US4421672A
Expired / Lapsed
US
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Method of cyclic desorption of adsorption media loaded with adsorbates
Assignee: Bergwerksverband GmbH
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Filing: 1981-10-14
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Granted: 1983-12-20
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Expires: 2001-10-14
Abstract
Abstract A method of cyclic desorption of adsorption agents cyclically loaded with adsorbates is performed in two phases in which a mixture of a desorption vapor and an adsorption vapor is guided over an adsorption medium in a first adsorption phase, a pure desorption vapor is guided over an adsorption medium in a second adsorption phase, and a vapor mixture produced during the second adsorption phase is introduced into the first adsorption phase.
Inventors
- 👤 Karl Rogge
- 👤 Gunther Gappa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:55
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01J; B01J20/00; B01J20/02; B01J20/20; B01J20/30; B01J20/34; B01J20/3416; B01J20/345; B01J20/3458; B01J20/3466; B01J20/3483; B01D2253/00; B01D2253/10; B01D2253/102; B01D2257/00; B01D2257/40; B01D2257/404; B01D2257/70; B01D2257/702; B01D2257/7027; B01D2257/704; B01D2259/00; B01D2259/40; B01D2259/40003; B01D2259/40083; B01D2259/40088; B01D2259/4009; B01D2259/403; B01D2259/41
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
135 words
A method of cyclic desorption of activated carbon cyclically loaded with adsorbates by a vapor, comprising the steps of performing a first desorption phase by guiding a mixture of a desorption vapor and an adsorption vapor over activated carbon; performing a second desorption phase by guiding a pure desorption vapor over said activated carbon; introducing the vapor mixture produced during the second desorption phase as said mixture into the first desorption phase; at least once interrupting the passage of the mixture of a desorption vapor over said activated carbon so that a substantially increased concentration of the adsorbate vapor in said desorption vapor and removal of the desorbed adsorbate out of the pores of the activated carbon is effected; and resuming the flow of said desorption vapor over said activated carbon to continue said desorption.
Claim 2
Independent Claim
135 words
A method of cyclic desorption of activated carbon cyclically loaded with adsorbates by a vapor, comprising the steps of performing a first desorption phase by guiding a mixture of a desorption vapor and an adsorption vapor over activated carbon; performing a second desorption phase by guiding a pure desorption vapor over said activated carbon; introducing the vapor mixture produced during the second desorption phase as said mixture into the first desorption phase; at least once interrupting the passage of the mixture of a desorption vapor over said activated carbon so that a substantially increased concentration of the adsorbate vapor in said desorption vapor and removal of the desorbed adsorbate out of the pores of the activated carbon is effected; and resuming the flow of said desorption vapor over said activated carbon to continue said desorption.
Claim 3
Dependent Claim
36 words
A method as defined in claim 1, wherein said step of performing the second desorption phase includes starting the second desorption phase no later than when no more condensate is produced in the first desorption phase.
Claim 4
Dependent Claim
24 words
A method as defined in claim 2; and further comprising the step of drying said activated carbon after ending of the second desorption phase.
Claim 5
Dependent Claim
23 words
A method as defined in claim 3; and further comprising the step of cooling said activated carbon prior to a new adsorption step.
Claim 6
Dependent Claim
24 words
A method as defined in claim 1, wherein said performing steps include utilizing of at least three adsorption/desorption reactors filled with said activated carbon.
Claim 7
Dependent Claim
20 words
A method as defined in claim 1, wherein said performing steps include utilizing a water vapor as the desorption vapor.
Claim 8
Dependent Claim
28 words
A method as defined in claim 1; and further comprising the step of performing a plurality of such further desorption phases between said first and second desorption phases.
Claim 9
Dependent Claim
27 words
A method as defined in claim 1; and further comprising the step of performing at least one further desorption phase between said first and second desorption phases.
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) | 1986-12-19 | 1987-06-20 | 1987-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-19 | 1991-06-20 | 1991-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-19 | 1995-06-20 | 1995-12-20 | $7700.00 | Window Closed / Lapsed |