US3775187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aqueous zinc chloride electrolyte saturated with chlorine
Assignee: Energy Development Associates Inc
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Filing: 1971-11-18
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Granted: 1973-11-27
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Expires: 1991-11-18
Abstract
Abstract An aqueous solution of zinc chloride is saturated with chlorine gas by flowing a zinc chloride solution through a saturator vessel in continuous flow from top to bottom thereof, passing chlorine gas in very finely divided form into the bottom of the vessel into contact with the moving zinc chloride solution so that chlorine not dissolving in the zinc chloride solution rises to the top of the vessel, and recirculating chlorine gas from the top of the vessel, mixing it with additional chlorine gas to be fed to the bottom of the vessel and passing recycle and feed chlorine gases into the zinc chloride solution in finely divided form at the bottom of the vessel.
Inventors
- 👤 H Bjorkman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:00
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/08; H01M12/085; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
46 words
bubbling the chlorine through the inlet duct to the zinc chloride solution at a velocity of from 1 to 1,000 centimeters per second, so that bubbles will form, ranging in size from about 50 to 1,000 microns, resulting in a zinc chloride solution saturated with chlorine;
Claim 2
Dependent Claim
65 words
A method according to claim 1 wherein the temperature of the zinc chloride solution charged to the volume of moving zinc chloride solution is from -20* to 70*C., the pressure is from 0.5 to 10 atmospheres, the saturated zinc chloride solution is employed as a feed to a high energy density secondary battery and the unsaturated zinc chloride to be saturated is from the battery.
Claim 3
Dependent Claim
43 words
The method according to claim 1 wherein the aqueous solution of zinc chloride to be saturated with chlorine is from the effluent of a battery or plurality of batteries, and the chlorine gas is from chlorine hydrate which decomposes to chlorine and water.
Claim 4
Dependent Claim
6 words
removing undissolved chlorine from the vessel;
Claim 5
Dependent Claim
21 words
mixing the chlorine from Step No. 3 with additional chlorine from the chlorine source and passing it to the inlet duct;
Claim 6
Dependent Claim
20 words
passing the chlorine saturated zinc chloride solution from the outlet means of the vessel to the electrode compartment inlet means;
Claim 7
Dependent Claim
19 words
passing the zinc chloride from the electrode compartment outlet means to the solution inlet means in the vessel; and
Claim 8
Dependent Claim
17 words
maintaining the zinc chloride in the vessel at a level below that of the solution inlet means.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |