US3575294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counterflow, moving bed type, ion exchange apparatus
Assignee: Mitsubishi Chemical Aqua Solutions Co Ltd
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Filing: 1968-09-18
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Granted: 1971-04-20
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Expires: 1988-09-18
Abstract
Abstract In a counterflow moving bed type ion exchange apparatus in which an ion exchange resin is supplied to the upper portion of a column and a liquid being treated is supplied to the bottom of the column to flow upwardly through the moving resin bed, liquid jets are used to separate a predetermined quantity of the spent resin from the moving resin bed. The separated resin is circulated through a regenerating system including a washing column and a counterflow type regenerating column.
Inventors
- 👤 Mamoru Hirowatari
- 👤 Takeo Kawai
- 👤 Kangai Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:27
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
206 words
A counterflow moving bed type ion exchange column wherein an ion exchange resin is charged into the upper portion of said column to flow downwardly as a moving bed, and wherein a liquid being treated is supplied into the bottom of said column to flow upwardly through said bed of said ion exchange resin, said column comprising an essentially horizontal filter near the upper end of said column, a resin charging chamber beneath said filter, an ion exchange region beneath said resin charging chamber, a first perforated resin supporting member interposed between said resin charging chamber and said ion exchange region, an inlet pipe for said ion exchange resin, said pipe opening into said resin charging chamber, a second perforated resin supporting member at the bottom of said ion exchange region, a resin separating chamber beneath said second perforated resin supporting member, a plurality of liquid nozzles disposed in said separating chamber to separate a predetermined quantity of spent resin from the resin bed contained in said ion exchange region, means to discharge said separated spent resin, and means connected to said column to cause a liquid to be treated to flow upwardly through said separating chamber, said ion exchange region and said resin charging chamber.
Claim 2
Dependent Claim
49 words
The ion exchange column as claimed in claim 2 wherein said ion exchange resin is supplied through said inlet pipe to said resin charging chamber together with an accompanying liquid from a regenerating system, and wherein means is provided for said resin charging chamber to remove said accompanying liquid.
Claim 3
Dependent Claim
49 words
The ion exchange column as claimed in claim 3 wherein said inlet pipe extends through substantially the center of said filter to open into said resin charging chamber, and said means for removing said accompanying liquid is in the form of an annulus near the periphery of said filter.
Claim 4
Dependent Claim
68 words
The ion exchange column as claimed in claim 2 wherein said resin separating chamber contains a plurality of axially extending nozzles, each of said nozzles having a liquid ejecting port adjacent the lower surface of said second perforated resin supporting member, and a plurality of collecting nozzles of relatively short axial length, each of said collecting nozzles having a liquid ejecting port directed to said resin discharge means.
Claim 5
Dependent Claim
52 words
The ion exchange column according to claim 1 wherein each of said liquid nozzles has a liquid ejection nozzle directed in the tangential direction with respect to a circle having its center at the axis of said column whereby to create a whirling motion of the liquid below said perforated supporting member.
Claim 6
Dependent Claim
159 words
A continuous type ion exchange treating apparatus comprising a combination of a counterflow moving bed type ion exchange column, a washing column to wash the spent resin discharged from said ion exchange column, and a counterflow type regenerating column, said regenerating column comprising, an upper filter, a lower filter, an inlet pipe leading from said washing column and opening upwardly near the center of said lower filter, means located at an intermediate point of said regenerating column to admit a regenerating agent, a water collecting pipe located above said means for admitting said regenerating agent to collect and discharge rinsing water, an inlet pipe connected near the top of said regenerating column to admit said rinsing water through said upper filter, a transfer pipe connected between said ion exchange column and said regenerating column to transfer regenerated and rinsed ion exchange resin to said ion exchange column, and a discharge pipe connected to the bottom of said regenerating column.
Claim 7
Dependent Claim
52 words
The continuous type ion exchange treating apparatus according to claim 7 wherein said counterflow type regenerating column is provided with a resin transfer chamber at its upper end, and said transfer pipe extends through said transfer chamber, said transfer chamber having a volume larger than that of the resin transferred each time.
Claim 8
Dependent Claim
75 words
The apparatus according to claim 7 wherein said washing column and said regenerating column are connected in series across said ion exchange column so that said spent resin discharged from said ion exchange column is supplied to said regenerating column through said washing column together with a liquid being treated, and wherein means is provided to directly supply said liquid to the bottom of said regenerating column to assists upward flow of said resin therein.
Claim 9
Dependent Claim
22 words
The apparatus according to claim 7 wherein said washing column is of a backwash type and is positioned above said regenerating column.
Claim 10
Dependent Claim
88 words
The apparatus according to claim 7 wherein an upright regenerating column and an upright rinsing column are combined in a U-shaped configuration, wherein the spent resin is supplied to the upper end of said regenerating column to flow downwardly against the upward flow of a regenerating agent supplied to the bottom of said regenerating column, and wherein the regenerated resin is supplied to the bottom of said rinsIng column to flow upwardly against the downward flow of a rinsing liquid supplied into the top of said rinsing column.
Claim 11
Dependent Claim
206 words
In apparatus for treating liquid by means of an ion exchange resin of the type including a counterflow moving bed type ion exchange column wherein the ion exchange resin is charged into the upper portion of said column to flow downwardly as a moving bed and wherein a liquid being treated is supplied into the bottom of said column to flow upwardly through said bed of said ion exchange resin and a counterflow type regenerating column wherein said ion exchange resin spent in said ion exchange column is regenerated and rinsed and said regenerated ion exchange resin is supplied to the upper portion of said ion exchange column, the improvement which comprises a separating chamber at the bottom of said ion exchange column, a plurality of liquid ejecting nozzles mounted in said separating chamber to separate and collect a predetermined constant quantity of spent ion exchange resin and to transfer said constant quantity to said regenerating column, and a resin transfer chamber provided at the upper end of said regenerating column, said resin transfer chamber having a volume sufficient to accommodate said predetermined quantity of said ion exchange resin whereby said constant quantity of resin is circulated through said ion exchange column and said regenerating column.
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |