Apparatus for purifying a liquid by ion-exchange
US4294699A · kind A · utility
7Cited by
4References
4Claims
0Family size
Inventor
Key dates
| Filing date | Apr 29, 1980 |
| Grant date | Oct 13, 1981 |
| Priority date | — |
| Expiry date | Apr 29, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J47/022
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A bed of particulate ion-exchange material is confined in the cavity of a container bounded by a wall portion of the container which is movable inward of the cavity. Supply and discharge conduits communicate with respective portions of the cavity for supplying the liquid to be purified, and for discharging from the cavity the liquid purified by contact with the particulate material. A biasing device engages the container outside the cavity and biases the movable wall portion inward of the cavity, whereby the particulate material is kept under compressive stress, and channeling due to shrinkage of the bed is avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.