US4149023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for reclaiming a used active carbon
Assignee: Kureha Corp
•
Filing: 1978-04-19
•
Granted: 1979-04-10
•
Expires: 1998-04-19
Abstract
Abstract A method for continuously reclaiming used active carbon particles by application of an electrical current to electrodes having a plurality of apertures of a defined size and which are vertically spaced in a vertical column through which the used particles flow downwardly, filling the space between the electrodes.
Inventors
- 👤 Toshio Mizuno
- 👤 Heiichiro Murakami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:26
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/30; C01B32/354; C01B32/36; C01B32/366; Y; Y10; Y10S; Y10S159/00; Y10S159/01; Y10S159/03
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
127 words
Adsorption apparatus comprising: a vertical column, and at least two vertically spaced electrodes mounted within said column, said electrodes being provided with a plurality of openings large enough to allow passage of adsorbent particles therethrough and having a total area at least 25% of the total surface area of said electrodes, said electrodes bridging the vertical walls of said column so that substantially all particles entering from the top must pass through the electrodes; an adsorber including means for forming a plurality of fluidized beds of the particulate adsorbent; means for continuously transferring the used particulate adsorbent exiting the adsorber onto the top of the upper electrode for regeneration; means for continuously transferring the regenerated particulate adsorbent from the bottom of the vertical column to the adsorber
Claim 2
Dependent Claim
127 words
Adsorption apparatus comprising: a vertical column, and at least two vertically spaced electrodes mounted within said column, said electrodes being provided with a plurality of openings large enough to allow passage of adsorbent particles therethrough and having a total area at least 25% of the total surface area of said electrodes, said electrodes bridging the vertical walls of said column so that substantially all particles entering from the top must pass through the electrodes; an adsorber including means for forming a plurality of fluidized beds of the particulate adsorbent; means for continuously transferring the used particulate adsorbent exiting the adsorber onto the top of the upper electrode for regeneration; means for continuously transferring the regenerated particulate adsorbent from the bottom of the vertical column to the adsorber
Claim 3
Dependent Claim
51 words
The apparatus of claim 1 wherein at least one of said electrodes is in the form of a plate which carries a number of hollow legs on its lower surface, said legs being in communication with said openings and being large enough to allow passage of the used adsorbent particles therethrough.
Claim 4
Dependent Claim
21 words
The apparatus of claim 1 wherein said adsorber is mounted in the upper section of said vertical column, above said electrodes.
References Cited (Backward Citations)
US656600A
Cited
US1071442A
Cited
US1396718A
Cited
US1400959A
Cited
US1634478A
Cited
US1634480A
Cited
GB269849A
Cited
US1863361A
Cited
US4025610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-09 | 1982-10-09 | 1983-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-09 | 1986-10-09 | 1987-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-09 | 1990-10-09 | 1991-04-10 | $7700.00 | Window Closed / Lapsed |