Apparatus for producing ultra-pure water by ion exchange resin
US4698153A · kind A · utility
42Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1985 |
| Grant date | Oct 6, 1987 |
| Priority date | — |
| Expiry date | Feb 7, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/90
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Projections are removed from the surfaces of ion exchange resin particles by contacting the resin particles with a liquefied gas or supercritical gas in advance. The ion exchange resin thus prepared can remove ions from raw water so thoroughly that the water quality can be improved to that of ultra-pure water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.