US3779889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic cell for the manufacture of oxyhalogens
Assignee: Diamond Shamrock Corp
•
Filing: 1972-04-07
•
Granted: 1973-12-18
•
Expires: 1992-04-07
Abstract
Abstract An electrolytic cell for generation of sodium hypochlorite and other products comprising a cell chamber and plurality of vertical spaced parallel electrically insulating partitions dividing said chamber into individual compartments, monopolar electrodes in the first and last compartments of the group, bipolar electrodes constructed of two spaced parallel straight segments closed at one end intermediate the terminal electrodes, positioned with the straight elements of the electrodes on opposite sides of each partition and with the closed end of adjacent electrodes on opposed lateral edges of adjacent partitions, and means for applying a decomposition electrical potential between the terminal electrodes in the first and last compartments, respectively. Means are provided for creating electrolyte flow in a side-to-side or top-to-bottom manner in each compartment as the electrolyte flows through the chamber. Alkali metal hypochlorite and other chemical compounds are produced by electrolyzing alkali metal halide and other electrolyte solutions which form a gas at the electrode surfaces during electrolysis of the solutions.
Inventors
- 👤 R Loftfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:41
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/24; C25B1/26; C25B11/00; C25B11/02; C25B11/036; C25B9/00; C25B9/70; C25B9/73; C25B9/75
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
14 words
The cell as claimed in claim 1 in which the bipolar electrodes are U-shaped.
Claim 2
Dependent Claim
24 words
The cell as claimed in claim 1 in which the bipolar electrodes are spaced in equal proportions (dimensions) on each side of each partition.
Claim 3
Dependent Claim
29 words
The cell as claimed in claim 1 in which at least one segment of said electrode has an electrically conductive coating on at least a portion of its surface.
Claim 4
Dependent Claim
30 words
The cell as claimed in claim 1 in which the entire electrode is coated with an electrically conductive coating on at least a portion of the surface of each segment.
Claim 5
Dependent Claim
42 words
The cell as claimed in claim 1 in which a cell compartment is disposed centrally of the cell chamber and intermediate an equal number of cell compartments, and at least two monopolar electrodes of like charge are mounted in the intermediate compartment.
Claim 6
Dependent Claim
24 words
The cell as claimed in claim 1 in which the electrodes are bonded to the lateral edges of the partitions by adhesive connection means.
Claim 7
Dependent Claim
211 words
A multi-compartment electrolytic cell comprising: a. a cell chamber having side, bottom and end walls and provided with inlet and outlet means for electrolyte solution; b. a plurality of parallel vertical channels spaced equidistant longitudinally on each side wall of the cell in directly opposed position; c. spacers adapted to be slidably mounted within one group of channels alternating end to end and transversely of the side walls of the cell chamber with a second group of channels, said spacers having a slotted portion; d. vertical partitions slidably mounted within said channels, one lateral edge of each partition positioned within the slotted portion of each spacer, and the opposite edge positioned in the other channel; e. substantially U-shaped foraminous bipolar electrodes having a closed end and a pair of opposed straight segments extending from the end, the segments adapted to be positioned in spaced parallel relation on opposite faces of each partition; f. the closed end of each adjacent electrode being mounted between the rear surface of the spacer and the side wall surface adjacent the spacer; and g. the rear surface of each spacer being spaced from the sidewall of said chAmber a sufficient distance to permit passage of the electrolyte solution from one cell compartment to adjacent cell compartments.
Claim 8
Dependent Claim
24 words
The cell as claimed in claim 8 in which the U-shaped electrodes are spaced in equal proportions (dimensions) on each side of each partition.
Claim 9
Dependent Claim
29 words
The cell as claimed in claim 8 in which at least one segment of said electrode has an electrically conductive coating on at least a portion of its surface.
Claim 10
Dependent Claim
30 words
The cell as claimed in claim 8 in which the entire electrode is coated with an electrically conductive coating on at least a portion of the surface of each segment.
Claim 11
Dependent Claim
42 words
The cell as claimed in claim 8 in which a cell compartment is disposed centrally of the cell chamber and intermediate an equal number of cell compartments and at least two monopolar electrodes of like charge are mounted in the intermediate compartment.
Claim 12
Dependent Claim
131 words
A multi-compartment electrolytic cell comprising: a. a cell chamber having side, bottom, and end walls and provided with inlet and outlet means for electrolyte solution; b. a plurality of electrically insulating, vertical, substantially parallel, spaced partitions dividing said chamber into compartments and substantially traversing said chamber from side wall to side wall, alternate partitions being spaced from the cell bottom to permit electrolyte flow; c. monopolar electrodes mounted in each of the terminal compartments; d. a like plurality of foraminous bipolar electrodes having a closed end and a pair of parallel opposed straight segments extending from the end, the segments adapted to be positioned in spaced parallel relation on opposed faces of each partition, the closed end of each electrode being mounted between a lateral partition edge and a side wall.
Claim 13
Dependent Claim
176 words
A multi-compartment electrolytic cell comprising: a. a cell chamber having side, bottom, and end walls and provided with inlet and outlet means for electrolyte solution; b. a plurality of parallel vertical channels spaced equidistant longitudinally on each side wall of the cell in directly opposed position; c. spacers adapted to be slidably mounted within one group of channels alternating end to end and transversely of the side walls with a second group of channels, said spacers having a slotted portion; d. vertical partitions slidably mounted within said channels, one lateral edge of each partition positioned within the slotted portion of each spacer, the opposite edge positioned in the other channel, alternate partitions being spaced from the cell bottom to permit electrolyte flow; e. substantially U-shaped foraminous bipolar electrodes having a closed end and a pair of opposed straight segments, the segments adapted to be positioned in spaced parallel relation on opposite faces of each partition; and f. the closed end of each electrode being held between the rear surface of the spacer and the side wall.
References Cited (Backward Citations)
US896555A
Cited
US1051060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |