Patent US4043833A successfully refreshed from Google Patents.
US4043833A
Expired / Lapsed
US
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Method of and device for cleaning the slot-like openings of distribution and collection pipes in an ion exchanger column
Assignee: Hitachi Zosen Inova Steinmueller GmbH
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Filing: 1976-01-21
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Granted: 1977-08-23
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Expires: 1996-01-21
Abstract
Abstract A method of and device for cleaning the slot-like openings of distribution and collection pipes of a continuously operating ion exchanger column. During the treatment phase, the ion exchange particles within the ion exchanger bed do not exchange places, and the bed has an axial movement without temporal interruption. The medium stream which flows through the distribution and collection pipes undergoes a flow reversal for a limited time in periodic succession with initial reduction of the rate of flow.
Inventors
- 👤 Georg Plura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:49
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
186 words
A method of cleaning the periodically blocked slot-like openings of distribution and collection pipes of a continuously operating ion exchange column in which the ion exchange particles during the treatment phase of a medium stream conveyed to an ion exchange bed in said column do not change places, and in which said bed during said treatment phase carries out an axial movement without temporal interruption, which includes the steps of continuing to convey said medium stream into said column, and through said bed and through slot-like openings to an outlet conduit, and when the through-flow per time unit decreases, applying fluid under pressure from an external source to said outlet conduit and openings to create flow under pressure opposed to said medium stream and subjecting said medium stream to periodic short time flow reversals to shock clean said slot-like openings while releasing the pressure of said medium stream on said bed in said column, during said subjecting said medium stream to periodic short time flow reversals the ion exchange particles being not subject to any space change during the flow reversal within the ion exchanger bed.
Claim 2
Independent Claim
186 words
A method of cleaning the periodically blocked slot-like openings of distribution and collection pipes of a continuously operating ion exchange column in which the ion exchange particles during the treatment phase of a medium stream conveyed to an ion exchange bed in said column do not change places, and in which said bed during said treatment phase carries out an axial movement without temporal interruption, which includes the steps of continuing to convey said medium stream into said column, and through said bed and through slot-like openings to an outlet conduit, and when the through-flow per time unit decreases, applying fluid under pressure from an external source to said outlet conduit and openings to create flow under pressure opposed to said medium stream and subjecting said medium stream to periodic short time flow reversals to shock clean said slot-like openings while releasing the pressure of said medium stream on said bed in said column, during said subjecting said medium stream to periodic short time flow reversals the ion exchange particles being not subject to any space change during the flow reversal within the ion exchanger bed.
Claim 3
Dependent Claim
257 words
In combination: a housing adapted to receive an ion exchange bed, inlet conduit means leading into the upper portion of said housing and provided with first opening means for conveying an untreated medium stream into a section of an ion exchange bed inserted in said housing, outlet conduit means provided with slot-like opening means for receiving from said bed treated medium stream, a storage container, first conduit means including a shut-off valve interposed therein and leading from said outlet conduit means to said storage container, second conduit means leading from said storage container into said housing and including a pump interposed in said second conduit means, said storage container also having an outlet adapted selectively to be opened and closed, a closed auxiliary container having a gaseous atmosphere therein, branch conduit means branching off from said outlet conduit means upstream of said shut-off valve and also leading into said auxiliary container for conveying medium from said outlet conduit means into said auxiliary container and compressing said gaseous atmosphere therein, and control means including a control valve communicating with the interior of the upper portion of said housing above a bed in said housing and adapted when open to vent said medium from said housing, said control means also including gauge means operatively connected with said control valve to cause said control valve to open in response to pressure in said upper portion of said housing above a set pressure, thereby controlling brief reversal of medium stream flowing through said slot-like openings to shock clean said slot-like openings.
Claim 4
Dependent Claim
257 words
In combination: a housing adapted to receive an ion exchange bed, inlet conduit means leading into the upper portion of said housing and provided with first opening means for conveying an untreated medium stream into a section of an ion exchange bed inserted in said housing, outlet conduit means provided with slot-like opening means for receiving from said bed treated medium stream, a storage container, first conduit means including a shut-off valve interposed therein and leading from said outlet conduit means to said storage container, second conduit means leading from said storage container into said housing and including a pump interposed in said second conduit means, said storage container also having an outlet adapted selectively to be opened and closed, a closed auxiliary container having a gaseous atmosphere therein, branch conduit means branching off from said outlet conduit means upstream of said shut-off valve and also leading into said auxiliary container for conveying medium from said outlet conduit means into said auxiliary container and compressing said gaseous atmosphere therein, and control means including a control valve communicating with the interior of the upper portion of said housing above a bed in said housing and adapted when open to vent said medium from said housing, said control means also including gauge means operatively connected with said control valve to cause said control valve to open in response to pressure in said upper portion of said housing above a set pressure, thereby controlling brief reversal of medium stream flowing through said slot-like openings to shock clean said slot-like openings.
Claim 5
Independent Claim
214 words
A method of cleaning the periodically blocked slot-like openings of distribution and collection pipes of a continuously operating ion exchange column in which the ion exchange particles during the treatment phase of a medium stream conveyed to the upper portion of a housing above an ion exchange bed in said column do not exchange places, and in which said bed during said treatment phase carries out an axial movement, said liquid passing through said bed to slot-like inlet openings in an outlet pipe and into a storage chamber, ion exchange particles are circulated to be regenerated from said upper portion and the regenerated particles are conveyed to the bottom of said housing below said bed, and liquid is pumped from said storage chamber into the bottom of said housing and upwardly in said bed, the method comprising shutting off said outlet pipe and conveying the fluid under pressure from said outlet pipe to a closed auxiliary vessel, compressing a gaseous atmosphere in said vessel, and venting said upper portion of said housing above said bed upon raising of the pressure in said portion, said liquid under pressure in said auxiliary vessel flowing in reverse direction in said outlet pipe to cause flow in the reverse direction through said slot-like openings to clean said openings.
Claim 6
Independent Claim
214 words
A method of cleaning the periodically blocked slot-like openings of distribution and collection pipes of a continuously operating ion exchange column in which the ion exchange particles during the treatment phase of a medium stream conveyed to the upper portion of a housing above an ion exchange bed in said column do not exchange places, and in which said bed during said treatment phase carries out an axial movement, said liquid passing through said bed to slot-like inlet openings in an outlet pipe and into a storage chamber, ion exchange particles are circulated to be regenerated from said upper portion and the regenerated particles are conveyed to the bottom of said housing below said bed, and liquid is pumped from said storage chamber into the bottom of said housing and upwardly in said bed, the method comprising shutting off said outlet pipe and conveying the fluid under pressure from said outlet pipe to a closed auxiliary vessel, compressing a gaseous atmosphere in said vessel, and venting said upper portion of said housing above said bed upon raising of the pressure in said portion, said liquid under pressure in said auxiliary vessel flowing in reverse direction in said outlet pipe to cause flow in the reverse direction through said slot-like openings to clean said openings.
Claim 7
Dependent Claim
240 words
A continuously operating ion exchange column comprising a housing, an ion exchange bed in said housing, inlet conduit means leading into the upper portion of said housing above said bed, an outlet pipe leading to a liquid storage chamber and having slot-like inlet openings below the upper surface of said bed and a shut-off valve in said outlet pipe, an outlet pipe from said upper portion to convey ion exchange particles to be regenerated and an inlet pipe opening into said housing below said bed to reconvey said regenerated particles to said housing below said bed, a conduit leading from said housing below said bed to said storage chamber and a pump in said conduit for pumping liquid from said storage chamber into the lower portion of said housing below said bed, said storage chamber having an outlet adapted to be opened and closed, an auxiliary closed vessel connected to said outlet pipe between said inlet openings and said shut-off valve to receive liquid from said outlet pipe with a compressed gaseous atmosphere above the liquid, and a pressure-controlled vent connected to the upper portion of said housing to vent said portion at a pressure above a set value, so that closing said shut-off valve creates pressure in said fluid, and said vent in said upper portion opens and fluid from said auxiliary vessel flows into said outlet pipe and through said slot-like openings into said bed and upper portion.
Claim 8
Dependent Claim
240 words
A continuously operating ion exchange column comprising a housing, an ion exchange bed in said housing, inlet conduit means leading into the upper portion of said housing above said bed, an outlet pipe leading to a liquid storage chamber and having slot-like inlet openings below the upper surface of said bed and a shut-off valve in said outlet pipe, an outlet pipe from said upper portion to convey ion exchange particles to be regenerated and an inlet pipe opening into said housing below said bed to reconvey said regenerated particles to said housing below said bed, a conduit leading from said housing below said bed to said storage chamber and a pump in said conduit for pumping liquid from said storage chamber into the lower portion of said housing below said bed, said storage chamber having an outlet adapted to be opened and closed, an auxiliary closed vessel connected to said outlet pipe between said inlet openings and said shut-off valve to receive liquid from said outlet pipe with a compressed gaseous atmosphere above the liquid, and a pressure-controlled vent connected to the upper portion of said housing to vent said portion at a pressure above a set value, so that closing said shut-off valve creates pressure in said fluid, and said vent in said upper portion opens and fluid from said auxiliary vessel flows into said outlet pipe and through said slot-like openings into said bed and upper portion.
References Cited (Backward Citations)
US2742381A
Cited
US3092515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |