Patent US3705477A successfully refreshed from Google Patents.
US3705477A
Expired / Lapsed
US
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Condensate analyzer
Assignee: Ecodyne Corp
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Filing: 1971-02-08
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Granted: 1972-12-12
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Expires: 1991-02-08
Abstract
Abstract A method and apparatus for stripping carbon dioxide from a liquid for use in measuring true acid conductivity of boiler feed condensate. The condensate is passed through a standard LarsonLane column connected in series with a column, packed with an inert packing material. An inert gas is bubbled through the packed column to displace the carbon dioxide by mechanical action.
Inventors
- 👤 John F Longo
- 👤 Joseph H Duff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:00
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/021; B; B01; B01J; B01J47/00; B01J47/14; C; C01; C01B; C01B32/00; C01B32/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
19 words
The method as defined in claim 1 wherein said inert packing material being 1/4 -inch type stainless steel Rachig-Rings.
Claim 2
Dependent Claim
14 words
The method as defined in claim 1 wherein said inert gas being prepurified nitrogen.
Claim 3
Independent Claim
168 words
A method determining whether the anions resin within a demineralizer is dangerously exhausted, comprising the steps of: a. taking a first test sample from the demineralizer influent; b. passing the first test sample through a column containing cation resin; c. passing the effluent from step (b) through a column containing an inert packing material while bubbling inert gas therethrough so as to scrub carbon dioxide dissolved therein; d. measuring the conductivity of the effluent from step (c); e. taking a second test sample from the demineralizer effluent; f. passing the second test sample through a column containing cation resin; g. passing the effluent from step (f) through a column containing inert packing material while bubbling an inert gas therethrough so as to scrub carbon dioxide dissolved therein; h. measuring the conductivity of the effluent from step (g); and i. comparing the conductivity from step (d) with the conductivity from step (h) so as to determine the ability of the anion resin to remove anions from the demineralizer influent.
Claim 4
Dependent Claim
19 words
The method as defined in claim 4 wherein said inert packing material being 1/4 -inch type stainless steel Rachig-Rings.
Claim 5
Dependent Claim
14 words
The method as defined in claim 4 wherein said inert gas being prepurified nitrogen.
References Cited (Backward Citations)
US2606870A
Cited
US2617766A
Cited
US2711995A
Cited
US2807582A
Cited
US2938868A
Cited
US2834466A
Cited
US3458438A
Cited
US3505784A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |