Apparatus for removing impurities from electrolyte solutions
US4105534A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Aug 29, 1977 |
| Grant date | Aug 8, 1978 |
| Priority date | — |
| Expiry date | Aug 29, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D69/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Apparatus for removing ionic impurities from an electro-plating bath and similar electrolyte solutions by electrodialysis of the solution comprises a special electrolytic cell having a generally tubular anode, a generally tubular cathode and a generally tubular permselective membrane that are disposed concentrically with respect to each other, the generally tubular permselective membrane being positioned between the tubular anode and the tubular cathode. Additionally, the cell is provided with longitudinally movable scraper means for removing precipitated particulate matter from the surface of one of the generally tubular electrodes (that is, from the surface of the anode or the cathode) facing the permselective membrane. The generally tubular anode and permselective membrane together define a generally annular anolyte compartment through which an anolyte solution can be circulated, and the generally tubular cathode and permselective membrane together define a generally annular catholyte compartment through which a catholyte solution can be circulated. If the ionic impurities to be removed from the electrolyte solution are anions the permselective membrane is an anion permeable mat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.