# US 4,392,937 A · Electrolysis cell

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- Number: US 4,392,937 A
- Document ID: US4392937A
- Status: Granted
- Kind: A
- Application number: 06/372,099
- Filed: 1982-04-26
- Granted: 1983-07-12
- Earliest claimed: 1982-04-26
- Assignees: Uhde GmbH
- Inventors: Helmut Schmitt; Wolfgang Strewe; Helmuth Schurig
- Web page: https://patentgrep.com/patent/US4392937A

## CPC

- C25B 9/19: with diaphragms
- C25B 11/02: characterised by shape or form
- C25B 9/70: Assemblies comprising two or more cells
- C25B: ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR (anodic or cathodic protection C23F13/00; single-crystal growth C30B)

## Abstract

An electrolysis cell having an inlet and an outlet for transient electrolytes and including monopolar electrodes arranged in a staggered pattern such that the electrode plates of one polarity extend into the gaps formed between the electrode plates of the opposite polarity.

## Claims

### Claim 1

An electrolysis cell consisting of a housing with one inlet and one outlet for the electrolyte passing through the cell, said housing accommodating monopolar electrodes, each electrode consisting of a number of parallel plates fixed to a common carrier element, the electrodes being arranged in a staggered pattern so that the plates of one polarity extend into the gaps formed by the plates of the opposite polarity and at least one median electrode stack of one polarity with central electric power input is arranged between two electrode stacks of the other polarity, characterized in that the median electrode stack consists of a plurality of electrode plates and a power input plate of a length substantially equal to said plurality of electrode plates and a width substantially equal to that of the cell; said electrode plates being welded along one longitudinal side to said power input plate in a toothed pattern and said power input plate being joined to one side of wall of said cell housing and being provided with at least one power input connection.

### Claim 2 (depends on 1)

An electrolysis cell according to claim 1, characterized in that said power input plate penetrates through the wall of the cell, and the power input plate being provided with at least one external power input connection.

### Claim 3 (depends on 1)

An electrolysis cell according to claim 1, characterized in that said power input plate extends beyond the wall of the cell housing and is provided with several power input connections.

### Claim 4 (depends on 1)

An electrolysis cell according to claim 1, characterized in that said power input plate is a copper plate with a cladding extending at least to all areas inside the cell to protect the surfaces wetted by the electrolyte.

### Claim 5 (depends on 1)

An electrolysis cell according to claim 1, characterized in that said power input plate is seal-welded to the housing at the point of penetration through the housing wall.

### Claim 6 (depends on 1)

An electrolysis cell according to claim 1, characterized in that the inside surface of wall of the cell is activated to obtain an additional electrode surface.