Process and apparatus for controlling impurities and pollution from membrane chlor-alkali cells
US4242185A · kind A · utility
58Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 4, 1979 |
| Grant date | Dec 30, 1980 |
| Priority date | — |
| Expiry date | Sep 4, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/129
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved integrated and cyclic process and apparatus are disclosed wherein portions of various process and waste fluids are recycled to control impurities in the influents to membrane chlor-alkali cells and simultaneously to minimize liquid pollutants from the process. The improved process and apparatus reduces energy costs and wastes while simultaneously controlling impurities important to operation of membrane chlor-alkali electrolytic cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.