253/106; B01D2253/108; B01D2256/00; B01D2256/12; B01D2257/00; B01D2257/10; B01D2257/102; B01D2257/80; B01D2259/00; B01D2259/40; B01D2259/40011; B01D2259/40058; B01D2259/4006; B01D2259/402; B01D2259/403; B01D2259/414; B01D2259/4141; B01D2259/4145; B01D53/26; B01D53/261
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
In a continuously operating adsorption process for the purification and separation of gaseous mixtures by pressure swing adsorption, comprising alternately permeating at least two adsorbent beds with the gaseous mixture to be separated at at least 1 bar (abs), removing the non-absorbed component at the adsorber outlet, desorbing the beds countercurrent to adsorption by means of a vacuum pump, and removing the desorbed phase and/or the non-adsorbed phase as product, the improvement which comprises heating the gaseous mixture to be separated by heat exchange with the vacuum pump, wherein the vacuum pump comprises at least two pumping units having different suction capacities and connected in series.
Claim 2
Dependent Claim
106 words
In a continuously operating adsorption process for the purification and separation of gaseous mixtures by pressure swing adsorption, comprising alternately permeating at least two adsorbent beds with the gaseous mixture to be separated at at least 1 bar (abs), removing the non-absorbed component at the adsorber outlet, desorbing the beds countercurrent to adsorption by means of a vacuum pump, and removing the desorbed phase and/or the non-adsorbed phase as product, the improvement which comprises heating the gaseous mixture to be separated by heat exchange with the vacuum pump, wherein the vacuum pump comprises at least two pumping units having different suction capacities and connected in series.
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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) | 1989-09-29 | 1990-03-31 | 1990-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-29 | 1994-03-31 | 1994-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-29 | 1998-03-31 | 1998-09-30 | $7700.00 | Window Closed / Lapsed |