US3607740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion-exchange processes
Assignee: Permutit Co Ltd
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Filing: 1969-07-07
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Granted: 1971-09-21
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Expires: 1989-07-07
Abstract
Abstract In a continuous ion-exchange process for treating water with movement of the resin through a circuit that includes an absorber and a regenerator, the resin is in the form of magnetic beads less than 295 microns in size. These beads form beds presenting no more resistance to flow than beds of conventional resin beads, but as they do not break up on passing through pumps they can be forced into the absorber without interruption of the service flows.
Inventors
- 👤 Ewart Ingham Akeroyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:55
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/10; B01J39/00; B01J39/08; B01J39/16; B01J39/17; C; C22; C22B; C22B3/00; C22B3/20; C22B3/42; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
17 words
A process according to claim 1 in which the beads are less than 150 microns in size.
Claim 2
Dependent Claim
13 words
A process according to claim 1 in which the particles are copolymer beads.
Claim 3
Dependent Claim
16 words
A process according to claim 1 in which the particles are remagnetized on entering the regenerator.
Claim 4
Dependent Claim
18 words
A process according to claim 4 in which the particles are demagnetized on leaving the absorber and regenerator.
Claim 5
Dependent Claim
86 words
In an ion-exchange plant having a resin movement circuit comprising an absorber, a regenerator, and connections between the absorber and regenerator for the movement of resin from the one to the other and back again, the improvement which comprises a pump in each connection, magnetic ion-exchange resin particles in the form of beads less than 295 microns in size formed into a bed in each of the absorber and the regenerator, and devices for magnetizing the particles in their passage from each pump through the circuit.
Claim 6
Dependent Claim
23 words
A plant according to claim 6 including devices for demagnetizing the particles in each connection before they reach the pump in that connection.
Claim 7
Dependent Claim
23 words
A plant according to claim 6 including a pump for supplying regenerant to the regenerator and means for starting all three pumps together.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |