Process and installation for electrolysis by percolation across one or several porous volumic electrodes
US4913779A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 1988 |
| Grant date | Apr 3, 1990 |
| Priority date | — |
| Expiry date | Dec 2, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B15/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to a process and an apparatus for electrolysis by percolation through at least one porous volumic electrode, for carrying out an electrochemical reaction. The process is of the type comprising electrically polarizing each volumic electrode formed by a conductive bed of solid particles (2), and causing a liquid electrolyte to circulate through said volumic electrode. The process according to the invention is characterized in causing a periodic pulsation of the electrolyte, such that the particles of the bed forming the volumic electrode are placed in a state of fluidization during one fraction of the cycle of pulsation and remain in a fixed bed during the remainder of the cycle with reversal of the direction of circulation. The process suppresses the phenomena of clogging while providing an excellent coefficient of transfer, without disturbing the selectivity of the electrochemical reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.