Acid recycling system
US5264123A · kind A · utility
16Cited by
1References
1Claims
0Family size
Inventor
Key dates
| Filing date | Aug 18, 1992 |
| Grant date | Nov 23, 1993 |
| Priority date | — |
| Expiry date | Aug 18, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F1/46
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system for removing acid from a metal-rich acid stream by diffusion dialysis. The acid stream is contacted with a water stream through an ion exchange membrane, in a series, counter-current flow contactor. The contactor is formed of a stack of layers of ion exchange membranes and impervious separators with flow-control apertures. The stack includes switch-back spacers which cause the flow to switch direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.