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US4311577A
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Method for assembling membrane electrolytic cells
Assignee: Olin Corp
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Filing: 1980-04-21
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Granted: 1982-01-19
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Expires: 2000-04-21
Abstract
Abstract A method of assembling an electrolytic membrane cell is disclosed. The method includes the steps of assembling a vertical stack of horizontal electrode frames with a horizontal membrane sheet between each pair of frames, then applying pressure to vertically compress the vertical stack, then rotating the compressed vertical stack from a vertical orientation to a horizontal orientation in which orientation of the stack is called a "pack" and then connecting the pack into an electrical circuit and to raw material supply lines and product withdrawal lines and then electrically operating the pack while maintaining the pack in a horizontal orientation.
Inventors
- 👤 Morton S. Kircher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:03
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/70; C25B9/73; C25B9/17; C25B9/19; C25B9/23; C25B9/75; C25B9/77
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
120 words
A method of assembling a monopolar filter press-type electrolytic cell, which method comprises the steps of: (a) assembling a vertical stack of horizontal electrode frames with a horizontal membrane sheet between each pair of opposed frames; (b) preconditioning said vertical stack by passing moist, warm fluid through said stack; (c) applying pressure to opposite vertical ends of said stack so as to vertically compress said vertical stack; (d) rotating said compressed vertical stack from a vertical orientation to a horizontal orientation; (e) connecting said vertically assembled, rotated, horizontal stack into an electrical circuit and to raw material supply lines and product withdrawal lines; and (f) electrolytically operating said vertically assembled horizontal stack while maintaining said stack in said horizontal orientation.
Claim 2
Independent Claim
120 words
A method of assembling a monopolar filter press-type electrolytic cell, which method comprises the steps of: (a) assembling a vertical stack of horizontal electrode frames with a horizontal membrane sheet between each pair of opposed frames; (b) preconditioning said vertical stack by passing moist, warm fluid through said stack; (c) applying pressure to opposite vertical ends of said stack so as to vertically compress said vertical stack; (d) rotating said compressed vertical stack from a vertical orientation to a horizontal orientation; (e) connecting said vertically assembled, rotated, horizontal stack into an electrical circuit and to raw material supply lines and product withdrawal lines; and (f) electrolytically operating said vertically assembled horizontal stack while maintaining said stack in said horizontal orientation.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein frames of opposite polarities are alternated in the stack so as to produce a monopolar cell configuration.
Claim 4
Dependent Claim
11 words
The method of claim 1 wherein the electrode frames are bipolar.
Claim 5
Dependent Claim
47 words
The method of claim 1 wherein said step of assembling the vertical stack comprises the steps of: (a) positioning each frame sequentially into a jig; (b) aligning said positioned frames within said jig; and (c) vertically compressing said stack while said frames are positioned in said jig.
Claim 6
Dependent Claim
75 words
The method of claim 1 further comprising the steps of: (a) placing a first end frame at an assembly point; (b) assembling said vertical stack atop said first end frame; (c) positioning a second end frame atop said assembled vertical stack; (d) forcing said first and second end frames toward each other to compress said assembled stack; (e) supporting said assembled stack upon said end frames following rotation of said stack to a horizontal position.
Claim 7
Dependent Claim
24 words
The method of claim 1 wherein cathode frames are placed in the bottom and top of said vertical stack during said vertical assembly step.
Claim 8
Dependent Claim
41 words
The method of claim 1 wherein: (a) said application of pressure is done hydraulically through use of a hydraulic press; and (b) the vertical stack is maintained in a compressed position by a rigid restraint while said hydraulic pressure is released.
Claim 9
Independent Claim
149 words
A method of assembling a monopolar filter press-type electrolytic cell having a predetermined number of electrode frames and a predetermined number of membrane sheets, the method comprising the steps of: (a) assembling the predetermined plurality of electrode frames in a generally vertical stack at the same work area, the frames being oriented generally horizontally with a generally horizontal membrane sheet interposed between each pair of opposing electrode frames; (b) uniformly applying pressure to opposite vertical ends of said stack so that substantially no horizontal movement of the electrode frames results while said stack is vertically compressed; (c) rotating said compressed vertical stack from a vertical orientation to a horizontal orientation; (d) connecting said vertically assembled, rotated, horizontal stack into an electrical circuit and to raw material supply lines and product withdrawal lines; and (e) electrolytically operating said vertically assembled horizontal stack while maintaining said stack in said horizontal orientation.
Claim 10
Independent Claim
149 words
A method of assembling a monopolar filter press-type electrolytic cell having a predetermined number of electrode frames and a predetermined number of membrane sheets, the method comprising the steps of: (a) assembling the predetermined plurality of electrode frames in a generally vertical stack at the same work area, the frames being oriented generally horizontally with a generally horizontal membrane sheet interposed between each pair of opposing electrode frames; (b) uniformly applying pressure to opposite vertical ends of said stack so that substantially no horizontal movement of the electrode frames results while said stack is vertically compressed; (c) rotating said compressed vertical stack from a vertical orientation to a horizontal orientation; (d) connecting said vertically assembled, rotated, horizontal stack into an electrical circuit and to raw material supply lines and product withdrawal lines; and (e) electrolytically operating said vertically assembled horizontal stack while maintaining said stack in said horizontal orientation.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-18 | 1985-07-20 | 1986-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-18 | 1989-07-20 | 1990-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-18 | 1993-07-20 | 1994-01-19 | $7700.00 | Window Closed / Lapsed |