US3902984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bipolar electrolytic cell
Assignee: Nippon Soda Co Ltd
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Filing: 1974-03-07
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Granted: 1975-09-02
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Expires: 1994-03-07
Abstract
Abstract An improved bipolar diaphragm electrolytic cell assembly wherein the cell assembly is constructed of a plurality of bipole units which divide the cell into a plurality of single cells and have a structure which can be easily assembled. The connection between the anodic and cathodic portions of each bipole unit comprises a hollow partition having a current connecting plate in the hollow portion of the partition, with electroconductive bars extending from inside the pectinate anodes and cathodes to the current connection plate.
Inventors
- 👤 Naoshi Yoshida
- 👤 Shotaro Kiga
- 👤 Takashi Yamamoto
- 👤 Kazuo Shirasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:52
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/17; C25B9/19; C25B9/01; C25B9/70; C25B9/73; C25B9/75; C25B9/77
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
310 words
A BIPOLAR DIAPHRAM ELECTROLYTIC CELL ASSEMBLY, DIVIDED INTO A PLRALITY OF SINGLE CELLS AS A PLURALITY OF BPOLE UNITS EA CH OF SAID BIPOLE UNITS HAVING ELONGATED COMB-LIKE ANODES AND CATHODES (4,5) INCLUDING PECTINATE ANODE AND CATHODE HOLLOW PORTIONS, A DIAPHRAM ON SAID CATHODES, A BACKSCREEN (56) HAVING OPENINGS, ON WHICH SAID CATHODES ARE CONNECTED, A PARTITION (6) WITH HOLLOW PORTIONS HAVING A BACKPLATE (65) WITH OPENINGS (63) FOR SECURING SAID ANODES, A WINDOW (64) FOR SECURING SAID CATHODE OPPOSITE SAID BACKPLATE (65) FROM ING CATHODIC COMPARTMENTS BY COMBINING THE HOLLOW PORTIONS OF SAID CATHODES AND SAID PARTITION, FURTHER COMPRISING: A. AN ELECTRODE SECURING MEANS INCLUDING ONE OR MORE ELECTROCONDUCTIVE BARS (43), 52) DISPOSED IN SAID HOLLOW PORTIONS OF EACH ANODE AND EACH CATHODE AND EXTENDING TO SAID PARTITION HOLLOW PORTION, B. ONE OR MORE CURRENT CONNECTING PLATES (8) HAVING CONNECTING OPENINGS (81, 82) FOR CONNECTING TO THE ELCTROCONDUCTIVE BARS OF THE ANODES AND CATHODES, DISPOSED IN SAID PARTITION HOLLOW PORTION OF EACH BIPOLE UNIT, SAID ELECTROCONDUCTIVE BARS (43, 52) OF THE ANODES AND CATODES BEING ELECTRICALLY INTERCONNECTED TO SAID CONNECTING OPENINGS (81,82) OF SAID CURRENT CONNECTING PLATES, EACH OF SAID CONNECTING ANODE OPENINGS (81) BEING S SITUATED AS TO BE OPPOSITE TO THE BACKSCREEN (56) BETWEEN ADJACENT CATHODES, C. SAID ELECTROCONDUCTIVE BARS OF SAID ANODES HAVING A FLANGE (45) FOR MOUNTING TO THE BACK PLATE (65 AN EXTENDING THROUGH SAID OPENING IN THE BACKPLATE AND THE OPENING IN THE CURRENT CONNECTING PLATE (8), D. SAID ELETROCONDUCTIVE BARS OF SAID CATHODES HAVING A FLANGE (54) FOR MOUNTING TO THE BACKSCREEN (56) AND EXTENDING THROUGH SAID OPENING IN THE BACKSCREEN AND THE OPENING IN THE CURRENT CONNECTING PLATE (8), AND, E. SCREW MEANS (47,58) SECURING SAID ELECTROCONDUCTIVE BARS OF SAID ANODES TO SAID BACKPLATE AND CONNECTING PLATE, AND SECURING SID ELECTRCONDUCTIVE BARS OF SAID CATHODES TO SAID BACKSCREEN AND CONNECTING PLATE.
Claim 2
Dependent Claim
310 words
A BIPOLAR DIAPHRAM ELECTROLYTIC CELL ASSEMBLY, DIVIDED INTO A PLRALITY OF SINGLE CELLS AS A PLURALITY OF BPOLE UNITS EA CH OF SAID BIPOLE UNITS HAVING ELONGATED COMB-LIKE ANODES AND CATHODES (4,5) INCLUDING PECTINATE ANODE AND CATHODE HOLLOW PORTIONS, A DIAPHRAM ON SAID CATHODES, A BACKSCREEN (56) HAVING OPENINGS, ON WHICH SAID CATHODES ARE CONNECTED, A PARTITION (6) WITH HOLLOW PORTIONS HAVING A BACKPLATE (65) WITH OPENINGS (63) FOR SECURING SAID ANODES, A WINDOW (64) FOR SECURING SAID CATHODE OPPOSITE SAID BACKPLATE (65) FROM ING CATHODIC COMPARTMENTS BY COMBINING THE HOLLOW PORTIONS OF SAID CATHODES AND SAID PARTITION, FURTHER COMPRISING: A. AN ELECTRODE SECURING MEANS INCLUDING ONE OR MORE ELECTROCONDUCTIVE BARS (43), 52) DISPOSED IN SAID HOLLOW PORTIONS OF EACH ANODE AND EACH CATHODE AND EXTENDING TO SAID PARTITION HOLLOW PORTION, B. ONE OR MORE CURRENT CONNECTING PLATES (8) HAVING CONNECTING OPENINGS (81, 82) FOR CONNECTING TO THE ELCTROCONDUCTIVE BARS OF THE ANODES AND CATHODES, DISPOSED IN SAID PARTITION HOLLOW PORTION OF EACH BIPOLE UNIT, SAID ELECTROCONDUCTIVE BARS (43, 52) OF THE ANODES AND CATODES BEING ELECTRICALLY INTERCONNECTED TO SAID CONNECTING OPENINGS (81,82) OF SAID CURRENT CONNECTING PLATES, EACH OF SAID CONNECTING ANODE OPENINGS (81) BEING S SITUATED AS TO BE OPPOSITE TO THE BACKSCREEN (56) BETWEEN ADJACENT CATHODES, C. SAID ELECTROCONDUCTIVE BARS OF SAID ANODES HAVING A FLANGE (45) FOR MOUNTING TO THE BACK PLATE (65 AN EXTENDING THROUGH SAID OPENING IN THE BACKPLATE AND THE OPENING IN THE CURRENT CONNECTING PLATE (8), D. SAID ELETROCONDUCTIVE BARS OF SAID CATHODES HAVING A FLANGE (54) FOR MOUNTING TO THE BACKSCREEN (56) AND EXTENDING THROUGH SAID OPENING IN THE BACKSCREEN AND THE OPENING IN THE CURRENT CONNECTING PLATE (8), AND, E. SCREW MEANS (47,58) SECURING SAID ELECTROCONDUCTIVE BARS OF SAID ANODES TO SAID BACKPLATE AND CONNECTING PLATE, AND SECURING SID ELECTRCONDUCTIVE BARS OF SAID CATHODES TO SAID BACKSCREEN AND CONNECTING PLATE.
Claim 3
Dependent Claim
34 words
The bipolar diaphragm electrolytic cell defined in claim 1 wherein said screw means securing said electroconductive bars of said anodes comprises nuts and a spiral groove provided to the electroconductive bar of the anode.
Claim 4
Dependent Claim
53 words
The bipolar diaphragm electrolytic cell defined in claim 2 wherein the backscreen has openings with removably attached lids, each of said openings with removably attached lids providing access to said nut and being disposed at the point opposite the connecting opening of the current connecting plate for the electroconductive bar of the anode.
Claim 5
Dependent Claim
35 words
The bipolar diaphragm electrolytic cell defined in claim 3 wherein said lid has a screw and the electroconductive bar of the anode has an opening therethrough for reception of said screw at the top thereof.
Claim 6
Dependent Claim
35 words
The bipolar diaphragm electrolytic cell defined in claim 1 wherein said screw means securing said electroconductive bars of said cathodes comprises a nut and a spiral groove provided to the electroconductive bar of the cathode.
Claim 7
Dependent Claim
53 words
The bipolar diaphragm electrolytic cell defined in claim 5 wherein the backplate has openings with removably attached lids, each of said openings with removably attached lids providing access to said nut and being disposed at the point opposite the connecting opening of the current connecting plate with the electroconductive bar of the cathode.
Claim 8
Dependent Claim
43 words
The bipolar diaphragm electrolytic cell defined in claim 1 wherein the cell housing is channel-shaped, aNd the anode side wall and the cathode side wall are connected to said cell housing like a flange to form a box-like outer shell of the cell.
Claim 9
Dependent Claim
23 words
The bipolar diaphragm electrolytic cell defined in claim 7 wherein said cell housing includes guides for vertically mounting and removing the bipole units.
Claim 10
Dependent Claim
32 words
The bipolar diaphragm electrolytic cell defined in claim 1 wherein the anodes and cathodes are perpendicular to said partition, and the surfaces of anode are parallel with the opposing surfaces of cathode.
Claim 11
Dependent Claim
273 words
A bipolar diaphragm electrolytic cell for electrolytic decomposition of chlor-alkali divided into a plurality of single cells by plural bipole units, each of said bipole units having an elongated comb-like cathode assembly which includes pectinate hollow cathodes and a backscreen to which said cathodes are connected, a diaphragm on said cathodes, elongated pectinate hollow anodes and a hollow partition which has a backplate having openings for fixing said anodes and a window for fixing said cathode assembly at the side opposite said backplate, the cathodic compartments being formed by combining the hollow portions of said cathodes and said partition, which comprises one or more electroconductive bars disposed in said hollow portions of said anode and each cathode respectively and extending to said hollow portion of the partition, and one or more current connecting plates connected mechanically and electrically to said electroconductive bars of cathodes and disposed in said hollow portion of the partition of each bipole unit, said current connecting plate having openings for connecting to the electroconductive bars of the anodes, each of said electroconductive bars of the anodes having a flange for mounting on the backplate and a threaded end and extending through the opening in the backplate and the opening in the current connecting plate and being secured by nuts, the nuts interleaving with the current connecting plate, said backscreen having openings with removably attached lids, each of said openings in the backscreen providing access to a nut disposed at the backscreen side of the current connecting plate and being disposed at the point opposite the connecting point of the current connecting plate with the electroconductive bar of the anode.
Claim 12
Dependent Claim
273 words
A bipolar diaphragm electrolytic cell for electrolytic decomposition of chlor-alkali divided into a plurality of single cells by plural bipole units, each of said bipole units having an elongated comb-like cathode assembly which includes pectinate hollow cathodes and a backscreen to which said cathodes are connected, a diaphragm on said cathodes, elongated pectinate hollow anodes and a hollow partition which has a backplate having openings for fixing said anodes and a window for fixing said cathode assembly at the side opposite said backplate, the cathodic compartments being formed by combining the hollow portions of said cathodes and said partition, which comprises one or more electroconductive bars disposed in said hollow portions of said anode and each cathode respectively and extending to said hollow portion of the partition, and one or more current connecting plates connected mechanically and electrically to said electroconductive bars of cathodes and disposed in said hollow portion of the partition of each bipole unit, said current connecting plate having openings for connecting to the electroconductive bars of the anodes, each of said electroconductive bars of the anodes having a flange for mounting on the backplate and a threaded end and extending through the opening in the backplate and the opening in the current connecting plate and being secured by nuts, the nuts interleaving with the current connecting plate, said backscreen having openings with removably attached lids, each of said openings in the backscreen providing access to a nut disposed at the backscreen side of the current connecting plate and being disposed at the point opposite the connecting point of the current connecting plate with the electroconductive bar of the anode.
Claim 13
Dependent Claim
116 words
The bipolar diaphragm electrolytic cell defined in claim 10 wherein said current connecting plate has openings for connecting to the electroconductive bars of the cathodes, and each of said electroconductive bars of the cathodes has a flange for securing to the current connecting plate and a threaded end and extends through said opening in the current connecting plate and is secured by a nut wherein the backplate has openings with removably attached lids, each of said openings with removably attached lids being disposed at the point opposite the connecting point of the current connecting plate with the electroconductive bar of the cathode and providing access to said nut secured to the electroconductive bar of the cathode.
Claim 14
Dependent Claim
44 words
The bipolar diaphragm electrolytic diaphragm cell defined in claim 10 wherein the cell housing is channel-shaped and the anode side wall and the cathode side wall are connected to said cell housing like a flange to form a box-like outer shell of the cell.
Claim 15
Dependent Claim
44 words
The bipolar diaphragm electrolytic diaphragm cell defined in claim 10 wherein the cell housing is channel-shaped, and the anode side wall and the cathode side wall are connected to said cell housing like a flange to form a box-like outer shell of the cell.
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) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |