US3618769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for ion exchange process control
Assignee: Individual
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Filing: 1969-09-12
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Granted: 1971-11-09
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Expires: 1989-09-12
Abstract
Abstract A method and apparatus for ion exchange process control which delivers a voltage proportional to the quotient of two resistances, a first resistance being measured between two electrodes disposed in a ion exchange bed near the point where the effluent leaves and a second resistance being measured between two electrodes in an insulated cell full of exhausted resin, the untreated liquid passing through the cell before entering the ion exchange device. The voltage is amplified and operates a reading instrument and delivers two signals, the presence or absence of such signals triggers a warning and/or an automatic regeneration process.
Inventors
- 👤 Manuel Adroer Iglesias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:34
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/041; B; B01; B01J; B01J47/00; B01J47/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
81 words
The apparatus defined in claim 1 wherein: said first signal is a voltage having a value proportional to the resistance of said ion exchange material, said second signal is a voltage having a value proportional to the resistance measured in said container means and said means for determining comprises electrical circuit means for determining a ratio of one of said voltages to the other and for producing an output signal voltage of a value proportional to the value of said ratio.
Claim 2
Dependent Claim
213 words
Apparatus for producing a signal indicative of the state of exhaustion of an ion exchange material, comprising: a bed of ion exchange material, a source of solution to be treated by said ion exchange material, means for receiving said solution after treatment by said ion exchange material, conduit means, connecting said source and said means for receiving for passing said solution through said bed of ion exchange material, a container, means for passing at least the portion of said solution to be treated through said container prior to passing said solution through said bed of ion exchange material, first means for determining the electrical resistance between at least two points in said bed of ion exchange material adjacent the effluent end of said bed of ion exchange material and for producing a first signal proportional to the value of same, a fixed resistance equivalent to the resistance of the exhausted ion exchange material, second means for determining the electrical resistance of a combination of said fixed resistance and the resistance of said solution passing through said container means and for producing a second signal proportional to the value of same, and means for determining the value of a ratio of one signal to the other and for producing output signal indicative of same.
Claim 3
Dependent Claim
36 words
The apparatus defined in claim 3 wherein said combination of resistances comprises the parallel combination of a fixed resistance aNd the resistance of said untreated solution measured between at least two points in said container means.
Claim 4
Dependent Claim
54 words
The apparatus defined in claim 3 wherein said combination of resistances comprises first and second parallel resistance branches, said first branch comprising a fixed resistance and said second branch comprising the series combination of a fixed resistance and the resistance of said untreated solution measured between at least two points in said container means.
Claim 5
Dependent Claim
88 words
The apparatus defined in claim 3 wherein: said container means comprises two containers having at least a portion of the solution to be treated flowing therethrough, one of said containers having a resistance constant greater than the other, and wherein said combination of resistances comprises first and second parallel resistance branches, said first branch comprising the series combination of a fixed resistance and the resistance of said solution in the other of said containers and said second branch comprises the resistance of said solution in said one container.
Claim 6
Dependent Claim
273 words
Apparatus for determining the state of exhaustion of ion exchange material and for controlling an ion exchange system responsive to said determination, comprising: a bed of ion exchange material, a source of solution to be treated by said ion exchange material, means for receiving said solution after treatment by said bed of ion exchange material, conduit means connecting said source and said means for receiving for passing said solution through said ion exchange material, container means having therein a quantity of said ion exchange material in an exhausted state, means for passing at least a portion of said solution to be treated through said container means and through said exhausted ion exchange material prior to passing said solution through said bed of ion exchange material, first means for determining the value of the electrical resistance between at least two points of said bed of ion exchange material adjacent to the effluent end of said bed of ion exchange material and for producing a first signal indicative of the value of same, second means for determining the value of the electrical resistance between at least two points in said exhausted ion exchange material and for producing a second signal indicative of the value of same, means for determining the value of a ratio of one of said signals to the other and for producing an output signal indicative of same, and means for utilizing said output signal comprising measurement means to provide a measurement of the state of exhaustion of said ion exchange material and a control means for controlling the operation of said ion exchange responsive to the values of said output signal.
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |