US3673065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic removal of greasy matter from aqueous wastes
Assignee: TETRA RESOURCES Inc A CORP OF
•
Filing: 1970-04-08
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Granted: 1972-06-27
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Expires: 1990-04-08
Abstract
Abstract Fat-water emulsion systems are de-emulsified by impressing direct current electrical energy therethrough and positioned such that a carefully defined anolyte stream is formed. The anolyte stream, having low pH values, breaks the emulsion, enabling the fat to rise to the surface and to be skimmed off.
Inventors
- 👤 Harry T Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:11
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/06; C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/463; C10; C10G; C10G33/00; C10G33/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
17 words
The process of claim 1 wherein the anode potential ranges between about 2.7 and about 12 volts.
Claim 2
Dependent Claim
16 words
The process of claim 1 where the pH of the anolyte stream is below about 5.8.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein the pH near the anodes is below about four.
Claim 4
Dependent Claim
19 words
The method of claim 1 wherein acid is added to the system to aid in breaking the fat-water emulsion.
Claim 5
Dependent Claim
23 words
The method of claim 1 wherein a flocculating agent is added to the system to aid in making solids rise to the surface.
Claim 6
Dependent Claim
14 words
The process of claim 1 wherein the anodes are made of high silica iron.
Claim 7
Dependent Claim
18 words
The process of claim 1 wherein the anodes are substantially perpendicular to the bottom of the longitudinal tank.
References Cited (Backward Citations)
US1540929A
Cited
US1529349A
Cited
US1612180A
Cited
US1617741A
Cited
US1827714A
Cited
US2047989A
Cited
US2110899A
Cited
US2849395A
Cited
US2825686A
Cited
US3458434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |